WITH
`Retailers` AS (
SELECT `SALES_REGION`.`SALES_REGION_CODE` AS `Sales_region_code`, `RETAILER_SITE`.`RETAILER_SITE_CODE` AS `Retailer_site_code`
FROM `gosalesrt_1021`.`retailer_contact` `RETAILER_CONTACT`
INNER JOIN `gosaleshr_1021`.`gender_lookup` `GENDER_LOOKUP` ON `RETAILER_CONTACT`.`GENDER_CODE` = `GENDER_LOOKUP`.`GENDER_CODE`
INNER JOIN `gosalesrt_1021`.`retailer_site_mb` `RETAILER_SITE_MB` ON `RETAILER_CONTACT`.`RETAILER_SITE_CODE` = `RETAILER_SITE_MB`.`RETAILER_SITE_CODE`
INNER JOIN `gosalesrt_1021`.`retailer_site` `RETAILER_SITE` ON `RETAILER_SITE`.`RETAILER_SITE_CODE` = `RETAILER_CONTACT`.`RETAILER_SITE_CODE`
INNER JOIN `gosales_1021`.`country` `COUNTRY` ON `RETAILER_SITE`.`RTL_COUNTRY_CODE` = `COUNTRY`.`COUNTRY_CODE`
INNER JOIN `gosalesrt_1021`.`retailer` `RETAILER` ON `RETAILER`.`RETAILER_CODE` = `RETAILER_SITE_MB`.`RETAILER_CODE`
INNER JOIN `gosales_1021`.`sales_region` `SALES_REGION` ON `COUNTRY`.`SALES_REGION_CODE` = `SALES_REGION`.`SALES_REGION_CODE`
),

`Sales` AS (
SELECT (EXTRACT(YEAR FROM `ORDER_HEADER`.`ORDER_DATE`) * 10000 + EXTRACT(MONTH
FROM `ORDER_HEADER`.`ORDER_DATE`) * 100) + EXTRACT(DAY FROM `ORDER_HEADER`.`ORDER_DATE`) AS `Day_key_order_date`,
`ORDER_HEADER`.`RETAILER_SITE_CODE` AS `Retailer_site_code`, `ORDER_HEADER`.`ORDER_DATE` AS `Order_date`,
`ORDER_DETAILS`.`QUANTITY` AS `Quantity`, `ORDER_DETAILS`.`UNIT_COST` AS `Unit_cost`, `ORDER_DETAILS`.`UNIT_SALE_PRICE` AS `Unit_sale_price`,
`ORDER_DETAILS`.`QUANTITY` * `ORDER_DETAILS`.`UNIT_SALE_PRICE` AS `Revenue`,
`ORDER_DETAILS`.`QUANTITY` * `ORDER_DETAILS`.`UNIT_SALE_PRICE` - `ORDER_DETAILS`.`QUANTITY` * `ORDER_DETAILS`.`UNIT_COST` AS `Gross_profit`
FROM `gosales_1021`.`order_header` `ORDER_HEADER`
INNER JOIN `gosales_1021`.`order_details` `ORDER_DETAILS` ON `ORDER_HEADER`.`ORDER_NUMBER` = `ORDER_DETAILS`.`ORDER_NUMBER`
)

SELECT `TIME_DIMENSION`.`CURRENT_YEAR`, `TIME_DIMENSION`.`QUARTER_KEY`, `Sales`.`Gross_profit`, `Sales`.`Revenue`
FROM `Retailers`
INNER JOIN `Sales` ON `Retailers`.`Retailer_site_code` = `Sales`.`Retailer_site_code`
INNER JOIN `gosales_1021`.`time_dimension` `TIME_DIMENSION` ON `Sales`.`Day_key_order_date` = `TIME_DIMENSION`.`DAY_KEY`
WHERE MOD(`TIME_DIMENSION`.`MONTH_KEY`, 100) <> 0 AND `Retailers`.`Sales_region_code` = 710

Testing above sql statement, it takes 18 minutes in my environment against 10.3.15. But when testing against 10.3.18, it takes a second.

I have attached the 7zip compressed file for ddl