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| author | Marko Mäkelä <marko.makela@mariadb.com> | 2020-12-01 19:51:14 +0200 |
|---|---|---|
| committer | Marko Mäkelä <marko.makela@mariadb.com> | 2020-12-01 19:51:14 +0200 |
| commit | 589cf8dbf3accf57673d7e2f7a4435f7eaf33565 (patch) | |
| tree | aa38a67d10f71fc781188341857e34d437fa9199 /sql/sql_type.h | |
| parent | a3531775b1efe06e2439a0c8ab668a2b69c859eb (diff) | |
| parent | e30a05f4540b581df2e7d98bd7e812aeff603744 (diff) | |
| download | mariadb-git-589cf8dbf3accf57673d7e2f7a4435f7eaf33565.tar.gz | |
Merge 10.3 into 10.4
Diffstat (limited to 'sql/sql_type.h')
| -rw-r--r-- | sql/sql_type.h | 38 |
1 files changed, 29 insertions, 9 deletions
diff --git a/sql/sql_type.h b/sql/sql_type.h index 939c651233c..f8ebc269788 100644 --- a/sql/sql_type.h +++ b/sql/sql_type.h @@ -3718,9 +3718,21 @@ 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.: @@ -3966,7 +3978,8 @@ public: return 0; } bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const + const Item *outer, + bool is_in_predicate) const { DBUG_ASSERT(0); return false; @@ -4313,7 +4326,8 @@ public: const Field *field) const; int stored_field_cmp_to_item(THD *thd, Field *field, Item *item) const; bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const; + const Item *outer, + bool is_in_predicate) const; void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field, Sort_param *param) const; void sortlength(THD *thd, @@ -4399,7 +4413,8 @@ 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; + const Item *outer, + bool is_in_predicate) const; Field *make_num_distinct_aggregator_field(MEM_ROOT *, const Item *) const; void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field, Sort_param *param) const; @@ -4624,7 +4639,8 @@ public: const Type_handler *type_handler_for_comparison() const; int stored_field_cmp_to_item(THD *thd, Field *field, Item *item) const; bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const; + const Item *outer, + bool is_in_predicate) const; Field *make_num_distinct_aggregator_field(MEM_ROOT *, const Item *) const; void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field, Sort_param *param) const; @@ -4733,7 +4749,8 @@ public: Item_bool_func2 *source, Item *source_expr, Item *source_const) const; bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const; + const Item *outer, + bool is_in_predicate) const; bool Item_func_min_max_fix_attributes(THD *thd, Item_func_min_max *func, Item **items, uint nitems) const; bool Item_sum_hybrid_fix_length_and_dec(Item_sum_hybrid *func) const; @@ -4855,7 +4872,8 @@ public: Item_bool_func2 *source, Item *source_expr, Item *source_const) const; bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const; + const Item *outer, + bool is_in_predicate) const; Item *make_const_item_for_comparison(THD *, Item *src, const Item *cmp) const; Item_cache *Item_get_cache(THD *thd, const Item *item) const; bool set_comparator_func(Arg_comparator *cmp) const; @@ -6185,7 +6203,8 @@ public: return blob_type_handler(item); } bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const + const Item *outer, + bool is_in_predicate) const { return false; // Materialization does not work with BLOB columns } @@ -6304,7 +6323,8 @@ public: return true; } bool subquery_type_allows_materialization(const Item *inner, - const Item *outer) const + const Item *outer, + bool is_in_predicate) const { return false; // Materialization does not work with GEOMETRY columns } |