datastore/tests/benchmarks/tpc-ds/queries/query_75.sql

--  "0." -> CAST('0.0', 'Decimal(7, 2)'). Needs to be fixed: https://github.com/ClickHouse/ClickHouse/issues/106707
WITH
    all_sales AS
    (
        SELECT
            d_year,
            i_brand_id,
            i_class_id,
            i_category_id,
            i_manufact_id,
            SUM(sales_cnt) AS sales_cnt,
            SUM(sales_amt) AS sales_amt
        FROM
        (
            SELECT
                d_year,
                i_brand_id,
                i_class_id,
                i_category_id,
                i_manufact_id,
                cs_quantity - COALESCE(cr_return_quantity, 0) AS sales_cnt,
                cs_ext_sales_price - COALESCE(cr_return_amount, CAST('0.0', 'Decimal(7, 2)')) AS sales_amt
            FROM catalog_sales
            INNER JOIN item ON i_item_sk = cs_item_sk
            INNER JOIN date_dim ON d_date_sk = cs_sold_date_sk
            LEFT JOIN catalog_returns ON (cs_order_number = cr_order_number) AND (cs_item_sk = cr_item_sk)
            WHERE (i_category = 'Books')
            UNION
            SELECT
                d_year,
                i_brand_id,
                i_class_id,
                i_category_id,
                i_manufact_id,
                ss_quantity - COALESCE(sr_return_quantity, 0) AS sales_cnt,
                ss_ext_sales_price - COALESCE(sr_return_amt, CAST('0.0', 'Decimal(7, 2)')) AS sales_amt
            FROM store_sales
            INNER JOIN item ON i_item_sk = ss_item_sk
            INNER JOIN date_dim ON d_date_sk = ss_sold_date_sk
            LEFT JOIN store_returns ON (ss_ticket_number = sr_ticket_number) AND (ss_item_sk = sr_item_sk)
            WHERE (i_category = 'Books')
            UNION
            SELECT
                d_year,
                i_brand_id,
                i_class_id,
                i_category_id,
                i_manufact_id,
                ws_quantity - COALESCE(wr_return_quantity, 0) AS sales_cnt,
                ws_ext_sales_price - COALESCE(wr_return_amt, CAST('0.0', 'Decimal(7, 2)')) AS sales_amt
            FROM web_sales
            INNER JOIN item ON i_item_sk = ws_item_sk
            INNER JOIN date_dim ON d_date_sk = ws_sold_date_sk
            LEFT JOIN web_returns ON (ws_order_number = wr_order_number) AND (ws_item_sk = wr_item_sk)
            WHERE (i_category = 'Books')
        ) AS sales_detail
        GROUP BY
            d_year,
            i_brand_id,
            i_class_id,
            i_category_id,
            i_manufact_id
    )
SELECT
    prev_yr.d_year AS prev_year,
    curr_yr.d_year AS year,
    curr_yr.i_brand_id,
    curr_yr.i_class_id,
    curr_yr.i_category_id,
    curr_yr.i_manufact_id,
    prev_yr.sales_cnt AS prev_yr_cnt,
    curr_yr.sales_cnt AS curr_yr_cnt,
    curr_yr.sales_cnt - prev_yr.sales_cnt AS sales_cnt_diff,
    curr_yr.sales_amt - prev_yr.sales_amt AS sales_amt_diff
FROM all_sales AS curr_yr, all_sales AS prev_yr
WHERE (curr_yr.i_brand_id = prev_yr.i_brand_id)
    AND (curr_yr.i_class_id = prev_yr.i_class_id)
    AND (curr_yr.i_category_id = prev_yr.i_category_id)
    AND (curr_yr.i_manufact_id = prev_yr.i_manufact_id)
    AND (curr_yr.d_year = 2002)
    AND (prev_yr.d_year = (2002 - 1))
    AND ((CAST(curr_yr.sales_cnt, 'DECIMAL(17, 2)') / CAST(prev_yr.sales_cnt, 'DECIMAL(17, 2)')) < 0.9)
ORDER BY
    sales_cnt_diff,
    sales_amt_diff
LIMIT 100;