Commit 81914f48 authored by unknown's avatar unknown
Browse files

Bug #6043 erratic searching for diacriticals in indexed MyISAM UTF-8 table

parent 761ae02c

mysql-test/r/ctype_utf8.result

+29 −0
Original line number Diff line number Diff line
@@ -750,3 +750,32 @@ SELECT id FROM t1 WHERE (list_id = 1) AND (term = "letterd"); 
id

4

DROP TABLE t1;

SET NAMES latin1;

CREATE TABLE t1 (

id int unsigned NOT NULL auto_increment,

list_id smallint unsigned NOT NULL,

term text NOT NULL,

PRIMARY KEY(id),

INDEX(list_id, term(19))

) TYPE=MyISAM CHARSET=utf8;

Warnings:

Warning	1287	'TYPE=storage_engine' is deprecated; use 'ENGINE=storage_engine' instead

INSERT INTO t1 set list_id = 1, term = "testtest";

INSERT INTO t1 set list_id = 1, term = "testetest";

INSERT INTO t1 set list_id = 1, term = "testtest";

SELECT id, term FROM t1 where (list_id = 1) AND (term = "testtest");

id	term

1	testtest

2	testetest

3	testtest

SELECT id, term FROM t1 where (list_id = 1) AND (term = "testetest");

id	term

1	testtest

2	testetest

3	testtest

SELECT id, term FROM t1 where (list_id = 1) AND (term = "testtest");

id	term

1	testtest

2	testetest

3	testtest

DROP TABLE t1;

mysql-test/t/ctype_utf8.test

+20 −0
Original line number Diff line number Diff line
@@ -592,3 +592,23 @@ SELECT id FROM t1 WHERE (list_id = 1) AND (term = "letterb"); 
SELECT id FROM t1 WHERE (list_id = 1) AND (term = "lettera");

SELECT id FROM t1 WHERE (list_id = 1) AND (term = "letterd");

DROP TABLE t1;





#

# Bug #6043 erratic searching for diacriticals in indexed MyISAM UTF-8 table

#

SET NAMES latin1;

CREATE TABLE t1 (

    id int unsigned NOT NULL auto_increment,

    list_id smallint unsigned NOT NULL,

    term text NOT NULL,

    PRIMARY KEY(id),

    INDEX(list_id, term(19))

) TYPE=MyISAM CHARSET=utf8;

INSERT INTO t1 set list_id = 1, term = "testtest";

INSERT INTO t1 set list_id = 1, term = "testetest";

INSERT INTO t1 set list_id = 1, term = "testtest";

SELECT id, term FROM t1 where (list_id = 1) AND (term = "testtest");

SELECT id, term FROM t1 where (list_id = 1) AND (term = "testetest");

SELECT id, term FROM t1 where (list_id = 1) AND (term = "testtest");

DROP TABLE t1;

sql/field.cc

+6 −6
Original line number Diff line number Diff line
@@ -5000,10 +5000,10 @@ String *Field_blob::val_str(String *val_buffer __attribute__((unused)), 
int Field_blob::cmp(const char *a,uint32 a_length, const char *b,

		    uint32 b_length)

{

  int diff=my_strnncoll(field_charset,

			(const uchar*)a,min(a_length,b_length),

			(const uchar*)b,min(a_length,b_length));

  return diff ? diff : (int) (a_length - b_length);

  return field_charset->coll->strnncoll(field_charset, 

                                        (const uchar*)a, a_length,

                                        (const uchar*)b, b_length,

                                        0);

}
@@ -5087,8 +5087,8 @@ void Field_blob::get_key_image(char *buff,uint length, 


  get_ptr(&blob);

  uint char_length= length / cs->mbmaxlen;

  char_length= my_charpos(cs, blob, blob + length, char_length);

  set_if_smaller(length, char_length);

  char_length= my_charpos(cs, blob, blob + blob_length, char_length);

  set_if_smaller(blob_length, char_length);



  if ((uint32) length > blob_length)

  {