Eek! While I suspect that would be faster, it's also is likely to involve a huge amount of backtracking if you have many IDs. Further, if the IDs are similar, this will decrease the performance even more. A straight hash lookup is going to be faster.

Of course, showing people how to dynamically build regexes (even simple ones) is always a nice trick :)

Cheers,
Ovid

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In reply to Re: Re: need more efficient way to write this query script by Ovid
in thread need more efficient way to write this query script by Anonymous Monk

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