| |
| |
| |
|
|
| from snowflake.sqlalchemy import ( |
| AzureContainer, |
| CreateFileFormat, |
| CreateStage, |
| CSVFormatter, |
| ExternalStage, |
| PARQUETFormatter, |
| ) |
|
|
|
|
| def test_create_stage(sql_compiler): |
| """ |
| This test compiles the SQL to create a named stage, by defining the stage naming |
| information (namespace and name) and the physical storage information (here: an |
| Azure container), and combining them in a CreateStage object |
| NB: The test only validates that the correct SQL is generated. It does not |
| execute the SQL (yet) against an actual Snowflake instance. |
| """ |
| |
| stage = ExternalStage( |
| name="AZURE_STAGE", |
| namespace="MY_DB.MY_SCHEMA", |
| ) |
| |
| container = AzureContainer( |
| account="myaccount", container="my-container" |
| ).credentials("saas_token") |
| |
| create_stage = CreateStage(stage=stage, container=container) |
|
|
| |
| actual = sql_compiler(create_stage) |
| expected = ( |
| "CREATE STAGE MY_DB.MY_SCHEMA.AZURE_STAGE " |
| "URL='azure://myaccount.blob.core.windows.net/my-container' " |
| "CREDENTIALS=(AZURE_SAS_TOKEN='saas_token')" |
| ) |
| assert actual == expected |
|
|
| create_stage_replace = CreateStage( |
| stage=stage, container=container, replace_if_exists=True |
| ) |
|
|
| |
| actual = sql_compiler(create_stage_replace) |
| expected = ( |
| "CREATE OR REPLACE STAGE MY_DB.MY_SCHEMA.AZURE_STAGE " |
| "URL='azure://myaccount.blob.core.windows.net/my-container' " |
| "CREDENTIALS=(AZURE_SAS_TOKEN='saas_token')" |
| ) |
| assert actual == expected |
|
|
| create_stage = CreateStage(stage=stage, container=container, temporary=True) |
| |
| actual = sql_compiler(create_stage) |
| expected = ( |
| "CREATE TEMPORARY STAGE MY_DB.MY_SCHEMA.AZURE_STAGE " |
| "URL='azure://myaccount.blob.core.windows.net/my-container' " |
| "CREDENTIALS=(AZURE_SAS_TOKEN='saas_token')" |
| ) |
| assert actual == expected |
|
|
|
|
| def test_create_csv_format(sql_compiler): |
| """ |
| This test compiles the SQL to create a named CSV format. The format is defined |
| using a name and a formatter object with the detailed formatting information. |
| TODO: split name parameters into namespace and actual name |
| |
| NB: The test only validates that the correct SQL is generated. It does not |
| execute the SQL (yet) against an actual Snowflake instance. |
| """ |
| create_format = CreateFileFormat( |
| format_name="ML_POC.PUBLIC.CSV_FILE_FORMAT", |
| formatter=CSVFormatter().field_delimiter(","), |
| ) |
| actual = sql_compiler(create_format) |
| expected = ( |
| "CREATE FILE FORMAT ML_POC.PUBLIC.CSV_FILE_FORMAT " |
| "TYPE='csv' FIELD_DELIMITER = ','" |
| ) |
| assert actual == expected |
|
|
| create_format_replace = CreateFileFormat( |
| format_name="ML_POC.PUBLIC.CSV_FILE_FORMAT", |
| formatter=CSVFormatter().field_delimiter(","), |
| replace_if_exists=True, |
| ) |
| actual = sql_compiler(create_format_replace) |
| expected = ( |
| "CREATE OR REPLACE FILE FORMAT ML_POC.PUBLIC.CSV_FILE_FORMAT " |
| "TYPE='csv' FIELD_DELIMITER = ','" |
| ) |
| assert actual == expected |
|
|
|
|
| def test_create_parquet_format(sql_compiler): |
| """ |
| This test compiles the SQL to create a named Parquet format. The format is defined |
| using a name and a formatter object with the detailed formatting information. |
| TODO: split name parameters into namespace and actual name |
| |
| NB: The test only validates that the correct SQL is generated. It does not |
| execute the SQL (yet) against an actual Snowflake instance. |
| |
| """ |
| create_format = CreateFileFormat( |
| format_name="ML_POC.PUBLIC.CSV_FILE_FORMAT", |
| formatter=PARQUETFormatter().compression("AUTO"), |
| ) |
| actual = sql_compiler(create_format) |
| expected = ( |
| "CREATE FILE FORMAT ML_POC.PUBLIC.CSV_FILE_FORMAT " |
| "TYPE='parquet' COMPRESSION = 'AUTO'" |
| ) |
| assert actual == expected |
|
|
| create_format_replace = CreateFileFormat( |
| format_name="ML_POC.PUBLIC.CSV_FILE_FORMAT", |
| formatter=PARQUETFormatter().compression("AUTO"), |
| replace_if_exists=True, |
| ) |
| actual = sql_compiler(create_format_replace) |
| expected = ( |
| "CREATE OR REPLACE FILE FORMAT ML_POC.PUBLIC.CSV_FILE_FORMAT " |
| "TYPE='parquet' COMPRESSION = 'AUTO'" |
| ) |
| assert actual == expected |
|
|
