diff options
Diffstat (limited to 'sql/sql_select.h')
| -rw-r--r-- | sql/sql_select.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sql/sql_select.h b/sql/sql_select.h index 0b9aa3576c7..e44d416380e 100644 --- a/sql/sql_select.h +++ b/sql/sql_select.h @@ -61,6 +61,8 @@ class store_key; typedef struct st_table_ref { bool key_err; + /** True if something was read into buffer in join_read_key. */ + bool has_record; uint key_parts; ///< num of ... uint key_length; ///< length of key_buff int key; ///< key no @@ -88,6 +90,11 @@ typedef struct st_table_ref table_map depend_map; ///< Table depends on these tables. /* null byte position in the key_buf. Used for REF_OR_NULL optimization */ uchar *null_ref_key; + /* + The number of times the record associated with this key was used + in the join. + */ + ha_rows use_count; } TABLE_REF; @@ -515,6 +522,7 @@ public: } bool rollup_init(); + bool rollup_process_const_fields(); bool rollup_make_fields(List<Item> &all_fields, List<Item> &fields, Item_sum ***func); int rollup_send_data(uint idx); |