question_slug stringlengths 3 77 | title stringlengths 1 183 | slug stringlengths 12 45 | summary stringlengths 1 160 ⌀ | author stringlengths 2 30 | certification stringclasses 2
values | created_at stringdate 2013-10-25 17:32:12 2025-04-12 09:38:24 | updated_at stringdate 2013-10-25 17:32:12 2025-04-12 09:38:24 | hit_count int64 0 10.6M | has_video bool 2
classes | content stringlengths 4 576k | upvotes int64 0 11.5k | downvotes int64 0 358 | tags stringlengths 2 193 | comments int64 0 2.56k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
product-sales-analysis-iii | MySQL Solution | mysql-solution-by-small_friend-85k8 | SELECT product_id, year AS first_year, quantity, price\nFROM Sales\nWHERE (product_id, year) IN (\nSELECT product_id, MIN(year) as year\nFROM Sales\nGROUP BY pr | Small_friend | NORMAL | 2019-06-06T02:13:56.572755+00:00 | 2019-06-06T02:13:56.572805+00:00 | 19,812 | false | SELECT product_id, year AS first_year, quantity, price\nFROM Sales\nWHERE (product_id, year) IN (\nSELECT product_id, MIN(year) as year\nFROM Sales\nGROUP BY product_id) ; | 65 | 1 | [] | 19 |
product-sales-analysis-iii | MySQL solution MIN(year) group by product_id | mysql-solution-minyear-group-by-product_-jngq | Intuition\n Describe your first thoughts on how to solve this problem. \nselect year of first sold of each prodcut in Sales table\nuse then to filter Sales tabl | andy3278 | NORMAL | 2023-08-16T03:02:53.021460+00:00 | 2023-08-16T03:02:53.021481+00:00 | 20,668 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\nselect year of first sold of each prodcut in Sales table\nuse then to filter Sales table\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. ... | 58 | 0 | ['MySQL'] | 12 |
product-sales-analysis-iii | Clearing aggregation concept (sol. using subquery) | clearing-aggregation-concept-sol-using-s-0dil | Clearing conceptsYou might be thinking just partition/group by product_id and find the min() out of it.So, accordingly below code should work right?But surprisi | aadarshkumar131 | NORMAL | 2025-01-12T12:58:25.684455+00:00 | 2025-01-14T09:40:57.920401+00:00 | 6,494 | false | ## Clearing concepts
You might be thinking just partition/group by `product_id` and find the `min()` out of it.
So, accordingly below code should work right?
```sql
select product_id, min(year) as first_year, quantity, price
from sales
group by product_id
```
**But surprisingly its wrong.**
##### Reason-
> SQL rules... | 31 | 0 | ['MySQL'] | 6 |
product-sales-analysis-iii | Super Each Approach | super-each-approach-by-lovepreet12a-rgi5 | Intuition\n\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Tim | Lovepreet12a | NORMAL | 2023-08-25T19:03:31.401056+00:00 | 2023-08-25T19:03:31.401082+00:00 | 4,306 | false | # Intuition\n\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your ... | 23 | 0 | ['MS SQL Server'] | 6 |
product-sales-analysis-iii | Help! Why is my solution wrong? Did I misunderstand the problem? | help-why-is-my-solution-wrong-did-i-misu-1wct | From my understanding, this question is the same as this game analysis 1\nso I wrote similar code as below\n\n# select product_id, min(year), quantity, price f | swallow_liu | NORMAL | 2019-08-30T23:46:05.705590+00:00 | 2019-08-30T23:46:05.705624+00:00 | 4,062 | false | From my understanding, this question is the same as this [game analysis 1](https://leetcode.com/problems/game-play-analysis-i/)\nso I wrote similar code as below\n```\n# select product_id, min(year), quantity, price from Sales \n# group by product_id\n```\n\nwhich does not pass, I saw people wrote below that passed \... | 19 | 0 | [] | 6 |
product-sales-analysis-iii | ✅EASY AND SIMPLE SOLUTION✅ | easy-and-simple-solution-by-deleted_user-t7fi | \n# Code\n\n# Write your MySQL query statement below\nselect \n product_id, \n year as first_year, \n quantity, \n price\nfrom \n Sales\nwhere\n | deleted_user | NORMAL | 2024-05-26T15:32:23.449278+00:00 | 2024-05-26T15:32:23.449297+00:00 | 9,112 | false | \n# Code\n```\n# Write your MySQL query statement below\nselect \n product_id, \n year as first_year, \n quantity, \n price\nfrom \n Sales\nwhere\n (product_id, year) in (\n select \n product_id, \n min(year) \n ... | 18 | 0 | ['MySQL'] | 6 |
product-sales-analysis-iii | Window function solution | window-function-solution-by-connieee-abwk | \nselect product_id, year as first_year, quantity, price\nfrom(\nselect *,\nrank() over(partition by product_id order by year) as year_rnk\nfrom sales) as tbl\n | connieee | NORMAL | 2019-08-09T19:05:23.253750+00:00 | 2019-08-09T19:05:23.253791+00:00 | 4,444 | false | ```\nselect product_id, year as first_year, quantity, price\nfrom(\nselect *,\nrank() over(partition by product_id order by year) as year_rnk\nfrom sales) as tbl\nwhere year_rnk = 1\n\n``` | 18 | 1 | [] | 6 |
product-sales-analysis-iii | MySQL solution for beginners ✅✅ with explanation for why min(year) alone doesn't work | mysql-solution-for-beginners-with-explan-6iaz | \n\n# Approach\nSELECT product_id, MIN(year) as first_year, quantity, price FROM Sales GROUP BY product_id) \nThis will not work as when you ask for the MIN yea | Samar3007 | NORMAL | 2023-08-22T16:56:38.541355+00:00 | 2023-08-22T16:56:38.541380+00:00 | 2,631 | false | \n\n# Approach\nSELECT product_id, MIN(year) as first_year, quantity, price FROM Sales GROUP BY product_id) \nThis will not work as when you ask for the MIN year it will inspect each year from the pool and return it, but it will not select the entire row after returning the year.\n\nLet\'s say we have this input:\n\n| ... | 16 | 0 | ['MySQL'] | 2 |
product-sales-analysis-iii | MySQL simple solution, beats 90%, w/o window functions | mysql-simple-solution-beats-90-wo-window-vi7p | \nselect\n product_id,\n year as first_year,\n quantity,\n price\nfrom Sales\nwhere (product_id, year) in (select product_id, min(year) from Sales g | zhihui329 | NORMAL | 2020-12-24T08:16:25.239498+00:00 | 2020-12-24T08:16:25.239537+00:00 | 4,119 | false | ```\nselect\n product_id,\n year as first_year,\n quantity,\n price\nfrom Sales\nwhere (product_id, year) in (select product_id, min(year) from Sales group by 1)\n``` | 16 | 0 | ['MySQL'] | 3 |
product-sales-analysis-iii | pandas || 2 lines, rank, merge || T/S: 92% / 99% | pandas-2-lines-rank-merge-ts-92-99-by-sp-f28l | \nimport pandas as pd\n\ndef sales_analysis(sales: pd.DataFrame, product: pd.DataFrame) -> pd.DataFrame:\n\n sales[\'rnk\'] = sales.groupby([\'product_id\']) | Spaulding_ | NORMAL | 2024-05-15T21:01:30.358458+00:00 | 2024-05-31T22:33:29.097319+00:00 | 3,137 | false | ```\nimport pandas as pd\n\ndef sales_analysis(sales: pd.DataFrame, product: pd.DataFrame) -> pd.DataFrame:\n\n sales[\'rnk\'] = sales.groupby([\'product_id\'])[\'year\'\n ].rank(method=\'dense\')\n \n return sales.loc[sales.rnk == 1\n ].merge(product).ilo... | 14 | 0 | ['Pandas'] | 1 |
product-sales-analysis-iii | MySQL Solution for Product Sales Analysis III Problem | mysql-solution-for-product-sales-analysi-gmdg | Intuition\n Describe your first thoughts on how to solve this problem. \nThe intuition behind the given solution is to retrieve the first year of sale for each | Aman_Raj_Sinha | NORMAL | 2023-05-18T03:36:14.667165+00:00 | 2023-05-18T03:36:14.667214+00:00 | 8,248 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\nThe intuition behind the given solution is to retrieve the first year of sale for each product along with the corresponding quantity and price information from the Sales table. The approach involves using a subquery to identify the minimu... | 14 | 0 | ['MySQL'] | 2 |
product-sales-analysis-iii | 2 PostgreSQL solutions | 2-postgresql-solutions-by-alexlinus-7ea2 | Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Code\n\npostgresql []\nSELECT \n Sales.product_id as product_id,\n Sales.year | alexlinus | NORMAL | 2024-11-02T02:01:48.187760+00:00 | 2024-11-02T02:01:48.187780+00:00 | 1,111 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Code\n\n```postgresql []\nSELECT \n Sales.product_id as product_id,\n Sales.year as first_year,\n Sales.quantity as quantity,\n Sales.price as price\nFROM Sales\nJOIN (\n SELECT product_id, MIN(year) AS first_year\n ... | 12 | 0 | ['PostgreSQL'] | 0 |
product-sales-analysis-iii | Is the expected solution correct? | is-the-expected-solution-correct-by-hsta-1rzr | Shortened the second test case for displayability. Below is the table screenshot. \nExpected output of OJ is actually the minimum year of a product_id, with qua | hstangnatsh | NORMAL | 2019-06-02T14:03:07.312930+00:00 | 2019-06-02T14:09:21.273717+00:00 | 3,212 | false | Shortened the second test case for displayability. Below is the table screenshot. \nExpected output of OJ is actually the **minimum** year of a product_id, with quantity and price of the **first** row. That\'s obviously an outcome from query similar with \n```\nselect product_id, min(year), quantity, price \nfrom Sales... | 10 | 0 | [] | 10 |
product-sales-analysis-iii | Easy and Simple Solution | Beginner-friendly🚀 | easy-and-simple-solution-beginner-friend-igrf | CodeIf you found this solution helpful, please give it an upvote! 🌟✨ It really motivates me to share more solutions like this. 😊👍
Happy coding! 💻🐱🏍
IntuitionWe | Yadav_Akash_ | NORMAL | 2025-02-09T13:00:01.835537+00:00 | 2025-02-09T13:00:01.835537+00:00 | 2,522 | false | # Code
```mysql []
# Write your MySQL query statement below
select product_id,year as first_year, quantity, price
from Sales
where (product_id,year) in (select product_id, min(year) from Sales group by product_id)
```
**If you found this solution helpful, please give it an upvote! 🌟✨ It really motivates me to share mo... | 9 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | Only JOIN and WITH (Common Table Expressions) | only-join-and-with-common-table-expressi-mxyw | \n\nWITH min_year_table AS (\nSELECT product_id, min(year) min_year\nFROM sales\nGROUP BY product_id)\n\nSELECT s.product_id, s.year first_year, quantity, price | SergeyZhirkov | NORMAL | 2023-08-20T22:16:46.775462+00:00 | 2024-09-22T18:59:52.259361+00:00 | 806 | false | \n```\nWITH min_year_table AS (\nSELECT product_id, min(year) min_year\nFROM sales\nGROUP BY product_id)\n\nSELECT s.product_id, s.year first_year, quantity, price\nFROM sales s\nJOIN min_year_table m ON s.product_id = m.product_id and s.year = m.min_year\n```\n\n\n | 9 | 0 | ['MySQL'] | 5 |
product-sales-analysis-iii | Without using any fancy Keyword || Simple JOINs used ✅✅ | without-using-any-fancy-keyword-simple-j-2zdu | Code\n\nselect s.product_id, s.year as first_year, s.quantity, s.price\nfrom Sales s\njoin (select product_id, min(year) as year from sales group by product_id) | Lil_ToeTurtle | NORMAL | 2023-06-14T07:53:57.432026+00:00 | 2023-06-14T07:53:57.432045+00:00 | 3,727 | false | # Code\n```\nselect s.product_id, s.year as first_year, s.quantity, s.price\nfrom Sales s\njoin (select product_id, min(year) as year from sales group by product_id) ss\non s.product_id = ss.product_id and s.year = ss.year\n``` | 9 | 0 | ['Oracle'] | 1 |
product-sales-analysis-iii | Easy way using IN operator | MySQL | easy-way-using-in-operator-mysql-by-lutf-94di | Intuition\n Describe your first thoughts on how to solve this problem. \nOur task is to find the product_id, year, quantity, and price for the first year of eve | lutfiddindev | NORMAL | 2023-11-06T06:55:41.544016+00:00 | 2023-11-06T06:55:41.544063+00:00 | 2,801 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\nOur task is to find the `product_id`, `year`, `quantity`, and `price` for the first year of every product sold.\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n> `IN` \u2192 This operator allows to specify multiple... | 8 | 0 | ['MySQL'] | 1 |
product-sales-analysis-iii | ✅ Simple solution using only CTE ✅ | simple-solution-using-only-cte-by-daniel-crn5 | \n\n# Approach\n Describe your approach to solving the problem. \nFirst prepared the temp table that has the MIN year for the particular product_id (GROUP BY).\ | Daniel_Charles_J | NORMAL | 2024-09-24T06:01:34.658265+00:00 | 2024-09-24T06:01:34.658294+00:00 | 1,487 | false | \n\n# Approach\n<!-- Describe your approach to solving the problem. -->\nFirst prepared the temp table that has the MIN year for the particular product_id (GROUP BY).\n\nThen by using this record, fetched the desired rows from Sales table.\n\nNOTE : No need for JOIN here, because we don\'t need to show the product_name... | 7 | 0 | ['PostgreSQL'] | 0 |
product-sales-analysis-iii | ✅Easiest Basic Sql Solution |4 Approaches| Beginner Level to Advance🏆 | easiest-basic-sql-solution-4-approaches-u5a2f | null | dev_yash_ | NORMAL | 2024-03-15T13:25:50.533124+00:00 | 2025-04-06T06:28:20.217477+00:00 | 4,367 | false | ```sql
#Approach 1 :Subquery and Join
SELECT
Sales.product_id,
SubSales.first_year,
Sales.quantity,
Sales.price
FROM
Sales
JOIN
(
SELECT
product_id,
MIN(year) AS first_year
FROM
Sales
GROUP BY
product_id
) AS SubSales ... | 7 | 0 | ['MySQL', 'MS SQL Server'] | 2 |
product-sales-analysis-iii | ✔✔✔simple solution with simple explanation - PANDAS | simple-solution-with-simple-explanation-5q51d | Code\n\nimport pandas as pd\n\ndef sales_analysis(sales: pd.DataFrame, product: pd.DataFrame) -> pd.DataFrame:\n # Merge sales and product tables\n merged | anish_sule | NORMAL | 2024-02-02T09:52:31.967200+00:00 | 2024-02-02T09:52:31.967230+00:00 | 559 | false | # Code\n```\nimport pandas as pd\n\ndef sales_analysis(sales: pd.DataFrame, product: pd.DataFrame) -> pd.DataFrame:\n # Merge sales and product tables\n merged_df = sales.merge(product, how=\'left\', on=\'product_id\')\n \n # Find the first year of sale for each product\n first_year_df = merged_df.groupb... | 7 | 0 | ['Database', 'Pandas'] | 1 |
product-sales-analysis-iii | Medium🔥 | Easy Approach 2023🤝|| Explained 📝|| SQL50/25✅ | medium-easy-approach-2023-explained-sql5-i0u5 | Hello LeetCode fans,\nBelow I presented a solution to the problem (1070. Product Sales Analysis III).\nIf you found it useful or informative,\nClick the "UPVOTE | komronabdulloev | NORMAL | 2023-10-26T21:34:03.480814+00:00 | 2023-10-26T21:34:03.480875+00:00 | 1,467 | false | # Hello LeetCode fans,\nBelow I presented a solution to the problem (1070. Product Sales Analysis III).\nIf you found it `useful` or `informative`,\nClick the "`UPVOTE`" button below and it means I was able to `help someone.`\nYour UPVOTES encourage me and others who are `working hard` to improve their problem solving ... | 7 | 0 | ['MySQL'] | 1 |
product-sales-analysis-iii | Easy Soution with Step by Step Explanation | easy-soution-with-step-by-step-explanati-rqly | Intuition\nImagine you have a list of all the sales made by a store, and each sale has information about the product sold, the date of the sale, how many of the | deepankyadav | NORMAL | 2023-07-28T07:11:43.586342+00:00 | 2023-07-28T07:11:43.586371+00:00 | 3,065 | false | # Intuition\nImagine you have a list of all the sales made by a store, and each sale has information about the product sold, the date of the sale, how many of the product were sold, and the price of each unit. Now, we want to figure out which products were sold more than once on the same day and how much money was made... | 7 | 0 | ['Database', 'MySQL'] | 4 |
product-sales-analysis-iii | 🔥🔥🔥 3 solutions in MySQL | Beats 66.61%🔥🔥🔥 | 3-solutions-in-mysql-beats-6661-by-prito-t09p | 1. GROUP BY & Sub-query with 1080ms Runtime (Beats 66.61%)\n- Time complexity: O(n log n) + O(NM) (with indexing optimizations)\n- Space complexity: O(m)\n\n# C | pritom5928 | NORMAL | 2024-11-06T05:00:11.106047+00:00 | 2024-11-06T05:00:11.106071+00:00 | 1,798 | false | # 1. GROUP BY & Sub-query with 1080ms Runtime (Beats 66.61%)\n- **Time complexity:** O(n log n) + O(N*M) (with indexing optimizations)\n- **Space complexity:** O(m)\n\n# Code\n```mysql []\nSELECT \n product_id,\n year AS first_year,\n quantity ,\n price\nFROM sales \nWHERE (product_id, year) IN (\n S... | 5 | 0 | ['MySQL'] | 2 |
product-sales-analysis-iii | easiest solution in MySql | easiest-solution-in-mysql-by-mantosh_kum-sruj | Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time | mantosh_kumar04 | NORMAL | 2024-08-25T09:03:26.710575+00:00 | 2024-08-25T09:03:26.710603+00:00 | 3,064 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ --... | 5 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | Simple MySQL solution | simple-mysql-solution-by-_preeti-a9aq | \n# Code\n\nselect distinct product_id, year as first_year, quantity, price \nfrom Sales \nwhere ((product_id, year) in (select product_id, min(year) from sales | _preeti | NORMAL | 2024-03-10T13:38:05.912562+00:00 | 2024-03-10T13:38:05.912595+00:00 | 1,384 | false | \n# Code\n```\nselect distinct product_id, year as first_year, quantity, price \nfrom Sales \nwhere ((product_id, year) in (select product_id, min(year) from sales group by product_id))\n``` | 5 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | Step by step solution development | Easy to understand | step-by-step-solution-development-easy-t-vv85 | Steps: \n1. Find the First Year of Sale for Each Product\n2. Product Details for the First Year of Every Product Sold\n3. Summary\n\n# Code\n\nSELECT product_id | Pacman45 | NORMAL | 2023-12-28T15:36:43.573073+00:00 | 2023-12-28T15:36:43.573099+00:00 | 1,500 | false | # Steps: \n1. Find the First Year of Sale for Each Product\n2. Product Details for the First Year of Every Product Sold\n3. Summary\n\n# Code\n```\nSELECT product_id, year AS first_year, quantity, price\nFROM sales\nWHERE (product_id, year) IN (\n SELECT product_id, MIN(year)\n FROM sales\n GROUP BY product_id... | 5 | 0 | ['MySQL'] | 1 |
product-sales-analysis-iii | Pandas oneliner, groupby with transform, no merge needed | pandas-oneliner-groupby-with-transform-n-zved | Intuition\nWe simply have to find minimum year for each product, which you could do with transform - it is equivallent of window functions in SQL or pyspark.\n\ | piocarz | NORMAL | 2023-08-19T06:26:10.623177+00:00 | 2023-08-19T07:39:28.062306+00:00 | 650 | false | # Intuition\nWe simply have to find minimum year for each product, which you could do with transform - it is equivallent of window functions in SQL or pyspark.\n\n# Approach\n1. Create new column with minium year for each product:\n`sales.assign(first_year = sales.groupby(\'product_id\').year.transform(min))`\n2. Selec... | 5 | 0 | ['Pandas'] | 2 |
product-sales-analysis-iii | MYSQL : Two Solution - Window Function/ Subquery. Good Luck 👍✨ | mysql-two-solution-window-function-subqu-43oi | \n# Write your MySQL query statement below\n/**\nTwo Tables: Sales/Product\n\n(sale_id, year) is the primary key of Sales table.\nproduct_id is a foreign key to | ashlyjoseph | NORMAL | 2022-08-29T16:31:26.936459+00:00 | 2022-08-29T16:31:26.936489+00:00 | 3,448 | false | ```\n# Write your MySQL query statement below\n/**\nTwo Tables: Sales/Product\n\n(sale_id, year) is the primary key of Sales table.\nproduct_id is a foreign key to Product table.\nSales table shows a sale on the product product_id in a certain year.\nNote that the price is per unit.\n\nproduct_id is the primary key of ... | 5 | 0 | ['MySQL'] | 3 |
product-sales-analysis-iii | mysql intuitive and easy solution | mysql-intuitive-and-easy-solution-by-jad-zxtt | \nselect product_id, year as first_year, quantity, price from sales\nwhere (product_id, year) in\n\n(\nselect product_id, min(year) from sales\ngroup by product | jadecheng258 | NORMAL | 2019-11-27T20:25:24.567493+00:00 | 2019-11-27T20:25:24.567527+00:00 | 907 | false | ```\nselect product_id, year as first_year, quantity, price from sales\nwhere (product_id, year) in\n\n(\nselect product_id, min(year) from sales\ngroup by product_id\n )\n``` | 5 | 0 | [] | 0 |
product-sales-analysis-iii | simple solution, not using join | simple-solution-not-using-join-by-phong-i2sur | Code | phong-sudo252 | NORMAL | 2025-01-07T13:37:49.801167+00:00 | 2025-01-07T13:37:49.801167+00:00 | 1,107 | false |
# Code
```mysql []
select product_id, year as first_year, quantity, price
from Sales
where (product_id, year) in (
select product_id, min(year)
from Sales
group by product_id
)
``` | 4 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | MySQL | GROUP BY | mysql-group-by-by-sudhikshaghanathe-uk4v | \n\n# Code\nmysql []\n# Write your MySQL query statement below\nSELECT PRODUCT_ID, YEAR AS FIRST_YEAR, QUANTITY, PRICE FROM SALES\nWHERE (PRODUCT_ID, YEAR) IN \ | SudhikshaGhanathe | NORMAL | 2024-09-21T10:50:41.745270+00:00 | 2024-09-21T10:50:41.745304+00:00 | 2,991 | false | \n\n# Code\n```mysql []\n# Write your MySQL query statement below\nSELECT PRODUCT_ID, YEAR AS FIRST_YEAR, QUANTITY, PRICE FROM SALES\nWHERE (PRODUCT_ID, YEAR) IN \n(SELECT PRODUCT_ID, MIN(YEAR) AS YEAR FROM SALES \nGROUP BY PRODUCT_ID); \n``` | 4 | 0 | ['MySQL'] | 1 |
product-sales-analysis-iii | MS SQL Solution, Beats 93.15% | ms-sql-solution-beats-9315-by-kristina_m-2kzx | Code\n\n/* Write your T-SQL query statement below */\nselect s1.product_id, s2.first_year, quantity, price \nfrom Sales s1 join (\n select product_id, min(ye | Kristina_m | NORMAL | 2024-07-24T11:31:17.400908+00:00 | 2024-07-24T11:31:17.400928+00:00 | 1,320 | false | # Code\n```\n/* Write your T-SQL query statement below */\nselect s1.product_id, s2.first_year, quantity, price \nfrom Sales s1 join (\n select product_id, min(year) as first_year from Sales \n group by product_id\n ) s2\non s1.product_id = s2.product_id and s1.year = s2.first_year \n\n```\n\n![2024-07-23 17.3... | 4 | 0 | ['MS SQL Server'] | 2 |
product-sales-analysis-iii | MySql | mysql-by-shyambabujayswal-q26c | \nSELECT\n product_id, \n year first_year,\n quantity,\n price\nFROM\n Sales\nWHERE\n (product_id, year) \n IN\n (\n SELECT\n | ShyamBabuJayswal | NORMAL | 2024-03-04T03:09:07.942792+00:00 | 2024-03-04T03:09:07.942835+00:00 | 1,507 | false | \nSELECT\n product_id, \n year first_year,\n quantity,\n price\nFROM\n Sales\nWHERE\n (product_id, year) \n IN\n (\n SELECT\n product_id,\n MIN(year) first_year\n FROM\n Sales\n GROUP BY\n product_id\n )\n | 4 | 0 | ['MySQL'] | 4 |
product-sales-analysis-iii | ✅ Oracle. MySQL Solution with CTE - Common Table Expression Approach | oracle-mysql-solution-with-cte-common-ta-z23j | Intuition\n Describe your first thoughts on how to solve this problem. \nIn this query, a common table expression (CTE) first_year_sales is used to find the fir | nkorgik | NORMAL | 2023-06-08T02:55:12.256690+00:00 | 2023-06-08T02:55:12.256740+00:00 | 2,842 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\nIn this query, a common table expression (CTE) first_year_sales is used to find the first year of sales for each product. Then we join this CTE with the Sales table to get the corresponding quantity and price information for the first yea... | 4 | 0 | ['MySQL'] | 2 |
product-sales-analysis-iii | Easy Solution | easy-solution-by-ayu_0308958-f5jn | Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time | Ayu_0308958 | NORMAL | 2023-06-02T12:21:42.434841+00:00 | 2023-06-02T12:21:42.434888+00:00 | 3,771 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ --... | 4 | 0 | ['MySQL', 'Ruby', 'Oracle', 'MS SQL Server'] | 5 |
product-sales-analysis-iii | MySQL Solution | mysql-solution-by-thehawk-0j0j | Apparently, the store can have different prices and quantities for the same product in a given year. \nThe problem does not explicitly mention this.\n\nWITH cte | thehawk | NORMAL | 2021-09-12T01:43:41.219560+00:00 | 2021-09-12T01:43:41.219592+00:00 | 370 | false | Apparently, the store can have different prices and quantities for the same product in a given year. \nThe problem does not explicitly mention this.\n```\nWITH cte AS (\n\nSELECT\n product_id,\n MIN(year) as first_year\nFROM\n sales\nGROUP BY\n product_id\nORDER BY\n product_id\n)\n\nSELECT\n t1.produ... | 4 | 0 | [] | 0 |
product-sales-analysis-iii | NO JOINS -> filter with DENSE_RANK() | no-joins-filter-with-dense_rank-by-artam-mt7l | Intuitionthe clue was "for the first year of every product sold."Approachrank them by YEAR (ORDER BY year) and split them on product_id (PARTITION BY product_id | artameviaaa | NORMAL | 2025-03-01T04:27:45.979132+00:00 | 2025-03-01T04:27:45.979132+00:00 | 597 | false | # Intuition
<!-- Describe your first thoughts on how to solve this problem. -->
the clue was ***"for the first year of every product sold."***
# Approach
<!-- Describe your approach to solving the problem. -->
rank them by YEAR (ORDER BY year) and split them on product_id (PARTITION BY product_id)
# Code
```mysql []
... | 3 | 0 | ['Database', 'MySQL'] | 1 |
product-sales-analysis-iii | 1070. Solution of Product Sales Analysis III | 1070-solution-of-product-sales-analysis-1vx7k | \n\n# Approach\nDivide given problem into sub problems in first step have to print \n\' product id, year, quantity, and price for the first year\' so writed in | tanish2610 | NORMAL | 2024-10-04T04:24:22.610718+00:00 | 2024-10-04T04:24:22.610760+00:00 | 956 | false | \n\n# Approach\nDivide given problem into sub problems in *first step* have to print \n\' product id, year, quantity, and price for the first year\' so writed in select block then *STEP 2* user only want to get data from first year (min year) so write query for first year. then remember we have to filter data group wis... | 3 | 0 | ['Database', 'MySQL'] | 0 |
product-sales-analysis-iii | MySQL | Easy solution | mysql-easy-solution-by-siyadhri-0prk | \n\n# Code\nmysql []\n# Write your MySQL query statement below\nselect product_id,year as first_year, quantity, price\nfrom Sales\nwhere(product_id, year) in (s | siyadhri | NORMAL | 2024-08-20T05:03:50.881551+00:00 | 2024-08-20T05:03:50.881582+00:00 | 1,066 | false | \n\n# Code\n```mysql []\n# Write your MySQL query statement below\nselect product_id,year as first_year, quantity, price\nfrom Sales\nwhere(product_id, year) in (select product_id, min(year) from Sales group by product_id)\n``` | 3 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | cte sql | cte-sql-by-rishurajj-wsaw | Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \nthink of cte and then t | rishurajj | NORMAL | 2024-07-11T04:51:50.305298+00:00 | 2024-07-11T04:51:50.305321+00:00 | 827 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\nthink of cte and then try to get the link between main table through join\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\no(n... | 3 | 0 | ['Database', 'C++', 'MySQL', 'Pandas'] | 1 |
product-sales-analysis-iii | 🌟 explained PostgreSQL solution 🚀 Beats 85% and use only one INNER JOIN and one DISTINCT | explained-postgresql-solution-beats-85-a-vn6x | Explaination\n\n- Common Table Expression (CTE) - product_id_with_first_year:\n SELECT DISTINCT ON(product_id) product_id, year FROM Sales ORDER BY produ | mathieusoysal | NORMAL | 2024-04-17T07:46:30.528358+00:00 | 2024-04-17T07:48:21.029876+00:00 | 441 | false | # Explaination\n\n- **Common Table Expression (CTE) - product_id_with_first_year**:\n `SELECT DISTINCT ON(product_id) product_id, year FROM Sales ORDER BY product_id, year ASC`: This CTE is used to select the earliest sales record for each product_id based on the year. The DISTINCT ON clause ensures that for eac... | 3 | 0 | ['PostgreSQL'] | 1 |
product-sales-analysis-iii | ✔✔✔easy solution - SUBQUERY, WHERE, MIN⚡⚡⚡MySQL | MS SQL Server | PostgreSQL | easy-solution-subquery-where-minmysql-ms-qnng | Code\n\nSELECT s.product_id, s.year AS first_year, s.quantity, s.price\nFROM Sales AS s\nWHERE s.year IN (\n SELECT MIN(year)\n FROM Sales AS s1\n WHER | anish_sule | NORMAL | 2024-01-25T06:36:07.234759+00:00 | 2024-05-02T08:08:38.892735+00:00 | 421 | false | # Code\n```\nSELECT s.product_id, s.year AS first_year, s.quantity, s.price\nFROM Sales AS s\nWHERE s.year IN (\n SELECT MIN(year)\n FROM Sales AS s1\n WHERE s.product_id = s1.product_id\n)\n``` | 3 | 0 | ['Database', 'MySQL', 'MS SQL Server', 'PostgreSQL'] | 2 |
product-sales-analysis-iii | Simple Solution Using Rank Function | simple-solution-using-rank-function-by-v-ljdf | Intuition\n Describe your first thoughts on how to solve this problem. \nThe problem looks a bit on the moderate side if we do not use the rank function but as | 20250316.vinitsingh27 | NORMAL | 2023-12-30T06:55:16.748622+00:00 | 2023-12-30T06:55:16.748642+00:00 | 407 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\nThe problem looks a bit on the moderate side if we do not use the rank function but as soon as we rank the product id according to the year it will be easy to solve .\n\n---\n\n\n# Approach\n<!-- Describe your approach to solving the prob... | 3 | 0 | ['Database', 'MySQL'] | 2 |
product-sales-analysis-iii | SQL: Identifying Initial Sales Data for Products | sql-identifying-initial-sales-data-for-p-268t | Code\n\nSELECT product_id, year AS first_year, quantity, price\nFROM sales\nWHERE (product_id, year) IN \n (SELECT product_id, MIN(year) FROM sales GROUP | aleos-dev | NORMAL | 2023-12-17T13:16:47.904856+00:00 | 2023-12-18T16:14:02.821557+00:00 | 1,414 | false | # Code\n```\nSELECT product_id, year AS first_year, quantity, price\nFROM sales\nWHERE (product_id, year) IN \n (SELECT product_id, MIN(year) FROM sales GROUP BY product_id)\n```\n# Complexity\n- Time complexity: $$O(n * logn)$$\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\nThe time complexity is influ... | 3 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | 💻Think like SQL Engine🔥Mastering MS SQL (SubQuery✅) | think-like-sql-enginemastering-ms-sql-su-lhw6 | Intuition\nThis SQL query is selecting the product ID, first year, quantity, and price for all products in the Sales table. It is doing this by joining the Sale | k_a_m_o_l | NORMAL | 2023-11-22T09:28:41.780390+00:00 | 2023-11-22T09:28:41.780412+00:00 | 1,766 | false | # Intuition\nThis SQL query is selecting the product ID, first year, quantity, and price for all products in the Sales table. It is doing this by joining the Sales table with itself, using the min(year) subquery to identify the first year for each product ID. The inner join clause ensures that only records that match b... | 3 | 0 | ['MySQL'] | 2 |
product-sales-analysis-iii | Identifying Earliest Product Sales | MySQL Solution | identifying-earliest-product-sales-mysql-26ht | Intuition\n Describe your first thoughts on how to solve this problem. \nWe need to find the product id, year, quantity, and price for the first year of every p | samabdullaev | NORMAL | 2023-10-21T23:37:19.831865+00:00 | 2023-10-21T23:37:19.831884+00:00 | 700 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\nWe need to find the product id, year, quantity, and price for the first year of every product sold.\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n1. Find the earliest year each product was sold by grouping sales ... | 3 | 0 | ['MySQL'] | 1 |
product-sales-analysis-iii | Using Window Function: Why row_number() doesn't work | using-window-function-why-row_number-doe-sc5n | Intuition\nFrom the problem description, since we need the first of each product, it shoud be easy to solve using the window functions. Hence, we need to rank t | aishwaryatw | NORMAL | 2023-08-22T05:41:17.072909+00:00 | 2023-08-22T05:41:17.072926+00:00 | 105 | false | # Intuition\nFrom the problem description, since we need the first of each product, it shoud be easy to solve using the window functions. Hence, we need to rank the years for each product, and then select the row with lowest value in year.\n\n# Approach\nI started by using the row_number() function to rank years for ea... | 3 | 0 | ['MySQL'] | 2 |
product-sales-analysis-iii | Easy MySQL solution with explanation(Best for beginners) | easy-mysql-solution-with-explanationbest-ogtl | Intuition\n Describe your first thoughts on how to solve this problem. \n- The question asks to retrieve the required columns for the first year of sale only.\n | prathams29 | NORMAL | 2023-06-06T12:16:51.347750+00:00 | 2023-06-06T12:16:51.347781+00:00 | 969 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n- The question asks to retrieve the required columns for the first year of sale only.\n- For that, we write a sub-query which selects product_id and the first year of the product sale.\n# Approach\n<!-- Describe your approach to solving t... | 3 | 0 | ['MySQL'] | 1 |
product-sales-analysis-iii | SQL ✅ || WHERE || Subquery || MIN || Easy Solution | sql-where-subquery-min-easy-solution-by-9kh4a | \n\n\n# Code\n\n# Write your MySQL query statement below\nselect \nproduct_id, year as first_year, quantity, price\nfrom Sales\nwhere(product_id, year) in (sele | jasurbekaktamov081 | NORMAL | 2023-05-24T16:39:37.193601+00:00 | 2023-05-24T16:39:37.193638+00:00 | 246 | false | \n\n\n# Code\n```\n# Write your MySQL query statement below\nselect \nproduct_id, year as first_year, quantity, price\nfrom Sales\nwhere(product_id, year) i... | 3 | 1 | ['Database', 'MySQL'] | 1 |
product-sales-analysis-iii | why run the code "accepted",but the answer is wrong? | why-run-the-code-acceptedbut-the-answer-6r8k1 | select distinct product_id, min(year)as first_year, quantity, price\nfrom Sales\ngroup by product_id;\n\nplease help! | YYYJH | NORMAL | 2022-08-18T18:10:25.689900+00:00 | 2022-08-18T18:10:25.689951+00:00 | 1,543 | false | select distinct product_id, min(year)as first_year, quantity, price\nfrom Sales\ngroup by product_id;\n\nplease help! | 3 | 0 | [] | 3 |
product-sales-analysis-iii | Simple solution using window function and rank | simple-solution-using-window-function-an-oh7a | \nselect product_id,year as first_year,quantity,price\nfrom (\nselect product_id, year, quantity, price, rank() over (partition by product_id order by year asc) | findritesh | NORMAL | 2022-01-29T17:19:56.633198+00:00 | 2022-01-29T17:19:56.633245+00:00 | 527 | false | ```\nselect product_id,year as first_year,quantity,price\nfrom (\nselect product_id, year, quantity, price, rank() over (partition by product_id order by year asc) as rnk\nfrom Sales)a\nwhere a.rnk=1\n``` | 3 | 0 | [] | 1 |
product-sales-analysis-iii | MySQL beat 99.58% | mysql-beat-9958-by-liangpaloma-42dt | select product_id, year as first_year, quantity, price\nfrom sales \nwhere (product_id, year) in (select product_id, min(year) from sales group by product_id) | liangpaloma | NORMAL | 2020-02-14T22:09:13.800829+00:00 | 2020-02-14T22:09:13.800866+00:00 | 716 | false | select product_id, year as first_year, quantity, price\nfrom sales \nwhere (product_id, year) in (select product_id, min(year) from sales group by product_id) | 3 | 0 | [] | 0 |
product-sales-analysis-iii | Why Row_number failed? | why-row_number-failed-by-yz541-q1j2 | Using rank over works, can anyone help me understand why switching to row_number failed for this problem?? From my understanding there should not be any differ | yz541 | NORMAL | 2020-01-09T14:52:44.165435+00:00 | 2020-01-09T14:52:44.165464+00:00 | 345 | false | Using rank over works, can anyone help me understand why switching to row_number failed for this problem?? From my understanding there should not be any difference using the two in this case. \n\n```\nselect product_id, year as first_year, quantity, price from\n(select product_id, year, quantity, price, rank()over(pa... | 3 | 0 | [] | 2 |
product-sales-analysis-iii | Easy MySQL solution | easy-mysql-solution-by-chaudharysrikant-prjb | IntuitionTo solve this problem, we need to find the first year each product was sold and retrieve the corresponding sales data (quantity and price). The key ide | chaudharysrikant | NORMAL | 2025-02-11T18:58:06.957040+00:00 | 2025-02-11T18:58:06.957040+00:00 | 540 | false | # Intuition
<!-- Describe your first thoughts on how to solve this problem. -->
To solve this problem, we need to find the first year each product was sold and retrieve the corresponding sales data (quantity and price). The key idea is to:
1. Identify the earliest year (MIN(year)) for each product.
2. Use this inform... | 2 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | Easy and Simple Solution | easy-and-simple-solution-by-mayankluthya-9gwg | Please Like ❤️IntuitionWe need to find the first year in which each product was sold along with its quantity and price.Approach
Find the earliest year for each | mayankluthyagi | NORMAL | 2025-02-10T15:11:03.528598+00:00 | 2025-02-10T15:11:03.528598+00:00 | 261 | false | ```mysql
# Write your MySQL query statement below
SELECT product_id, year AS first_year, quantity, price
FROM Sales
WHERE (product_id, year) IN (
SELECT product_id, MIN(year) AS year
FROM Sales
GROUP BY product_id
);
```
# Please Like ❤️
$$ -->
- Space complexity:
<!-- Add your space complexity here, e.g. $$O(n)$$ -->
# Code
`... | 2 | 0 | ['MS SQL Server'] | 1 |
product-sales-analysis-iii | EASIEST SOLUTION WITH 1046ms RUNTIME and BEATS 74.61% | easiest-solution-with-1046ms-runtime-and-3994 | Intuition\n Describe your first thoughts on how to solve this problem. \nTo find the first year each product was sold and retreive the quantity and price for th | saikrish230503 | NORMAL | 2024-11-11T15:28:26.476210+00:00 | 2024-11-11T15:28:26.476247+00:00 | 123 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\nTo find the first year each product was sold and retreive the quantity and price for the year \n# Approach\n<!-- Describe your approach to solving the problem. -->\nIdentify the first year each product was sold and then retrieve them usin... | 2 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | Easy to understand Pandas solution | easy-to-understand-pandas-solution-by-sh-2ihs | Approach\nWe first get all first years of each product, using groupby and transform.\nThen we get a subset of all sales data where products were sold in their f | shaikasaad | NORMAL | 2024-10-30T15:26:11.146832+00:00 | 2024-10-30T15:26:11.146871+00:00 | 119 | false | # Approach\nWe first get all first years of each product, using groupby and transform.\nThen we get a subset of all sales data where products were sold in their first year\nLastly, we return the required columns\n# Code\n```pythondata []\nimport pandas as pd\n\ndef sales_analysis(sales: pd.DataFrame, product: pd.DataFr... | 2 | 0 | ['Database', 'Python3', 'Pandas'] | 0 |
product-sales-analysis-iii | 1070. Product Sales Analysis III # best solution # beats 99.83% | 1070-product-sales-analysis-iii-best-sol-jfqo | Intuition\nWe can either solve using a min(year) or using windows function Rank\n\n# Approach\nHere I have assigned the rank to each record based on the year of | Vivek_Rahul_ch | NORMAL | 2024-10-13T13:23:25.844437+00:00 | 2024-10-13T13:23:25.844458+00:00 | 1,296 | false | # Intuition\nWe can either solve using a min(year) or using windows function Rank\n\n# Approach\nHere I have assigned the rank to each record based on the year of the sales\n\n# Complexity\n- Time complexity:\n813ms\n\n- Space complexity:\n0B\n\n# Code\n```mysql []\n# Write your MySQL query statement below\nwith sale a... | 2 | 0 | ['MySQL'] | 1 |
product-sales-analysis-iii | Solution to the CORRECT version of this question | solution-to-the-correct-version-of-this-7r8bu | Intuition\nThe present version of the question, as well as it\'s test cases are incorrect. The product table is correctly present, but test cases do not seem to | mrkorolev | NORMAL | 2024-06-17T22:24:07.221365+00:00 | 2024-06-17T22:24:07.221391+00:00 | 455 | false | # Intuition\nThe present version of the question, as well as it\'s test cases are incorrect. The product table is correctly present, but test cases do not seem to be using it properly.\n\n# Approach\nMy first solution went through all possible tests:\n```\nSELECT product_id, year AS first_year, quantity, price\nFROM sa... | 2 | 0 | ['PostgreSQL'] | 1 |
product-sales-analysis-iii | Solution using Sub-query and Window function | solution-using-sub-query-and-window-func-fwxz | Intuition\n Describe your first thoughts on how to solve this problem. \nTo group the result set and identify the first record by year.\n# Approach\n Describe y | 6edQektZ0C | NORMAL | 2024-06-05T01:38:57.529712+00:00 | 2024-06-05T01:53:53.955705+00:00 | 358 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\nTo group the result set and identify the first record by year.\n# Approach\n<!-- Describe your approach to solving the problem. -->\nTo group the data, window function is used, the first_value window function identifies the first_year par... | 2 | 0 | ['PostgreSQL'] | 0 |
product-sales-analysis-iii | ORACLE | EASY SOLUTUION | USING WITH() | RANK() | oracle-easy-solutuion-using-with-rank-by-ebj2 | Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time | shivangisharma94 | NORMAL | 2024-06-01T09:31:08.826052+00:00 | 2024-06-01T09:31:08.826072+00:00 | 1,583 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ --... | 2 | 0 | ['Oracle'] | 1 |
product-sales-analysis-iii | WINDOW-Solution | window-solution-by-your8god-byeb | Intuition\nWe can use window-function to get the first year. This part we just put to CTE.\nAfter that we can find answers comparing current year and the first | your8god | NORMAL | 2024-05-13T09:59:48.624196+00:00 | 2024-05-16T07:35:59.430215+00:00 | 1,071 | false | # Intuition\nWe can use window-function to get the first year. This part we just put to CTE.\nAfter that we can find answers comparing current year and the first year\n\n# Code\n```\nWITH helper AS \n(\n SELECT Sales.* ,\n FIRST_VALUE(year) OVER (PARTITION BY product_id ORDER BY product_id, year) first_year\n... | 2 | 0 | ['Sliding Window', 'PostgreSQL'] | 2 |
product-sales-analysis-iii | SQL SERVER | sql-server-by-lshigami-jsxu | \n# Code\n\nWITH cte AS (\n SELECT product_id, MIN(year) AS minyear \n FROM sales \n GROUP BY product_id \n)\nSELECT s.product_id, s.year AS first_year | lshigami | NORMAL | 2024-04-04T00:51:02.578511+00:00 | 2024-04-04T00:51:02.578539+00:00 | 782 | false | \n# Code\n```\nWITH cte AS (\n SELECT product_id, MIN(year) AS minyear \n FROM sales \n GROUP BY product_id \n)\nSELECT s.product_id, s.year AS first_year, s.quantity, s.price \nFROM sales s\nINNER JOIN cte ON cte.product_id = s.product_id \n AND s.year = cte.minyear;\n\n``` | 2 | 0 | ['MS SQL Server'] | 2 |
product-sales-analysis-iii | Beats 95.24% | Easy solution Using Subquery and min() function | beats-9524-easy-solution-using-subquery-o98u0 | Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time | vp13112000 | NORMAL | 2024-02-16T20:28:47.427224+00:00 | 2024-02-16T20:28:47.427255+00:00 | 1,279 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ --... | 2 | 0 | ['MySQL'] | 1 |
product-sales-analysis-iii | Efficient Query | efficient-query-by-krishnak7-6x88 | Code\n\nselect product_id , year as first_year , quantity , price from sales \nwhere (product_id , year) in (select product_id , min(year) as year \n | KrishnaK7 | NORMAL | 2023-11-21T17:45:28.708418+00:00 | 2023-11-21T17:45:28.708447+00:00 | 1,403 | false | # Code\n```\nselect product_id , year as first_year , quantity , price from sales \nwhere (product_id , year) in (select product_id , min(year) as year \n from sales group by product_id)\n\n\n``` | 2 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | Oracle PLSQL solution using rank | oracle-plsql-solution-using-rank-by-diby-2mka | Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time | DibyaJyoti_Sarmah | NORMAL | 2023-06-06T09:41:25.823009+00:00 | 2023-06-06T09:41:25.823067+00:00 | 1,591 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ --... | 2 | 0 | ['Oracle'] | 1 |
product-sales-analysis-iii | easy oracle solution | easy-oracle-solution-by-sirojiddin12-w8h1 | Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time | Sirojiddin12 | NORMAL | 2023-04-30T00:06:47.199478+00:00 | 2023-04-30T00:06:47.199523+00:00 | 272 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ --... | 2 | 0 | ['Oracle'] | 0 |
product-sales-analysis-iii | Using Subquery and self join | using-subquery-and-self-join-by-rjvshrm-0g9w | Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time | rjvshrm | NORMAL | 2023-04-23T18:06:35.892001+00:00 | 2023-04-23T18:06:35.892076+00:00 | 1,067 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ --... | 2 | 0 | ['MS SQL Server'] | 1 |
product-sales-analysis-iii | SOLUTION: WINDOW FUNCTION RANK() OVER() => FOR BIG DATA ( MySQL + SQL Server) 🔥🔥🔥🔥 | solution-window-function-rank-over-for-b-myxz | Intuition\r\n Describe your first thoughts on how to solve this problem. \r\n\r\n# Approach\r\n Describe your approach to solving the problem. \r\n\r\n# Complex | cooking_Guy_9ice | NORMAL | 2023-04-18T09:42:12.812096+00:00 | 2023-07-21T07:27:54.964887+00:00 | 3,179 | false | # Intuition\r\n<!-- Describe your first thoughts on how to solve this problem. -->\r\n\r\n# Approach\r\n<!-- Describe your approach to solving the problem. -->\r\n\r\n# Complexity\r\n- Time complexity:\r\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\r\n\r\n- Space complexity:\r\n<!-- Add your space complexity ... | 2 | 0 | ['MS SQL Server'] | 3 |
product-sales-analysis-iii | concat | concat-by-paonevergivup-6moc | select product_id, year as first_year, quantity, price\nfrom Sales\nwhere concat(product_id, year) in (select concat(product_id, min(year)) from Sales group by | paonevergivup | NORMAL | 2022-06-28T19:32:08.134140+00:00 | 2022-06-28T19:32:08.134182+00:00 | 37 | false | select product_id, year as first_year, quantity, price\nfrom Sales\nwhere concat(product_id, year) in (select concat(product_id, min(year)) from Sales group by product_id | 2 | 0 | [] | 0 |
product-sales-analysis-iii | 🚀 Simplest Solution Using Rank 👍✨ | simplest-solution-using-rank-by-vadlamud-xvm6 | \n# Code author Naveen Kumar Vadlamudi \n# Simplest Solution Using Rank..\n# Upvote if it helps \uD83D\uDC4D\n\nSELECT \nA.PRODUCT_ID,\nA.YEAR AS FIRST_YEAR,\nA | vadlamudinaveen999 | NORMAL | 2022-06-28T01:59:32.571899+00:00 | 2022-06-28T02:00:18.600579+00:00 | 273 | false | ```\n# Code author Naveen Kumar Vadlamudi \n# Simplest Solution Using Rank..\n# Upvote if it helps \uD83D\uDC4D\n\nSELECT \nA.PRODUCT_ID,\nA.YEAR AS FIRST_YEAR,\nA.QUANTITY,\nA.PRICE\nFROM\n(\n SELECT *,\n DENSE_RANK() OVER(PARTITION BY PRODUCT_ID ORDER BY YEAR) AS CRANK\n FROM SALES\n) A\nWHERE A.CRANK = 1 \... | 2 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | my SQL inner join solution - works | my-sql-inner-join-solution-works-by-boke-z76c | select s.product_id, first_year, quantity, price \nfrom sales s \ninner join(\nselect product_id, min(year) as first_year \nfrom sales \ngroup by product_id \n | bokelai1989 | NORMAL | 2020-08-25T14:42:37.936535+00:00 | 2020-08-25T14:42:37.936587+00:00 | 145 | false | select s.product_id, first_year, quantity, price \nfrom sales s \ninner join(\nselect product_id, min(year) as first_year \nfrom sales \ngroup by product_id \n) as a \non s.product_id = a.product_id and s.year = a.first_year | 2 | 1 | [] | 0 |
product-sales-analysis-iii | why this is not working in mysql | why-this-is-not-working-in-mysql-by-qtmd-ccqs | select product_id, min(year) as first_year, quantity, price from Sales group by product_id;\n\n\n\nthanks for reply.\n\n\n | qtmdsxydz | NORMAL | 2020-02-26T15:15:53.058435+00:00 | 2020-02-26T15:15:53.058480+00:00 | 309 | false | select product_id, min(year) as first_year, quantity, price from Sales group by product_id;\n\n\n\nthanks for reply.\n\n\n | 2 | 0 | [] | 1 |
product-sales-analysis-iii | MSSQLSERVER 97% faster and easier to understand | mssqlserver-97-faster-and-easier-to-unde-61fc | select\nproduct_id,year as first_year,quantity,price\nfrom\n(select\nproduct_id,year,quantity,price,\nrank() over (partition by product_id order by year) as yea | karthik3010 | NORMAL | 2019-11-11T08:57:15.524165+00:00 | 2019-11-11T08:57:15.524234+00:00 | 324 | false | select\nproduct_id,year as first_year,quantity,price\nfrom\n(select\nproduct_id,year,quantity,price,\nrank() over (partition by product_id order by year) as year_row\nfrom\nsales)a where a.year_row = 1 | 2 | 1 | [] | 1 |
product-sales-analysis-iii | Mysql solution faster than 100% so far | mysql-solution-faster-than-100-so-far-by-gi4v | \nselect s.product_id, s.year as first_year, s.quantity, s.price\nfrom Sales s\njoin (\nselect product_id, min(year) as y1\nfrom Sales\ngroup by product_id) t\n | omglalaalahaha | NORMAL | 2019-06-06T17:00:44.887748+00:00 | 2019-06-06T17:00:44.887800+00:00 | 751 | false | ```\nselect s.product_id, s.year as first_year, s.quantity, s.price\nfrom Sales s\njoin (\nselect product_id, min(year) as y1\nfrom Sales\ngroup by product_id) t\non (s.product_id=t.product_id and s.year=t.y1)\n``` | 2 | 0 | [] | 2 |
product-sales-analysis-iii | Easy Solution || MYSQL🤓🚀 | easy-solution-mysql-by-uwwcpcfmx5-6sdi | CodeFeel Free To Ask Your Queries | UWWcPcfMx5 | NORMAL | 2025-03-30T09:29:18.829277+00:00 | 2025-03-30T09:29:18.829277+00:00 | 346 | false |
# Code
```mysql []
# Write your MySQL query statement below
select product_id,year as first_year, quantity, price
from Sales
where(product_id, year) in (select product_id, min(year) from Sales group by product_id)
```
# Feel Free To Ask Your Queries | 1 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | ✅"Easy-way to solve this mysql problem"|99.50% beats|💯🎯😊 | easy-way-to-solve-this-mysql-problem9950-r53a | Approachwe want to the task is to select the product,year,quantity,price for the first year of sales for every product.Code | kabirydv | NORMAL | 2025-03-28T13:43:52.063728+00:00 | 2025-03-28T13:43:52.063728+00:00 | 271 | false |
# Approach
<!-- Describe your approach to solving the problem. -->
**we want to the task is to select the product,year,quantity,price for the first year of sales for every product.**
# Code
```mysql []
# Write your MySQL query statement below
WITH FirstYearSales AS (SELECT product_id,MIN(year) AS first_year
FROM Sal... | 1 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | Easy Solution I guess 🔥 | easy-solution-i-guess-by-amoghamayya-cyty | IntuitionApproachComplexity
Time complexity:
Space complexity:
Code | AmoghaMayya | NORMAL | 2025-03-23T15:10:08.464838+00:00 | 2025-03-23T15:10:08.464838+00:00 | 320 | false | # Intuition
<!-- Describe your first thoughts on how to solve this problem. -->
# Approach
<!-- Describe your approach to solving the problem. -->
# Complexity
- Time complexity:
<!-- Add your time complexity here, e.g. $$O(n)$$ -->
- Space complexity:
<!-- Add your space complexity here, e.g. $$O(n)$$ -->
# Code
`... | 1 | 0 | ['PostgreSQL'] | 0 |
product-sales-analysis-iii | More efficient alternative to using IN Subqueries 🚀 | more-efficient-alternative-to-using-in-s-5vwm | Did you find this helpful? If so, Please let me a 👍IntuitionTo solve this problem, we need to find, for each product, the first year it was sold and return its | giandev10 | NORMAL | 2025-03-22T01:13:02.416576+00:00 | 2025-03-22T01:13:02.416576+00:00 | 242 | false | **Did you find this helpful?** If so, Please let me a 👍
---
# Intuition
To solve this problem, we need to find, for each product, the first year it was sold and return its corresponding sale details — specifically, the quantity and price. Our goal is to match each product with its earliest year of sale and retrieve ... | 1 | 0 | ['MS SQL Server'] | 1 |
product-sales-analysis-iii | product sales analysis III | product-sales-analysis-iii-by-avinash516-v42h | IntuitionApproachComplexity
Time complexity:
Space complexity:
Code | avinash516 | NORMAL | 2025-03-14T11:09:22.239308+00:00 | 2025-03-14T11:09:22.239308+00:00 | 52 | false | # Intuition
<!-- Describe your first thoughts on how to solve this problem. -->
# Approach
<!-- Describe your approach to solving the problem. -->
# Complexity
- Time complexity:
<!-- Add your time complexity here, e.g. $$O(n)$$ -->
- Space complexity:
<!-- Add your space complexity here, e.g. $$O(n)$$ -->
# Code
`... | 1 | 1 | ['MySQL'] | 0 |
product-sales-analysis-iii | Easy Simple Solution in MYSQL | easy-simple-solution-in-mysql-by-musafir-47we | \Code | musafircodes | NORMAL | 2025-03-13T15:23:35.992513+00:00 | 2025-03-13T15:23:35.992513+00:00 | 300 | false | \
# Code
```mysql []
select
product_id,
year as first_year,
quantity,
price
from Sales
where (product_id,year) in (
select product_id,MIN(year) as mf_year
from Sales
group by product_id
)
``` | 1 | 0 | ['Database', 'MySQL'] | 0 |
product-sales-analysis-iii | SQL Server | sql-server-by-adchoudhary-j79c | Code | adchoudhary | NORMAL | 2025-03-12T02:07:56.964578+00:00 | 2025-03-12T02:07:56.964578+00:00 | 303 | false | # Code
```mssql []
WITH CTE AS (
SELECT product_id, MIN(year) AS minyear FROM Sales
GROUP BY product_id
)
SELECT s.product_id, s.year AS first_year, s.quantity, s.price
FROM Sales s
INNER JOIN CTE ON cte.product_id = s.product_id AND s.year = cte.minyear;
``` | 1 | 0 | ['MS SQL Server'] | 0 |
product-sales-analysis-iii | Easy Explanation | easy-explanation-by-pratyushpanda91-z5b8 | Explanation:Recursive Flattening:The helper function flatten takes the current depth and the array as arguments.
If the currentDepth reaches 0, it stops flatten | pratyushpanda91 | NORMAL | 2025-01-25T16:34:59.585355+00:00 | 2025-01-25T16:34:59.585355+00:00 | 141 | false | # Explanation:
### Recursive Flattening:
The helper function flatten takes the current depth and the array as arguments.
If the currentDepth reaches 0, it stops flattening and returns the array as is.
### Handling Arrays and Non-Arrays:
If an element is an array, it is recursively flattened with the depth reduced by 1.... | 1 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | Easy Solution using RANK 🔥 | easy-solution-using-rank-by-amoghamayya-pl3o | ApproachThe first step is to join the sales and product tables based on the product_id. This ensures we retrieve the required columns: product_id, year, quantit | AmoghaMayya | NORMAL | 2025-01-25T06:05:35.226240+00:00 | 2025-01-25T06:05:35.226240+00:00 | 460 | false |
# Approach
<!-- Describe your approach to solving the problem. -->
The first step is to join the sales and product tables based on the product_id. This ensures we retrieve the required columns: product_id, year, quantity, and price.
**Ranking with Window Function:**
Use the RANK() function with a PARTITION BY product... | 1 | 0 | ['PostgreSQL'] | 0 |
product-sales-analysis-iii | 👉🏻FAST AND EASY TO UNDERSTAND SOLUTION || MySQL | fast-and-easy-to-understand-solution-mys-y0rt | IntuitionApproachComplexity
Time complexity:
Space complexity:
Code | djain7700 | NORMAL | 2025-01-08T18:04:40.720939+00:00 | 2025-01-08T18:04:40.720939+00:00 | 113 | false | # Intuition
<!-- Describe your first thoughts on how to solve this problem. -->
# Approach
<!-- Describe your approach to solving the problem. -->
# Complexity
- Time complexity:
<!-- Add your time complexity here, e.g. $$O(n)$$ -->
- Space complexity:
<!-- Add your space complexity here, e.g. $$O(n)$$ -->
# Code
`... | 1 | 0 | ['Database', 'MySQL'] | 0 |
product-sales-analysis-iii | ✅✅Beats 99%🔥MySQL🔥|| 🚀🚀Super Simple and Efficient Solution🚀🚀||🔥🔥MySQL✅✅ | beats-99mysql-super-simple-and-efficient-ktax | Code | shobhit_yadav | NORMAL | 2024-12-27T09:39:01.354342+00:00 | 2024-12-27T09:40:05.111324+00:00 | 476 | false | # Code
```mysql []
# Write your MySQL query statement below
WITH
ProductToYear AS (
SELECT product_id, MIN(year) AS year
FROM Sales
GROUP BY 1
)
SELECT
Sales.product_id,
ProductToYear.year AS first_year,
Sales.quantity,
Sales.price
FROM Sales
INNER JOIN ProductToYear
USING (product_id, year);
... | 1 | 0 | ['Database', 'MySQL'] | 0 |
product-sales-analysis-iii | 👉🏻EASY TO UNDERSTAND SOLUTION || MySQL | easy-to-understand-solution-mysql-by-sid-fsx5 | IntuitionApproachComplexity
Time complexity:
Space complexity:
Code | Siddarth9911 | NORMAL | 2024-12-22T16:55:46.986668+00:00 | 2024-12-22T16:55:46.986668+00:00 | 420 | false | # Intuition
<!-- Describe your first thoughts on how to solve this problem. -->
# Approach
<!-- Describe your approach to solving the problem. -->
# Complexity
- Time complexity:
<!-- Add your time complexity here, e.g. $$O(n)$$ -->
- Space complexity:
<!-- Add your space complexity here, e.g. $$O(n)$$ -->
# Code
`... | 1 | 0 | ['MySQL'] | 0 |
product-sales-analysis-iii | Pandas, Polars, PostgreSQL | pandas-polars-postgresql-by-speedyy-n9dk | Its better to solve Game Play Analysis IV first (Solution, 2nd Logic used here)\n- No need INNER JOIN between these 2 tables because product_id in sales table i | speedyy | NORMAL | 2024-11-04T17:05:36.985988+00:00 | 2024-11-04T19:44:34.174552+00:00 | 24 | false | - Its better to solve [Game Play Analysis IV](https://leetcode.com/problems/game-play-analysis-iv/description/) first ([Solution](https://leetcode.com/problems/game-play-analysis-iv/solutions/5996925/pandas-polars-postgresql), `2nd Logic` used here)\n- No need `INNER JOIN between these 2 tables` because `product_id` in... | 1 | 0 | ['PostgreSQL', 'Pandas'] | 0 |
product-sales-analysis-iii | Subqueries are powerful Specially beats Self JOIN | subqueries-are-powerful-specially-beats-xd5ro | Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time | alif126426 | NORMAL | 2024-10-27T16:21:51.305844+00:00 | 2024-10-27T16:21:51.305877+00:00 | 508 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ --... | 1 | 0 | ['MySQL'] | 2 |
product-sales-analysis-iii | Easy Solution || SQL || For Beginner's Only | easy-solution-sql-for-beginners-only-by-ilike | Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time | GhatakCoder | NORMAL | 2024-10-11T20:49:28.571988+00:00 | 2024-10-11T20:49:28.572027+00:00 | 214 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ --... | 1 | 0 | ['MySQL'] | 1 |
product-sales-analysis-iii | Beats 97.63% | 2 Ways| CTE | Dense_Rank | beats-9763-2-ways-cte-dense_rank-by-bloo-yas2 | \n\n# Code\n## First Way\n\n/* Write your T-SQL query statement below */\nWith cte as(\n select product_id, min(year) as first_year\n from Sales\n group by prod | Bloom0010 | NORMAL | 2024-08-03T14:42:08.063717+00:00 | 2024-08-03T14:42:08.063743+00:00 | 191 | false | \n\n# Code\n## First Way\n```\n/* Write your T-SQL query statement below */\nWith cte as(\n select product_id, min(year) as first_year\n from Sales\n group by product_id\n )\nselect cte.product_id, cte.first_year, quantity,price\nfrom cte join Sales on cte.product_id = Sales.product_id and cte.first_year=Sales.year\n\n... | 1 | 0 | ['MS SQL Server'] | 1 |
product-sales-analysis-iii | 🐘PostgreSQL ❗ Beats 91.48% ❗ Simple solution with FIRST_VALUE window function | postgresql-beats-9148-simple-solution-wi-wgyg | Approach\nThis SQL query you have written aims to extract the first year, quantity, and price for each product in the sales table. The subquery assigns the firs | IliaAvdeev | NORMAL | 2024-05-27T11:26:23.098954+00:00 | 2024-05-27T11:26:23.098986+00:00 | 114 | false | # Approach\nThis SQL query you have written aims to extract the first year, quantity, and price for each product in the sales table. The subquery assigns the first year of sales for each product using the `FIRST_VALUE` window function, and the outer query filters the results to include only the records where the year m... | 1 | 0 | ['PostgreSQL'] | 0 |
product-sales-analysis-iii | Beats 76% | Simple CTE| | beats-76-simple-cte-by-nithin415-3ynx | Intuition\nFirst we need to find first year per product_id then fetch the results.\n\n# Approach\nFor selecting first year we are using cte which is "with" to f | Nithin415 | NORMAL | 2024-04-20T05:02:05.759847+00:00 | 2024-04-20T05:02:05.759875+00:00 | 197 | false | # Intuition\nFirst we need to find first year per product_id then fetch the results.\n\n# Approach\nFor selecting first year we are using cte which is "with" to find first year and grouping it with product_id.\nusing it i main query and join conditions where both product and year are matching will give us desired resul... | 1 | 0 | ['Oracle'] | 1 |
product-sales-analysis-iii | RANK() function MYSQL | rank-function-mysql-by-mengchen_ye-pc4f | Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time | Mengchen_Ye | NORMAL | 2024-03-16T01:33:22.415907+00:00 | 2024-03-16T01:33:22.415931+00:00 | 353 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ --... | 1 | 0 | ['MySQL'] | 2 |
product-sales-analysis-iii | 💣 using FIRST_VALUE function in Oracle | using-first_value-function-in-oracle-by-pznhi | \n# 1\uFE0F\u20E3. FIRST_VALUE Code\nsql\n/* Write your PL/SQL query statement below */\nWITH sale_id_first AS (\n SELECT \n product_id,\n year | ayon_ssp | NORMAL | 2024-02-09T14:52:43.858007+00:00 | 2024-02-09T14:52:43.858036+00:00 | 1,743 | false | \n# 1\uFE0F\u20E3. FIRST_VALUE Code\n```sql\n/* Write your PL/SQL query statement below */\nWITH sale_id_first AS (\n SELECT \n product_id,\n year,\n FIRST_VALUE(year) OVER (PARTITION BY product_id ORDER BY year) AS first_year,\n quantity,\n price \n FROM sales\n)\nSELECT \n ... | 1 | 0 | ['Oracle'] | 1 |
product-sales-analysis-iii | 100 % || EASY & INTUITIVE || SQL QUERY || ( Well - Defined ) || Using Sub - Query || Beats 96.92 %.. | 100-easy-intuitive-sql-query-well-define-a3r9 | Intuition\n Describe your first thoughts on how to solve this problem. \nSELECT product_id, --> show the product_id from Sales table...\nyear AS first_year, --> | ganpatinath07 | NORMAL | 2024-02-07T16:06:46.057231+00:00 | 2024-02-07T16:06:46.057250+00:00 | 1,452 | false | # Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\nSELECT product_id, --> show the product_id from Sales table...\nyear AS first_year, --> also show year alias as first_year...\nquantity, price --> also show quantity & price from Sales table...\nFROM Sales --> Association from Sales table... | 1 | 0 | ['Database', 'MySQL'] | 4 |
employees-with-missing-information | Implementing FULL JOIN in MySQL | implementing-full-join-in-mysql-by-speed-6hkk | There is no natively implemented Outer Join in MySQL.\n But we can implement OUTER JOIN in MySQL by taking a LEFT JOIN and RIGHT JOIN union.\n If column names o | speedychital | NORMAL | 2022-04-14T09:56:08.409093+00:00 | 2022-11-20T04:16:21.649015+00:00 | 40,641 | false | * There is no natively implemented Outer Join in MySQL.\n* But we can implement **OUTER JOIN** in MySQL by taking a LEFT JOIN and RIGHT JOIN union.\n* If column names of two tables are identical, we can use the USING clause instead of the ON clause.\n```\nSELECT T.employee_id\nFROM \n (SELECT * FROM Employees LEFT JO... | 272 | 0 | ['Union Find', 'MySQL'] | 21 |
employees-with-missing-information | UNION + WHERE NOT IN () | union-where-not-in-by-mirandanathan-p3v6 | \nSELECT employee_id FROM Employees WHERE employee_id NOT IN (SELECT employee_id FROM Salaries)\nUNION \nSELECT employee_id FROM Salaries WHERE employee_id NOT | mirandanathan | NORMAL | 2021-08-08T16:11:40.241107+00:00 | 2021-08-08T16:11:40.241148+00:00 | 22,357 | false | ```\nSELECT employee_id FROM Employees WHERE employee_id NOT IN (SELECT employee_id FROM Salaries)\nUNION \nSELECT employee_id FROM Salaries WHERE employee_id NOT IN (SELECT employee_id FROM Employees)\n\nORDER BY 1 ASC\n``` | 196 | 1 | [] | 14 |
employees-with-missing-information | ⭐TWO METHODS BY Using JOINS and UNION (Full outer join) || mySQL⭐ | two-methods-by-using-joins-and-union-ful-6hwv | \uD83D\uDE0APLEASE UPVOTE IF YOU FIND USEFUL \uD83D\uDE0A\nFull outer join is not supported in mySQL , instead we use UNION\nMethod1\n\nSELECT employee_id from | 123_tripathi | NORMAL | 2022-08-28T16:05:32.145133+00:00 | 2022-08-28T16:05:58.750713+00:00 | 13,770 | false | **\uD83D\uDE0APLEASE UPVOTE IF YOU FIND USEFUL \uD83D\uDE0A**\n*Full outer join is not supported in mySQL , instead we use UNION*\n**Method1**\n```\nSELECT employee_id from Employees e WHERE employee_id not in (Select employee_id from Salaries)\nUNION \nSELECT employee_id from Salaries s WHERE employee_id not in (Selec... | 91 | 0 | ['Union Find', 'MySQL'] | 7 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.