Subqeries require mysql 4.1.
The manual offers some suggestions on rewriting subqueries as JOINs <http://dev.mysql.com/doc/mysql/en/Rewriting_subqueries.html>.
In your case, you want something like:
SELECT product FROM products p LEFT JOIN products_by_product_areas a ON p.product = a.product WHERE a.product IS NULL;
Michael
Anton Ivanov wrote:
Hi, I'm trying to figure out how to apply these from the manual, but to no avail. Is it possible that my version (4.0.18) does not implement these? I have two tables: products and products_by_product_area. Both have a field "product". I try
SELECT product from products WHERE NOT EXISTS (SELECT DISTINCT * from products_by_product_areas WHERE products_by_product_areas.product = products.product);
Both of these queries run fine on their own. It looks to me that I'm simply adapting from the manual, but all I get is
ERROR 1064: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near 'EXISTS (SELECT DISTINCT * from products_by_product_areas WHERE
OK, so I grab the example verbatim from the manual: SELECT DISTINCT store_type FROM Stores WHERE EXISTS (SELECT * FROM Cities_Stores WHERE Cities_Stores.store_type = Stores.store_type);
And run it. Same error. Never mind that I don't have these tables: the query does not compile. What is going on?
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