diff options
Diffstat (limited to 'sql/field.h')
| -rw-r--r-- | sql/field.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/sql/field.h b/sql/field.h index a311f8f9ea8..5289b1c3b5d 100644 --- a/sql/field.h +++ b/sql/field.h @@ -1531,11 +1531,20 @@ public: if (null_ptr) null_ptr=ADD_TO_PTR(null_ptr,ptr_diff,uchar*); } + + /* + Copy the Field's value to buff. The value will be in table->record[] + format. + */ void get_image(uchar *buff, uint length, CHARSET_INFO *cs) const { get_image(buff, length, ptr, cs); } virtual void get_image(uchar *buff, uint length, const uchar *ptr_arg, CHARSET_INFO *cs) const { memcpy(buff,ptr_arg,length); } + + /* + Set Field's value to the value in *buf. + */ virtual void set_image(const uchar *buff,uint length, CHARSET_INFO *cs) { memcpy(ptr,buff,length); } @@ -1875,6 +1884,7 @@ public: { return (double) 0.5; } + virtual bool pos_through_val_str() { return false;} /* Check if comparison between the field and an item unambiguously @@ -2160,6 +2170,8 @@ public: { return pos_in_interval_val_str(min, max, length_size()); } + bool pos_through_val_str() override {return true;} + bool test_if_equality_guarantees_uniqueness(const Item *const_item) const override; SEL_ARG *get_mm_leaf(RANGE_OPT_PARAM *param, KEY_PART *key_part, @@ -5907,4 +5919,12 @@ ulonglong TABLE::vers_start_id() const return static_cast<ulonglong>(vers_start_field()->val_int()); } +double pos_in_interval_for_string(CHARSET_INFO *cset, + const uchar *midp_val, uint32 midp_len, + const uchar *min_val, uint32 min_len, + const uchar *max_val, uint32 max_len); + +double pos_in_interval_for_double(double midp_val, + double min_val, double max_val); + #endif /* FIELD_INCLUDED */ |