diff options
Diffstat (limited to 'sql/field.h')
| -rw-r--r-- | sql/field.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sql/field.h b/sql/field.h index dfc02149f9d..ac480b15324 100644 --- a/sql/field.h +++ b/sql/field.h @@ -1611,6 +1611,7 @@ public: virtual longlong val_time_packed(THD *thd); virtual const TYPELIB *get_typelib() const { return NULL; } virtual CHARSET_INFO *charset() const= 0; + virtual void change_charset(const DTCollation &new_cs) {} virtual const DTCollation &dtcollation() const= 0; virtual CHARSET_INFO *charset_for_protocol(void) const { return binary() ? &my_charset_bin : charset(); } @@ -2109,6 +2110,12 @@ public: { return m_collation; } + void change_charset(const DTCollation &new_cs) override + { + field_length= (field_length * new_cs.collation->mbmaxlen) / + m_collation.collation->mbmaxlen; + m_collation= new_cs; + } bool binary() const override { return field_charset() == &my_charset_bin; } uint32 max_display_length() const override { return field_length; } uint32 character_octet_length() const override { return field_length; } |