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Re: RFC - query cache insert


i executed some tests with
set profiling=1, execute query, set profiling=0;

with the explain extended, and explain

without extended it take ~0.0014s  (in my query test, a union query with
two queries with two tables and a single join)
with extended it take ~0.0019s (increase 0.0005s, 35% of overhead for

maybe 0.5ms  isn't a bad thing on some queries
i will check more about the query rewrite of explain extended, but i think
it's not a big problem on some workloads