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| author | holyfoot/hf@deer.(none) <> | 2006-11-17 19:01:35 +0400 |
|---|---|---|
| committer | holyfoot/hf@deer.(none) <> | 2006-11-17 19:01:35 +0400 |
| commit | 7d190dd6b11365528f2341699c24812dd63f6165 (patch) | |
| tree | 584324c076d2a4506331c1fb96cf95d2c50a85e3 /sql/item.h | |
| parent | dd0b81885d7ddc33e5c9acaffbdbf8b35cde5894 (diff) | |
| parent | 0357510dca406263d00a8bd1007e4f8784f658b8 (diff) | |
| download | mariadb-git-7d190dd6b11365528f2341699c24812dd63f6165.tar.gz | |
Merge bk@192.168.21.1:mysql-5.1-opt
into mysql.com:/home/hf/work/mysql-5.1-mrg
Diffstat (limited to 'sql/item.h')
| -rw-r--r-- | sql/item.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sql/item.h b/sql/item.h index 2c26e1c4a07..126e106330d 100644 --- a/sql/item.h +++ b/sql/item.h @@ -646,9 +646,14 @@ public: my_decimal *val_decimal_from_real(my_decimal *decimal_value); my_decimal *val_decimal_from_int(my_decimal *decimal_value); my_decimal *val_decimal_from_string(my_decimal *decimal_value); + my_decimal *val_decimal_from_date(my_decimal *decimal_value); + my_decimal *val_decimal_from_time(my_decimal *decimal_value); longlong val_int_from_decimal(); double val_real_from_decimal(); + int save_time_in_field(Field *field); + int save_date_in_field(Field *field); + virtual Field *get_tmp_table_field() { return 0; } /* This is also used to create fields in CREATE ... SELECT: */ virtual Field *tmp_table_field(TABLE *t_arg) { return 0; } @@ -2049,6 +2054,16 @@ public: class Item_in_subselect; + +/* + An object of this class: + - Converts val_XXX() calls to ref->val_XXX_result() calls, like Item_ref. + - Sets owner->was_null=TRUE if it has returned a NULL value from any + val_XXX() function. This allows to inject an Item_ref_null_helper + object into subquery and then check if the subquery has produced a row + with NULL value. +*/ + class Item_ref_null_helper: public Item_ref { protected: |