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I think it's impressive, but maybe not for the same reasons as the OP : that means that keyword lookup accounted for at least 20% of total SQL parsing time. That's a surprise to me !

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Note it's the "raw" parsing time. If you include the semantic parse-analysis phase, i.e. looking up table names etc, it's a much smaller portion.

This is basically what I was thinking -- that a relatively minor change to the parsing process could yield such significant results.

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