diff options
Diffstat (limited to 'sql/sql_explain.h')
| -rw-r--r-- | sql/sql_explain.h | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/sql/sql_explain.h b/sql/sql_explain.h index 0e8569aabe5..a0f137bb561 100644 --- a/sql/sql_explain.h +++ b/sql/sql_explain.h @@ -493,7 +493,7 @@ public: bool is_analyze); /* Send tabular EXPLAIN to the client */ - int send_explain(THD *thd); + int send_explain(THD *thd, bool extended); /* Return tabular EXPLAIN output as a text string */ bool print_explain_str(THD *thd, String *out_str, bool is_analyze); @@ -747,7 +747,7 @@ public: class Explain_table_access : public Sql_alloc { public: - Explain_table_access(MEM_ROOT *root) : + Explain_table_access(MEM_ROOT *root, bool timed) : derived_select_number(0), non_merged_sjm_number(0), extra_tags(root), @@ -760,6 +760,7 @@ public: pushed_index_cond(NULL), sjm_nest(NULL), pre_join_sort(NULL), + jbuf_unpack_tracker(timed), rowid_filter(NULL) {} ~Explain_table_access() { delete sjm_nest; } @@ -867,8 +868,22 @@ public: Exec_time_tracker op_tracker; Gap_time_tracker extra_time_tracker; + /* When using join buffer: Track the reads from join buffer */ Table_access_tracker jbuf_tracker; - + + /* When using join buffer: time spent unpacking rows from the join buffer */ + Time_and_counter_tracker jbuf_unpack_tracker; + + /* + When using join buffer: time spent after unpacking rows from the join + buffer. This will capture the time spent checking the Join Condition: + the condition that depends on this table and preceding tables. + */ + Gap_time_tracker jbuf_extra_time_tracker; + + /* When using join buffer: Track the number of incoming record combinations */ + Counter_tracker jbuf_loops_tracker; + Explain_rowid_filter *rowid_filter; int print_explain(select_result_sink *output, uint8 explain_flags, |