Tanktalus:

I'm with you, actually. I was just abbreviating and trying to show the protocol for solving my problem. My $executable is actually constructed with a loop from an array.

Thanks for your time!

ikegami:

That still doesn't explain why you added quote_identifier. It doesn't seem to have any effect on the question I was asking. Does it, for example, make a one-off query more efficient?

And thank you for your time!