diff options
Diffstat (limited to 'sql/sql_class.h')
| -rw-r--r-- | sql/sql_class.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/sql/sql_class.h b/sql/sql_class.h index 904ffda5c85..c6f277f7bc7 100644 --- a/sql/sql_class.h +++ b/sql/sql_class.h @@ -2970,6 +2970,8 @@ public: uint convert_blob_length; CHARSET_INFO *table_charset; bool schema_table; + /* TRUE if the temp table is created for subquery materialization. */ + bool materialized_subquery; /* True if GROUP BY and its aggregate functions are already computed by a table access method (e.g. by loose index scan). In this case @@ -2993,8 +2995,8 @@ public: TMP_TABLE_PARAM() :copy_field(0), group_parts(0), group_length(0), group_null_parts(0), convert_blob_length(0), - schema_table(0), precomputed_group_by(0), force_copy_fields(0), - bit_fields_as_long(0), skip_create_table(0) + schema_table(0), materialized_subquery(0), precomputed_group_by(0), + force_copy_fields(0), bit_fields_as_long(0), skip_create_table(0) {} ~TMP_TABLE_PARAM() { @@ -3028,6 +3030,7 @@ public: virtual bool create_result_table(THD *thd, List<Item> *column_types, bool is_distinct, ulonglong options, const char *alias, bool bit_fields_as_long); + TMP_TABLE_PARAM *get_tmp_table_param() { return &tmp_table_param; } }; /* Base subselect interface class */ @@ -3091,7 +3094,7 @@ protected: void reset(); public: - select_materialize_with_stats() {} + select_materialize_with_stats() { tmp_table_param.init(); } virtual bool create_result_table(THD *thd, List<Item> *column_types, bool is_distinct, ulonglong options, const char *alias, bool bit_fields_as_long); |