nexit Posted April 10, 2015 Share Posted April 10, 2015 I have a question about how I would structure a query. I have 2 tables. Store store_id -- primary key zip_code Merchandise item_id -- primary key item_name description cost storeID -- foreign key that references the store_id from the store. I am using InnoDB. I want the user to be able to input 1-5 choices that are 1 word apiece and it would cross reference the decription and tell me the store that has them both. For instance, choice 1 = clock, choice 2 = paper, and choice 3 = food. It would query a result that would give me the stores that have items that match the description of them all. For instance, it would return Wal - Mart based on this query because it would be the only store that had an item to match each description. Any help is much appreciated. Thanks! Quote Link to comment https://forums.phpfreaks.com/topic/295388-query-help-joining-tables/ Share on other sites More sharing options...
Barand Posted April 10, 2015 Share Posted April 10, 2015 try SELECT DISTINCT s.store_id , s.zip_code FROM store s INNER JOIN merchandise m1 ON s.store_id = m1.storeID AND m1.description = 'clock' INNER JOIN merchandise m2 ON s.store_id = m2.storeID AND m2.description = 'paper' INNER JOIN merchandise m3 ON s.store_id = m3.storeID AND m3.description = 'food' Quote Link to comment https://forums.phpfreaks.com/topic/295388-query-help-joining-tables/#findComment-1508660 Share on other sites More sharing options...
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