diff options
Diffstat (limited to 'sql/sql_explain.h')
| -rw-r--r-- | sql/sql_explain.h | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/sql/sql_explain.h b/sql/sql_explain.h index dd2b5783b41..427553c1088 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_stat(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_stat* cache_stat; + /* 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); + void print_explain_json_cache(Json_writer *writer, bool is_analyze); virtual ~Explain_node(){} }; @@ -221,7 +227,7 @@ public: members have no info */ const char *message; - + /* Expensive constant condition */ Item *exec_const_cond; |