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MDEV-406: ANALYZE $stmt

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- Support tracking for UNIONs, temporary-table based ORDER BYs,
  and both.
This commit is contained in:
Sergei Petrunia
2014-06-03 17:59:01 +04:00
parent 0925ab9d88
commit 5621aa3230
6 changed files with 79 additions and 17 deletions
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2
sql/sql_select.h
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@ -251,7 +251,7 @@ typedef struct st_join_table {
/* Special content for EXPLAIN 'Extra' column or NULL if none */
enum explain_extra_tag info;
Explain_table_access *explain;
Table_access_tracker *tracker;
/*
Bitmap of TAB_INFO_* bits that encodes special line for EXPLAIN 'Extra'
column, or 0 if there is no info.