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MDEV-7648: Extra data in ANALYZE FORMAT=JSON $stmt

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Show total execution time (r_total_time_ms) for various parts of the
query:
1. time spent in SELECTs
2. time spent reading rows from storage engines

#2 currently gets the data from P_S.
This commit is contained in:
Sergei Petrunia
2015-03-07 22:47:28 +03:00
parent 2288b84df4
commit 1626e0d3d4
12 changed files with 218 additions and 3 deletions
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5
sql/sql_select.h
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@ -252,6 +252,7 @@ typedef struct st_join_table {
enum explain_extra_tag info;
Table_access_tracker *tracker;
Table_access_tracker *jbuf_tracker;
/*
Bitmap of TAB_INFO_* bits that encodes special line for EXPLAIN 'Extra'
@ -1260,6 +1261,8 @@ public:
OPTIMIZATION_DONE=2};
bool optimized; ///< flag to avoid double optimization in EXPLAIN
bool initialized; ///< flag to avoid double init_execution calls
Exec_time_tracker *tracker;
enum { QEP_NOT_PRESENT_YET, QEP_AVAILABLE, QEP_DELETED} have_query_plan;
@ -1354,6 +1357,8 @@ public:
no_rows_in_result_called= 0;
positions= best_positions= 0;
tracker= NULL;
all_fields= fields_arg;
if (&fields_list != &fields_arg) /* Avoid valgrind-warning */
fields_list= fields_arg;