diff options
Diffstat (limited to 'sql/field.cc')
| -rw-r--r-- | sql/field.cc | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/sql/field.cc b/sql/field.cc index 1275e1bbb8e..5332607c6d5 100644 --- a/sql/field.cc +++ b/sql/field.cc @@ -4418,6 +4418,8 @@ String *Field_string::val_str(String *val_buffer __attribute__((unused)), int Field_string::cmp(const char *a_ptr, const char *b_ptr) { + uint a_len, b_len; + if (field_charset->strxfrm_multiply > 1) { /* @@ -4429,10 +4431,19 @@ int Field_string::cmp(const char *a_ptr, const char *b_ptr) (const uchar*) b_ptr, field_length); } - return my_strnncoll(field_charset,(const uchar*) a_ptr, field_length, - (const uchar*) b_ptr, field_length); + if (field_charset->mbmaxlen != 1) + { + uint char_len= field_length/field_charset->mbmaxlen; + a_len= my_charpos(field_charset, a_ptr, a_ptr + field_length, char_len); + b_len= my_charpos(field_charset, b_ptr, b_ptr + field_length, char_len); + } + else + a_len= b_len= field_length; + return my_strnncoll(field_charset,(const uchar*) a_ptr, a_len, + (const uchar*) b_ptr, b_len); } + void Field_string::sort_string(char *to,uint length) { uint tmp=my_strnxfrm(field_charset, @@ -5958,8 +5969,15 @@ Field *make_field(char *ptr, uint32 field_length, if (f_is_alpha(pack_flag)) { if (!f_is_packed(pack_flag)) - return new Field_string(ptr,field_length,null_pos,null_bit, - unireg_check, field_name, table, field_charset); + { + if (field_type == FIELD_TYPE_STRING || + field_type == FIELD_TYPE_DECIMAL || // 3.23 or 4.0 string + field_type == FIELD_TYPE_VAR_STRING) + return new Field_string(ptr,field_length,null_pos,null_bit, + unireg_check, field_name, table, + field_charset); + return 0; // Error + } uint pack_length=calc_pack_length((enum_field_types) f_packtype(pack_flag), |