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Re: Store procedure select fails
Posted by: Peter Brawley
Date: April 12, 2018 09:57AM

Why not just use GUIDs?

If there's a imperative reason you must write a custom sproc for this, given the primitive language and absence of debugging toools with MySQL sprocs, they're a pain. The only debugging method I know is the brute force method of stubs & drivers we learned long ago in school, before fancy debuggers existed. Stub out the controlling values in user variables and track what's happening.

I do see a coding error: x like y returns true only where x exactly equals y, but if you're using the like operator you presumably want x like concat(y,'%'), or x like concat('%',y,'%').

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