diff options
Diffstat (limited to 'sql/sql_type.h')
| -rw-r--r-- | sql/sql_type.h | 45 |
1 files changed, 33 insertions, 12 deletions
diff --git a/sql/sql_type.h b/sql/sql_type.h index db4f67e343f..271e74a9762 100644 --- a/sql/sql_type.h +++ b/sql/sql_type.h @@ -4049,9 +4049,21 @@ public: Item *target_expr, Item *target_value, Item_bool_func2 *source, Item *source_expr, Item *source_const) const= 0; + + /* + @brief + Check if an IN subquery allows materialization or not + @param + inner expression on the inner side of the IN subquery + outer expression on the outer side of the IN subquery + is_in_predicate SET to true if IN subquery was converted from an + IN predicate or we are checking if materialization + strategy can be used for an IN predicate + */ virtual bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const= 0; + const Item *outer, + bool is_in_predicate) const= 0; /** Make a simple constant replacement item for a constant "src", so the new item can futher be used for comparison with "cmp", e.g.: @@ -4311,8 +4323,8 @@ public: DBUG_ASSERT(0); return 0; } - bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const override + bool subquery_type_allows_materialization(const Item *, const Item *, + bool) const override { DBUG_ASSERT(0); return false; @@ -4714,7 +4726,8 @@ public: int stored_field_cmp_to_item(THD *thd, Field *field, Item *item) const override; bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) + const Item *outer, + bool is_in_predicate) const override; void make_sort_key_part(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field, @@ -4819,7 +4832,9 @@ public: return item_val.is_null() ? 0 : my_decimal(field).cmp(item_val.ptr()); } bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const override; + const Item *outer, + bool is_in_predicate) + const override; Field *make_schema_field(MEM_ROOT *root, TABLE *table, const Record_addr &addr, @@ -5073,7 +5088,9 @@ public: const Type_handler *type_handler_for_comparison() const override; int stored_field_cmp_to_item(THD *thd, Field *field, Item *item) const override; bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const override; + const Item *outer, + bool is_in_predicate) + const override; Field *make_num_distinct_aggregator_field(MEM_ROOT *, const Item *) const override; Field *make_table_field(MEM_ROOT *root, const LEX_CSTRING *name, @@ -5214,7 +5231,9 @@ public: Item *source_expr, Item *source_const) const override; bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const override; + const Item *outer, + bool is_in_predicate) + const override; bool Item_func_min_max_fix_attributes(THD *thd, Item_func_min_max *func, Item **items, uint nitems) const override; @@ -5352,7 +5371,9 @@ public: Item *source_expr, Item *source_const) const override; bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const override; + const Item *outer, + bool is_in_predicate) + const override; Item *make_const_item_for_comparison(THD *, Item *src, const Item *cmp) const override; Item_cache *Item_get_cache(THD *thd, const Item *item) const override; @@ -6983,8 +7004,8 @@ public: { return blob_type_handler(item); } - bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const override + bool subquery_type_allows_materialization(const Item *, const Item *, bool) + const override { return false; // Materialization does not work with BLOB columns } @@ -7114,7 +7135,7 @@ public: { return MYSQL_TYPE_BLOB_COMPRESSED; } - ulong KEY_pack_flags(uint column_nr) const override + ulong KEY_pack_flags(uint) const override { DBUG_ASSERT(0); return 0; @@ -7125,7 +7146,7 @@ public: Field *make_conversion_table_field(MEM_ROOT *root, TABLE *table, uint metadata, const Field *target) const override; - enum_dynamic_column_type dyncol_type(const Type_all_attributes *attr) + enum_dynamic_column_type dyncol_type(const Type_all_attributes *) const override { DBUG_ASSERT(0); |