Perform mysqldumpslow–h to view help information. Main introduction Two parameters-S and-t
-S This is a sort parameter, optional:
Al: Average lockout time
AR: Average number of returned records
At: Average query time
C: Count
L: Lockout time
R: Return record
T: Query time
-T n Display header N Records
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You typically need to see the log information for a time period:
awk '/# time:2017-10-30t20/,/# time:2017-10-31t03/' query-slow.log_42_20171031 >/tmp/a_log
awk '/# time: ' 110223 '/,/# time: ' 110224 '/' slow.log take out a day's data
awk '/# time: ' 110303 ' 1 '/,/# time: ' 110303 ' 2 '/' Slow.log take out 3rd points to 2 point data
awk '/# time: ' 110303 ' 1 '/,/# time: ' 110303 ' a '/' slow.log can take out all data after 1 points
awk '/# time: ' 140701 '/,/# time: ' 140703 '/' Slow.log
awk '/# time: ' 140703 ' 9 '/,/# time: ' 110303 ' a '/'
MySQL slow log intercept time period