Commit 4fdf0ce3 authored by unknown's avatar unknown
Browse files

Merge abarkov@bk-internal.mysql.com:/home/bk/mysql-4.1 

into  mysql.com:/usr/home/bar/mysql-4.1.b12611
parents 44e289b4 965afd45

mysql-test/r/ctype_utf8.result

+4 −0
Original line number Diff line number Diff line
@@ -955,6 +955,10 @@ char_length(a) length(a) a 
2	4	ан

drop table t1;

set names utf8;

select 'andre%' like 'andreñ%' escape 'ñ';

'andre%' like 'andreñ%' escape 'ñ'

1

set names utf8;

select 'a\\' like 'a\\';

'a\\' like 'a\\'

1

mysql-test/r/func_like.result

+7 −0
Original line number Diff line number Diff line
@@ -158,3 +158,10 @@ DROP TABLE t1; 
select _cp866'aaaaaaaaa' like _cp866'%aaaa%' collate cp866_bin;

_cp866'aaaaaaaaa' like _cp866'%aaaa%' collate cp866_bin

1

set names koi8r;

select 'andre%' like 'andre%' escape '';

'andre%' like 'andre%' escape ''

1

select _cp1251'andre%' like convert('andre%' using cp1251)  escape '';

_cp1251'andre%' like convert('andre%' using cp1251)  escape ''

1

mysql-test/t/ctype_utf8.test

+6 −0
Original line number Diff line number Diff line
@@ -810,6 +810,12 @@ alter table t1 modify a char(2) character set utf8; 
select char_length(a), length(a), a from t1 order by a;

drop table t1;



#

# Bugs#12611

# ESCAPE + LIKE do not work when the escape char is a multibyte one

#

set names utf8;

select 'andre%' like 'andreñ%' escape 'ñ';



#

# Bugs#11754: SET NAMES utf8 followed by SELECT "A\\" LIKE "A\\" returns 0

mysql-test/t/func_like.test

+17 −0
Original line number Diff line number Diff line
@@ -96,4 +96,21 @@ DROP TABLE t1; 
#

select _cp866'aaaaaaaaa' like _cp866'%aaaa%' collate cp866_bin;



#

# Check 8bit escape character

#

set names koi8r;

select 'andre%' like 'andre%' escape '';



# Check 8bit escape character with charset conversion:

# For "a LIKE b ESCAPE c" expressions,

# escape character is converted into the operation character set,

# which is result of aggregation  of character sets of "a" and "b".

# "c" itself doesn't take part in aggregation, because its collation

# doesn't matter, escape character is always compared binary.

# In the example below, escape character is converted from koi8r into cp1251:

#

select _cp1251'andre%' like convert('andre%' using cp1251)  escape '';



#

# End of 4.1 tests

sql/item_cmpfunc.cc

+36 −1
Original line number Diff line number Diff line
@@ -2293,7 +2293,42 @@ bool Item_func_like::fix_fields(THD *thd, TABLE_LIST *tlist, Item ** ref) 
  {

    /* If we are on execution stage */

    String *escape_str= escape_item->val_str(&tmp_value1);

    escape= escape_str ? *(escape_str->ptr()) : '\\';

    if (escape_str)

    {

      CHARSET_INFO *cs= cmp.cmp_collation.collation;

      if (use_mb(cs))

      {

        my_wc_t wc;

        int rc= cs->cset->mb_wc(cs, &wc,

                                (const uchar*) escape_str->ptr(),

                                (const uchar*) escape_str->ptr() +

                                               escape_str->length());

        escape= (int) (rc > 0 ? wc : '\\');

      }

      else

      {

        /*

          In the case of 8bit character set, we pass native

          code instead of Unicode code as "escape" argument.

          Convert to "cs" if charset of escape differs.

        */

        uint32 unused;

        if (escape_str->needs_conversion(escape_str->length(),

                                         escape_str->charset(), cs, &unused))

        {

          char ch;

          uint errors;

          uint32 cnvlen= copy_and_convert(&ch, 1, cs, escape_str->ptr(),

                                          escape_str->length(),

                                          escape_str->charset(), &errors);

          escape= cnvlen ? ch : '\\';

        }

        else

          escape= *(escape_str->ptr());

      }

    }

    else

      escape= '\\';

 

    /*

      We could also do boyer-more for non-const items, but as we would have to