-- Generated by Misata Studio engine 0.1.0. Dialect: clickhouse.

-- ClickHouse declares no foreign keys: each table's relationships are listed above it, and every one holds in the rows.

CREATE TABLE "stores" (
  "store_id" UInt32,
  "store_name" LowCardinality(String),
  "channel" LowCardinality(String),
  "country" LowCardinality(String),
  "region" LowCardinality(String),
  "city" LowCardinality(String)
) ENGINE = MergeTree ORDER BY ("store_id");

CREATE TABLE "products" (
  "product_id" UInt32,
  "subcategory" String,
  "category" String,
  "product_name" LowCardinality(String),
  "brand" String,
  "list_price" Float64,
  "unit_cost" Float64
) ENGINE = MergeTree ORDER BY ("product_id");

CREATE TABLE "customers" (
  "customer_id" UInt32,
  "customer_name" String,
  "segment" LowCardinality(Nullable(String)),
  "country" String,
  "region" String,
  "city" String,
  "signup_date" Date
) ENGINE = MergeTree ORDER BY ("customer_id");

-- orders.customer_id -> customers.customer_id
-- orders.store_id -> stores.store_id
CREATE TABLE "orders" (
  "order_id" UInt32,
  "order_date" Date,
  "customer_id" Nullable(UInt32),
  "store_id" UInt32
) ENGINE = MergeTree ORDER BY ("order_id");

-- order_lines.order_id -> orders.order_id
-- order_lines.product_id -> products.product_id
CREATE TABLE "order_lines" (
  "order_line_id" UInt32,
  "order_id" UInt32,
  "order_date" DateTime64(3, 'UTC'),
  "customer_id" Nullable(UInt32),
  "store_id" UInt8,
  "product_id" UInt32,
  "quantity" UInt8,
  "unit_price" Decimal(9, 2),
  "unit_cost" Float64,
  "discount_pct" Float64,
  "net_amount" Float64,
  "cost_amount" Float64
) ENGINE = MergeTree ORDER BY ("order_line_id");

-- returns.order_line_id -> order_lines.order_line_id
CREATE TABLE "returns" (
  "return_id" UInt32,
  "order_line_id" UInt32,
  "return_date" Date,
  "returned_qty" UInt8,
  "reason" LowCardinality(String)
) ENGINE = MergeTree ORDER BY ("return_date", "return_id");