diff options
Diffstat (limited to 'sql/sql_explain.h')
| -rw-r--r-- | sql/sql_explain.h | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/sql/sql_explain.h b/sql/sql_explain.h index 61720ca8d76..f92a57627d5 100644 --- a/sql/sql_explain.h +++ b/sql/sql_explain.h @@ -84,9 +84,10 @@ class Explain_query; class Explain_node : public Sql_alloc { public: - Explain_node(MEM_ROOT *root) : - connection_type(EXPLAIN_NODE_OTHER), - children(root) + Explain_node(MEM_ROOT *root) : + cache_tracker(NULL), + connection_type(EXPLAIN_NODE_OTHER), + children(root) {} /* A type specifying what kind of node this is */ enum explain_node_type @@ -106,10 +107,14 @@ public: EXPLAIN_NODE_NON_MERGED_SJ /* aka JTBM semi-join */ }; - virtual enum explain_node_type get_type()= 0; virtual int get_select_id()= 0; + /** + expression cache statistics + */ + Expression_cache_tracker* cache_tracker; + /* How this node is connected to its parent. (NOTE: EXPLAIN_NODE_NON_MERGED_SJ is set very late currently) @@ -135,6 +140,7 @@ public: uint8 explain_flags, bool is_analyze); void print_explain_json_for_children(Explain_query *query, Json_writer *writer, bool is_analyze); + bool print_explain_json_cache(Json_writer *writer, bool is_analyze); virtual ~Explain_node(){} }; @@ -171,7 +177,8 @@ public: void print_explain_json_interns(Explain_query *query, Json_writer *writer, bool is_analyze, - Filesort_tracker *first_table_sort); + Filesort_tracker *first_table_sort, + bool first_table_sort_used); /* A flat array of Explain structs for tables. */ Explain_table_access** join_tabs; @@ -203,7 +210,8 @@ public: Explain_basic_join(root), message(NULL), using_temporary(false), using_filesort(false), - time_tracker(is_analyze) + time_tracker(is_analyze), + ops_tracker(is_analyze) {} /* @@ -220,7 +228,7 @@ public: members have no info */ const char *message; - + /* Expensive constant condition */ Item *exec_const_cond; @@ -704,7 +712,9 @@ public: uint select_id, const char *select_type, bool using_temporary, bool using_filesort); void print_explain_json(Explain_query *query, Json_writer *writer, - bool is_analyze, Filesort_tracker *fs_tracker); + bool is_analyze, + Filesort_tracker *fs_tracker, + bool first_table_sort_used); private: void append_tag_name(String *str, enum explain_extra_tag tag); @@ -720,6 +730,8 @@ private: This is similar to Explain_table_access, except that it is more restrictive. Also, it can have UPDATE operation options, but currently there aren't any. + + Explain_delete inherits from this. */ class Explain_update : public Explain_node |