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percona-toolkit/t/pt-query-advisor/samples/sub-001-01.txt
2011-06-24 16:02:05 -06:00

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# Query ID 0xD6E9D91F645455DB at byte 0
# CRIT SUB.001 IN() and NOT IN() subqueries are poorly optimized.
# matches near: i in (select * from j)
select t from w where i=1 or i in (select * from j)
# Profile
# Query ID NOTE WARN CRIT Item
# ================== ==== ==== ==== ==========================================
# 0xD6E9D91F645455DB 0 0 1 select t from w where i=? or i in (select * from j)