MDEV-6430: It is impossible to see if "filesort with small limit" optimization was used
- Add a Sort_priority_queue_sorts status variable.
This commit is contained in:
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16779f6069
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c16c3b9e47
@ -755,6 +755,7 @@ Variable_name Value
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# Status of "equivalent" SELECT query execution:
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# Status of "equivalent" SELECT query execution:
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Variable_name Value
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Variable_name Value
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Handler_read_rnd_next 11
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Handler_read_rnd_next 11
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Sort_priority_queue_sorts 1
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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@ -1231,6 +1232,7 @@ Variable_name Value
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# Status of "equivalent" SELECT query execution:
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# Status of "equivalent" SELECT query execution:
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Variable_name Value
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Variable_name Value
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Sort_priority_queue_sorts 1
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Sort_rows 5
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Sort_rows 5
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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@ -1275,6 +1277,7 @@ Variable_name Value
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# Status of "equivalent" SELECT query execution:
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# Status of "equivalent" SELECT query execution:
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Variable_name Value
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Variable_name Value
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Sort_priority_queue_sorts 1
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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@ -1361,6 +1364,7 @@ Variable_name Value
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# Status of "equivalent" SELECT query execution:
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# Status of "equivalent" SELECT query execution:
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Variable_name Value
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Variable_name Value
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Sort_priority_queue_sorts 1
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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@ -1407,6 +1411,7 @@ Variable_name Value
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Variable_name Value
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Variable_name Value
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Handler_read_rnd 1
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Handler_read_rnd 1
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Sort_priority_queue_sorts 1
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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@ -1540,6 +1545,7 @@ Variable_name Value
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# Status of "equivalent" SELECT query execution:
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# Status of "equivalent" SELECT query execution:
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Variable_name Value
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Variable_name Value
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Sort_priority_queue_sorts 1
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Sort_rows 5
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Sort_rows 5
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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@ -1668,6 +1674,7 @@ Variable_name Value
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# Status of "equivalent" SELECT query execution:
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# Status of "equivalent" SELECT query execution:
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Variable_name Value
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Variable_name Value
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Sort_priority_queue_sorts 1
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Sort_rows 5
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Sort_rows 5
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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@ -1675,6 +1682,7 @@ Variable_name Value
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Handler_read_rnd 5
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Handler_read_rnd 5
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Handler_update 5
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Handler_update 5
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Sort_priority_queue_sorts 1
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Sort_rows 5
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Sort_rows 5
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Sort_scan 1
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Sort_scan 1
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@ -1712,6 +1720,7 @@ Variable_name Value
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# Status of "equivalent" SELECT query execution:
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# Status of "equivalent" SELECT query execution:
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Variable_name Value
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Variable_name Value
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Sort_priority_queue_sorts 1
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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@ -1719,6 +1728,7 @@ Variable_name Value
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Handler_read_rnd 1
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Handler_read_rnd 1
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Handler_update 1
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Handler_update 1
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Sort_priority_queue_sorts 1
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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@ -1799,12 +1809,14 @@ Variable_name Value
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# Status of "equivalent" SELECT query execution:
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# Status of "equivalent" SELECT query execution:
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Variable_name Value
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Variable_name Value
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Sort_priority_queue_sorts 1
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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Variable_name Value
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Variable_name Value
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Handler_read_rnd 1
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Handler_read_rnd 1
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Sort_priority_queue_sorts 1
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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@ -1844,12 +1856,14 @@ Variable_name Value
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Variable_name Value
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Variable_name Value
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Handler_read_rnd 1
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Handler_read_rnd 1
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Sort_priority_queue_sorts 1
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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Variable_name Value
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Variable_name Value
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Handler_read_rnd 1
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Handler_read_rnd 1
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Sort_priority_queue_sorts 1
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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@ -1977,6 +1991,7 @@ Variable_name Value
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# Status of "equivalent" SELECT query execution:
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# Status of "equivalent" SELECT query execution:
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Variable_name Value
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Variable_name Value
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Sort_priority_queue_sorts 1
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Sort_rows 5
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Sort_rows 5
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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@ -1984,6 +1999,7 @@ Variable_name Value
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Handler_read_rnd 5
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Handler_read_rnd 5
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Handler_read_rnd_next 27
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Handler_read_rnd_next 27
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Handler_update 4
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Handler_update 4
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Sort_priority_queue_sorts 1
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Sort_rows 5
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Sort_rows 5
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Sort_scan 1
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Sort_scan 1
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@ -2067,6 +2083,7 @@ Variable_name Value
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Variable_name Value
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Variable_name Value
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Handler_read_key 1
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Handler_read_key 1
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Handler_read_next 2
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Handler_read_next 2
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Sort_priority_queue_sorts 1
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Sort_range 1
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Sort_range 1
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Sort_rows 2
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Sort_rows 2
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# Status of testing query execution:
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# Status of testing query execution:
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@ -2075,6 +2092,7 @@ Handler_read_key 1
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Handler_read_next 2
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Handler_read_next 2
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Handler_read_rnd 2
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Handler_read_rnd 2
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Handler_update 2
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Handler_update 2
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Sort_priority_queue_sorts 1
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Sort_range 1
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Sort_range 1
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Sort_rows 2
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Sort_rows 2
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@ -2105,6 +2123,7 @@ Variable_name Value
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Variable_name Value
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Variable_name Value
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Handler_read_key 1
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Handler_read_key 1
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Handler_read_next 2
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Handler_read_next 2
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Sort_priority_queue_sorts 1
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Sort_range 1
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Sort_range 1
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Sort_rows 2
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Sort_rows 2
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# Status of testing query execution:
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# Status of testing query execution:
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@ -2625,6 +2644,7 @@ Variable_name Value
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Variable_name Value
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Variable_name Value
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Handler_read_key 3
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Handler_read_key 3
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Handler_read_rnd_next 10
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Handler_read_rnd_next 10
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Sort_priority_queue_sorts 1
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Sort_rows 3
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Sort_rows 3
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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@ -2632,6 +2652,7 @@ Variable_name Value
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Handler_read_key 3
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Handler_read_key 3
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Handler_read_rnd_next 8
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Handler_read_rnd_next 8
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Handler_update 1
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Handler_update 1
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Sort_priority_queue_sorts 1
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Sort_rows 3
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Sort_rows 3
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Sort_scan 1
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Sort_scan 1
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@ -2674,12 +2695,14 @@ Variable_name Value
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Variable_name Value
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Variable_name Value
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Handler_read_key 3
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Handler_read_key 3
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Handler_read_rnd_next 10
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Handler_read_rnd_next 10
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Sort_priority_queue_sorts 1
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Sort_rows 3
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Sort_rows 3
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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Variable_name Value
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Variable_name Value
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Handler_read_key 3
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Handler_read_key 3
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Handler_read_rnd_next 10
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Handler_read_rnd_next 10
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Sort_priority_queue_sorts 1
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Sort_rows 3
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Sort_rows 3
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Sort_scan 1
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Sort_scan 1
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@ -2724,12 +2747,14 @@ Variable_name Value
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Variable_name Value
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Variable_name Value
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Handler_read_key 3
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Handler_read_key 3
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Handler_read_rnd_next 10
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Handler_read_rnd_next 10
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Sort_priority_queue_sorts 1
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Sort_rows 3
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Sort_rows 3
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Sort_scan 1
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Sort_scan 1
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# Status of testing query execution:
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# Status of testing query execution:
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Variable_name Value
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Variable_name Value
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Handler_read_key 3
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Handler_read_key 3
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Handler_read_rnd_next 10
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Handler_read_rnd_next 10
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Sort_priority_queue_sorts 1
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Sort_rows 3
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Sort_rows 3
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Sort_scan 1
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Sort_scan 1
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@ -45,6 +45,7 @@ FLUSH STATUS;
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 0
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Sort_range 0
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Sort_range 0
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Sort_rows 0
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Sort_rows 0
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Sort_scan 0
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Sort_scan 0
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@ -153,6 +154,7 @@ f0 f1 f2
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 1
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Sort_range 0
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Sort_range 0
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Sort_rows 100
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Sort_rows 100
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Sort_scan 1
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Sort_scan 1
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@ -18,6 +18,7 @@ NULL 15
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 0
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Sort_range 0
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Sort_range 0
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Sort_rows 0
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Sort_rows 0
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Sort_scan 0
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Sort_scan 0
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@ -36,6 +37,7 @@ DELETE FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5;
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 0
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Sort_range 0
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Sort_range 0
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Sort_rows 0
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Sort_rows 0
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Sort_scan 0
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Sort_scan 0
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@ -71,6 +73,7 @@ NULL 15
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 1
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Sort_range 0
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Sort_range 0
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Sort_rows 5
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Sort_rows 5
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Sort_scan 1
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Sort_scan 1
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@ -89,6 +92,7 @@ DELETE FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5;
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 0
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Sort_range 0
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Sort_range 0
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Sort_rows 8
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Sort_rows 8
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Sort_scan 1
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Sort_scan 1
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@ -121,6 +125,7 @@ a b c d
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 1
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Sort_range 0
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Sort_range 0
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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@ -139,6 +144,7 @@ DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5;
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 0
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Sort_range 0
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Sort_range 0
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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@ -175,6 +181,7 @@ a b c d
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 0
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Sort_range 0
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Sort_range 0
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Sort_rows 0
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Sort_rows 0
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Sort_scan 0
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Sort_scan 0
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@ -193,6 +200,7 @@ DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5;
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 0
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Sort_range 0
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Sort_range 0
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Sort_rows 0
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Sort_rows 0
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Sort_scan 0
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Sort_scan 0
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@ -223,6 +231,7 @@ a b c d
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 1
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Sort_range 0
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Sort_range 0
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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@ -241,6 +250,7 @@ DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5;
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 0
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Sort_range 0
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Sort_range 0
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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@ -269,6 +279,7 @@ a b c d
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 1
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Sort_range 0
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Sort_range 0
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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@ -287,6 +298,7 @@ DELETE FROM t2 WHERE b = 10 ORDER BY a, c LIMIT 5;
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 0
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Sort_range 0
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Sort_range 0
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Sort_rows 1
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Sort_rows 1
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Sort_scan 1
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Sort_scan 1
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@ -318,6 +330,7 @@ NULL 13 13
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SHOW SESSION STATUS LIKE 'Sort%';
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Variable_name Value
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Sort_merge_passes 0
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Sort_merge_passes 0
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Sort_priority_queue_sorts 0
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Sort_range 1
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Sort_range 1
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Sort_rows 4
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Sort_rows 4
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -341,6 +354,7 @@ DELETE FROM t2 WHERE key1 < 13 or key2 < 14 ORDER BY key1;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 1
|
Sort_range 1
|
||||||
Sort_rows 4
|
Sort_rows 4
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -378,6 +392,7 @@ NULL 14
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -396,6 +411,7 @@ DELETE FROM t2 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -431,6 +447,7 @@ a b c
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 1
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 5
|
Sort_rows 5
|
||||||
Sort_scan 1
|
Sort_scan 1
|
||||||
@ -449,6 +466,7 @@ DELETE FROM t2 ORDER BY a, b DESC LIMIT 5;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 16
|
Sort_rows 16
|
||||||
Sort_scan 1
|
Sort_scan 1
|
||||||
@ -493,6 +511,7 @@ a b c
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -517,6 +536,7 @@ a b c
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -535,6 +555,7 @@ DELETE FROM t2 ORDER BY a DESC, b DESC LIMIT 5;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -571,6 +592,7 @@ NULL 15
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -589,6 +611,7 @@ UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -629,6 +652,7 @@ NULL 15
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 1
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 5
|
Sort_rows 5
|
||||||
Sort_scan 1
|
Sort_scan 1
|
||||||
@ -647,6 +671,7 @@ UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i LIMIT 5;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 1
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 5
|
Sort_rows 5
|
||||||
Sort_scan 1
|
Sort_scan 1
|
||||||
@ -684,6 +709,7 @@ a b c d
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 1
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 1
|
Sort_rows 1
|
||||||
Sort_scan 1
|
Sort_scan 1
|
||||||
@ -702,6 +728,7 @@ UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 1
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 1
|
Sort_rows 1
|
||||||
Sort_scan 1
|
Sort_scan 1
|
||||||
@ -738,6 +765,7 @@ a b c d
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -756,6 +784,7 @@ UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -786,6 +815,7 @@ a b c d
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 1
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 1
|
Sort_rows 1
|
||||||
Sort_scan 1
|
Sort_scan 1
|
||||||
@ -804,6 +834,7 @@ UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 1
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 1
|
Sort_rows 1
|
||||||
Sort_scan 1
|
Sort_scan 1
|
||||||
@ -833,6 +864,7 @@ a b c d
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 1
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 1
|
Sort_rows 1
|
||||||
Sort_scan 1
|
Sort_scan 1
|
||||||
@ -851,6 +883,7 @@ UPDATE t2 SET d = 10 WHERE b = 10 ORDER BY a, c LIMIT 5;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 1
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 1
|
Sort_rows 1
|
||||||
Sort_scan 1
|
Sort_scan 1
|
||||||
@ -883,6 +916,7 @@ NULL 13 13
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 1
|
Sort_range 1
|
||||||
Sort_rows 4
|
Sort_rows 4
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -906,6 +940,7 @@ UPDATE t2 SET i = 123 WHERE key1 < 13 or key2 < 14 ORDER BY key1;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 1
|
Sort_range 1
|
||||||
Sort_rows 4
|
Sort_rows 4
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -947,6 +982,7 @@ NULL 14
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -965,6 +1001,7 @@ UPDATE t2 SET a = 10 WHERE i > 10 AND i <= 18 ORDER BY i DESC LIMIT 5;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -1005,6 +1042,7 @@ a b c
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 1
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 5
|
Sort_rows 5
|
||||||
Sort_scan 1
|
Sort_scan 1
|
||||||
@ -1023,6 +1061,7 @@ UPDATE t2 SET c = 10 ORDER BY a, b DESC LIMIT 5;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 1
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 5
|
Sort_rows 5
|
||||||
Sort_scan 1
|
Sort_scan 1
|
||||||
@ -1061,6 +1100,7 @@ a b c
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -1085,6 +1125,7 @@ a b c
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
@ -1103,6 +1144,7 @@ UPDATE t2 SET c = 10 ORDER BY a DESC, b DESC LIMIT 5;
|
|||||||
SHOW SESSION STATUS LIKE 'Sort%';
|
SHOW SESSION STATUS LIKE 'Sort%';
|
||||||
Variable_name Value
|
Variable_name Value
|
||||||
Sort_merge_passes 0
|
Sort_merge_passes 0
|
||||||
|
Sort_priority_queue_sorts 0
|
||||||
Sort_range 0
|
Sort_range 0
|
||||||
Sort_rows 0
|
Sort_rows 0
|
||||||
Sort_scan 0
|
Sort_scan 0
|
||||||
|
@ -226,6 +226,7 @@ ha_rows filesort(THD *thd, TABLE *table, SORT_FIELD *sortorder, uint s_length,
|
|||||||
{
|
{
|
||||||
DBUG_PRINT("info", ("filesort PQ is applicable"));
|
DBUG_PRINT("info", ("filesort PQ is applicable"));
|
||||||
thd->query_plan_flags|= QPLAN_FILESORT_PRIORITY_QUEUE;
|
thd->query_plan_flags|= QPLAN_FILESORT_PRIORITY_QUEUE;
|
||||||
|
status_var_increment(thd->status_var.filesort_pq_sorts_);
|
||||||
const size_t compare_length= param.sort_length;
|
const size_t compare_length= param.sort_length;
|
||||||
if (pq.init(param.max_rows,
|
if (pq.init(param.max_rows,
|
||||||
true, // max_at_top
|
true, // max_at_top
|
||||||
|
@ -7893,6 +7893,7 @@ SHOW_VAR status_vars[]= {
|
|||||||
{"Sort_range", (char*) offsetof(STATUS_VAR, filesort_range_count_), SHOW_LONG_STATUS},
|
{"Sort_range", (char*) offsetof(STATUS_VAR, filesort_range_count_), SHOW_LONG_STATUS},
|
||||||
{"Sort_rows", (char*) offsetof(STATUS_VAR, filesort_rows_), SHOW_LONG_STATUS},
|
{"Sort_rows", (char*) offsetof(STATUS_VAR, filesort_rows_), SHOW_LONG_STATUS},
|
||||||
{"Sort_scan", (char*) offsetof(STATUS_VAR, filesort_scan_count_), SHOW_LONG_STATUS},
|
{"Sort_scan", (char*) offsetof(STATUS_VAR, filesort_scan_count_), SHOW_LONG_STATUS},
|
||||||
|
{"Sort_priority_queue_sorts",(char*) offsetof(STATUS_VAR, filesort_pq_sorts_), SHOW_LONG_STATUS},
|
||||||
#ifdef HAVE_OPENSSL
|
#ifdef HAVE_OPENSSL
|
||||||
#ifndef EMBEDDED_LIBRARY
|
#ifndef EMBEDDED_LIBRARY
|
||||||
{"Ssl_accept_renegotiates", (char*) &show_ssl_ctx_sess_accept_renegotiate, SHOW_SIMPLE_FUNC},
|
{"Ssl_accept_renegotiates", (char*) &show_ssl_ctx_sess_accept_renegotiate, SHOW_SIMPLE_FUNC},
|
||||||
|
@ -704,6 +704,7 @@ typedef struct system_status_var
|
|||||||
ulong filesort_range_count_;
|
ulong filesort_range_count_;
|
||||||
ulong filesort_rows_;
|
ulong filesort_rows_;
|
||||||
ulong filesort_scan_count_;
|
ulong filesort_scan_count_;
|
||||||
|
ulong filesort_pq_sorts_;
|
||||||
/* Prepared statements and binary protocol */
|
/* Prepared statements and binary protocol */
|
||||||
ulong com_stmt_prepare;
|
ulong com_stmt_prepare;
|
||||||
ulong com_stmt_reprepare;
|
ulong com_stmt_reprepare;
|
||||||
|
Loading…
x
Reference in New Issue
Block a user