مطالب مرتبط با «sql joins practice» در Stack Exchange | نویسنده: رضا رضوی
SQL Joins : How can i get latest record from 2nd table (one to many relationship)
I have two tables 1.Product table having columns prod_code alert_limit prod_description 2.Daily_data table having columns prod_code used_today date stock_left How should i join these two tables to get recent records of each product on the basis of date ? I have tried SELECT p.*, d.* FROM product p JOIN daily_data d ON (p.product_code = d.prod_code) LEFT OUTER JOIN daily_data d2 ON (p.product_code = d.prod_code AND (d.date < d2.date OR d.date = d2.date AND d.prod_code < d2.prod_code)) WHERE d2.prod_code IS NULL; but the above is giving me one recent row of the last product added Let's block ads! بخوانید...
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