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local merge

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This commit is contained in:
Tor Didriksen
2011-08-30 11:10:01 +02:00
parent 93d2fcbc9c d6f4a80e57
commit 2fdad9aaef
3 changed files with 49 additions and 2 deletions
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32
mysql-test/r/group_by.result
View File

@ -1891,4 +1891,36 @@ a AVG(t1.b) t11c t12c
1 4.0000 6 6
2 2.0000 7 7
DROP TABLE t1;
#
# Bug#11765254 (58200): Assertion failed: param.sort_length when grouping
# by functions
#
SET SQL_BIG_TABLES=1;
CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (0),(0);
SELECT 1 FROM t1 GROUP BY IF(`a`,'','');
1
1
SELECT 1 FROM t1 GROUP BY TRIM(LEADING RAND() FROM '');
1
1
SELECT 1 FROM t1 GROUP BY SUBSTRING('',SLEEP(0),'');
1
1
Warnings:
Warning 1292 Truncated incorrect INTEGER value: ''
Warning 1292 Truncated incorrect INTEGER value: ''
Warning 1292 Truncated incorrect INTEGER value: ''
SELECT 1 FROM t1 GROUP BY SUBSTRING(SYSDATE() FROM 'K' FOR 'jxW<');
1
1
Warnings:
Warning 1292 Truncated incorrect INTEGER value: 'K'
Warning 1292 Truncated incorrect INTEGER value: 'jxW<'
Warning 1292 Truncated incorrect INTEGER value: 'K'
Warning 1292 Truncated incorrect INTEGER value: 'jxW<'
Warning 1292 Truncated incorrect INTEGER value: 'K'
Warning 1292 Truncated incorrect INTEGER value: 'jxW<'
DROP TABLE t1;
SET SQL_BIG_TABLES=0;
# End of 5.1 tests

14
mysql-test/t/group_by.test
View File

@ -1283,5 +1283,19 @@ FROM t1 GROUP BY a;
DROP TABLE t1;
--echo #
--echo # Bug#11765254 (58200): Assertion failed: param.sort_length when grouping
--echo # by functions
--echo #
SET SQL_BIG_TABLES=1;
CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (0),(0);
SELECT 1 FROM t1 GROUP BY IF(`a`,'','');
SELECT 1 FROM t1 GROUP BY TRIM(LEADING RAND() FROM '');
SELECT 1 FROM t1 GROUP BY SUBSTRING('',SLEEP(0),'');
SELECT 1 FROM t1 GROUP BY SUBSTRING(SYSDATE() FROM 'K' FOR 'jxW<');
DROP TABLE t1;
SET SQL_BIG_TABLES=0;
--echo # End of 5.1 tests

5
sql/filesort.cc
View File

@ -144,8 +144,6 @@ ha_rows filesort(THD *thd, TABLE *table, SORT_FIELD *sortorder, uint s_length,
error= 1;
bzero((char*) &param,sizeof(param));
param.sort_length= sortlength(thd, sortorder, s_length, &multi_byte_charset);
/* filesort cannot handle zero-length records. */
DBUG_ASSERT(param.sort_length);
param.ref_length= table->file->ref_length;
param.addon_field= 0;
param.addon_length= 0;
@ -257,6 +255,9 @@ ha_rows filesort(THD *thd, TABLE *table, SORT_FIELD *sortorder, uint s_length,
}
else
{
/* filesort cannot handle zero-length records during merge. */
DBUG_ASSERT(param.sort_length != 0);
if (table_sort.buffpek && table_sort.buffpek_len < maxbuffer)
{
x_free(table_sort.buffpek);