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Bug#27704: incorrect comparison of rows with NULL components

Browse Source 
Support for NULL components was incomplete for row comparison,
fixed.  Added support for abort_on_null at compare_row() like
in 5.x


sql/item_cmpfunc.h:
  Bug#27704: incorrect comparison of rows with NULL components
  Added support for abort_on_null at Item_bool_func2
  like in 5.x
sql/item_cmpfunc.cc:
  Bug#27704: incorrect comparison of rows with NULL components
  Support for NULL components was incomplete for row comparison,
  fixed. Added support for abort_on_null at compare_row() like
  in 5.x
mysql-test/t/row.test:
  Test case updated for Bug#27704 (incorrect comparison 
  of rows with NULL components)
mysql-test/r/row.result:
  Test case updated for Bug#27704 (incorrect comparison 
  of rows with NULL components)
mysql-test/r/subselect.result:
  Test case updated for Bug#27704 (incorrect comparison 
  of rows with NULL components)
This commit is contained in:
unknown
2007-04-20 15:14:09 +05:00
parent 78c734b013
commit a8f639fccc
5 changed files with 180 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

99
mysql-test/r/row.result
View File

@@ -53,7 +53,7 @@ SELECT (1,2,3)=(1,NULL,3);
NULL
SELECT (1,2,3)=(1,NULL,0);
(1,2,3)=(1,NULL,0)
NULL
0
SELECT ROW(1,2,3)=ROW(1,2,3);
ROW(1,2,3)=ROW(1,2,3)
1
@@ -188,3 +188,100 @@ SELECT ROW(2,1) IN (ROW(21,2),ROW(ROW(1,1,3),0));
ERROR 21000: Operand should contain 1 column(s)
SELECT ROW(2,1) IN (ROW(ROW(1,1,3),0),ROW(21,2));
ERROR 21000: Operand should contain 1 column(s)
CREATE TABLE t1(a int, b int, c int);
INSERT INTO t1 VALUES (1, 2, 3),
(NULL, 2, 3 ), (1, NULL, 3 ), (1, 2, NULL),
(NULL, 2, 3+1), (1, NULL, 3+1), (1, 2+1, NULL),
(NULL, 2, 3-1), (1, NULL, 3-1), (1, 2-1, NULL);
SELECT (1,2,3) = (1, NULL, 3);
(1,2,3) = (1, NULL, 3)
NULL
SELECT (1,2,3) = (1+1, NULL, 3);
(1,2,3) = (1+1, NULL, 3)
0
SELECT (1,2,3) = (1, NULL, 3+1);
(1,2,3) = (1, NULL, 3+1)
0
SELECT * FROM t1 WHERE (a,b,c) = (1,2,3);
a b c
1 2 3
SELECT (1,2,3) <> (1, NULL, 3);
(1,2,3) <> (1, NULL, 3)
NULL
SELECT (1,2,3) <> (1+1, NULL, 3);
(1,2,3) <> (1+1, NULL, 3)
1
SELECT (1,2,3) <> (1, NULL, 3+1);
(1,2,3) <> (1, NULL, 3+1)
1
SELECT * FROM t1 WHERE (a,b,c) <> (1,2,3);
a b c
NULL 2 4
1 NULL 4
1 3 NULL
NULL 2 2
1 NULL 2
1 1 NULL
SELECT (1,2,3) < (NULL, 2, 3);
(1,2,3) < (NULL, 2, 3)
NULL
SELECT (1,2,3) < (1, NULL, 3);
(1,2,3) < (1, NULL, 3)
NULL
SELECT (1,2,3) < (1-1, NULL, 3);
(1,2,3) < (1-1, NULL, 3)
0
SELECT (1,2,3) < (1+1, NULL, 3);
(1,2,3) < (1+1, NULL, 3)
1
SELECT * FROM t1 WHERE (a,b,c) < (1,2,3);
a b c
1 1 NULL
SELECT (1,2,3) <= (NULL, 2, 3);
(1,2,3) <= (NULL, 2, 3)
NULL
SELECT (1,2,3) <= (1, NULL, 3);
(1,2,3) <= (1, NULL, 3)
NULL
SELECT (1,2,3) <= (1-1, NULL, 3);
(1,2,3) <= (1-1, NULL, 3)
0
SELECT (1,2,3) <= (1+1, NULL, 3);
(1,2,3) <= (1+1, NULL, 3)
1
SELECT * FROM t1 WHERE (a,b,c) <= (1,2,3);
a b c
1 2 3
1 1 NULL
SELECT (1,2,3) > (NULL, 2, 3);
(1,2,3) > (NULL, 2, 3)
NULL
SELECT (1,2,3) > (1, NULL, 3);
(1,2,3) > (1, NULL, 3)
NULL
SELECT (1,2,3) > (1-1, NULL, 3);
(1,2,3) > (1-1, NULL, 3)
1
SELECT (1,2,3) > (1+1, NULL, 3);
(1,2,3) > (1+1, NULL, 3)
0
SELECT * FROM t1 WHERE (a,b,c) > (1,2,3);
a b c
1 3 NULL
SELECT (1,2,3) >= (NULL, 2, 3);
(1,2,3) >= (NULL, 2, 3)
NULL
SELECT (1,2,3) >= (1, NULL, 3);
(1,2,3) >= (1, NULL, 3)
NULL
SELECT (1,2,3) >= (1-1, NULL, 3);
(1,2,3) >= (1-1, NULL, 3)
1
SELECT (1,2,3) >= (1+1, NULL, 3);
(1,2,3) >= (1+1, NULL, 3)
0
SELECT * FROM t1 WHERE (a,b,c) >= (1,2,3);
a b c
1 2 3
1 3 NULL
DROP TABLE t1;