check if a table exsist in where

Posted by Luca Romagnoli on Stack Overflow See other posts from Stack Overflow or by Luca Romagnoli
Published on 2010-06-02T14:16:43Z Indexed on 2010/06/02 14:24 UTC
Read the original article Hit count: 179

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mysql

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tables

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exists

This query generates an error because table2 doesn't exist:

Select * FROM table WHERE table2.id IS NOT NULL

Is there anything like this for check the table2 before apply the check on the id?

Select * FROM table WHERE (EXIST(table2) AND table2.id IS NOT NULL) or not EXIST(table2)

Thanks

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