Dan Sugalski <[EMAIL PROTECTED]> writes:
> I'd figure, though, that since the parameters are being passed 
> into PQexecParams basically to get them out of band so I don't have 
> to deal with escaping, quoting, and suchlike things, that the 
> optimizer would look at things *after* the substitution was done.

You'd figure wrong :-(.  The present mechanism for the LIKE-to-index
optimization requires the LIKE pattern to be a pure, unadulterated constant.

                        regards, tom lane

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