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union all in a prepared statement?
Posted by: John Franco
Date: June 02, 2009 05:33PM

Hello,

I would like to have a prepared statement like,

( select t1.c1 from t1 where t1.c2 >= ? limit ? )
union all ( select t1.c1 from t1 limit ? )
limit ?, 1
into @v1

That is, I want to choose a starting point in table t1, and then find the nth value greater than or equal to the starting point, wrapping around to the beginning if necessary. I want to save the value found into a variable.

I'm using a prepared statement because that's the only way I've been able to use variables for limit clauses.

The problem is, although the syntax above seems correct when I substitute values for the question marks and run it in the query browser, MySQL claims the syntax is invalid when I try to run it in a prepared statement:

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 'into @v1' at line 1

Anyone have suggestions on what to do about this? Should I open a bug?

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union all in a prepared statement?
June 02, 2009 05:33PM


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