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Selecting all from a row if variable is undefined?


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Say I have an INT row that contains numbers 0 through 11.  If the user does not define a number, I want it to pull from the row, no matter what it contains.  Sorry if I am explaining this unclearly.  Anyways, would I just do it like this:


SELECT * FROM table WHERE $variable LIKE '%'


Or is there some other way of doing it?

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