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Bug#25126: Reference to non-existant column in UPDATE...ORDER BY... crashes server

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"update existingtable set anycolumn=nonexisting order by nonexisting" would crash
the server.

Though we would find the reference to a field, that doesn't mean we can then use
it to set some values.  It could be a reference to another field.  If it is NULL, 
don't try to use it to set values in the Item_field and instead return an error.

Over the previous patch, this signals an error at the location of the error, rather
than letting the subsequent deref signal it.
This commit is contained in:
cmiller@calliope.local.cmiller/calliope.local
2007-02-09 11:05:36 +01:00
parent 26c0934ee3
commit 0733ea7462
3 changed files with 66 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
mysql-test/r/order_by.result
View File

@ -847,3 +847,27 @@ num (select num + 2 FROM t1 LIMIT 1)
SELECT a.a + 1 AS num FROM t1 a JOIN t1 b ON num = b.a;
ERROR 42S22: Unknown column 'num' in 'on clause'
DROP TABLE t1;
CREATE TABLE bug25126 (
val int unsigned NOT NULL AUTO_INCREMENT PRIMARY KEY
);
UPDATE bug25126 SET MissingCol = MissingCol;
ERROR 42S22: Unknown column 'MissingCol' in 'field list'
UPDATE bug25126 SET val = val ORDER BY MissingCol;
ERROR 42S22: Unknown column 'MissingCol' in 'order clause'
UPDATE bug25126 SET val = val ORDER BY val;
UPDATE bug25126 SET val = 1 ORDER BY val;
UPDATE bug25126 SET val = 1 ORDER BY MissingCol;
ERROR 42S22: Unknown column 'MissingCol' in 'order clause'
UPDATE bug25126 SET val = 1 ORDER BY val, MissingCol;
ERROR 42S22: Unknown column 'MissingCol' in 'order clause'
UPDATE bug25126 SET val = MissingCol ORDER BY MissingCol;
ERROR 42S22: Unknown column 'MissingCol' in 'order clause'
UPDATE bug25126 SET MissingCol = 1 ORDER BY val, MissingCol;
ERROR 42S22: Unknown column 'MissingCol' in 'order clause'
UPDATE bug25126 SET MissingCol = 1 ORDER BY MissingCol;
ERROR 42S22: Unknown column 'MissingCol' in 'order clause'
UPDATE bug25126 SET MissingCol = val ORDER BY MissingCol;
ERROR 42S22: Unknown column 'MissingCol' in 'order clause'
UPDATE bug25126 SET MissingCol = MissingCol ORDER BY MissingCol;
ERROR 42S22: Unknown column 'MissingCol' in 'order clause'
DROP TABLE bug25126;

30
mysql-test/t/order_by.test
View File

@ -575,4 +575,34 @@ SELECT a + 1 AS num, (select num + 2 FROM t1 LIMIT 1) FROM t1;
SELECT a.a + 1 AS num FROM t1 a JOIN t1 b ON num = b.a;
DROP TABLE t1;
#
# Bug#25126: Reference to non-existant column in UPDATE...ORDER BY...
# crashes server
#
CREATE TABLE bug25126 (
val int unsigned NOT NULL AUTO_INCREMENT PRIMARY KEY
);
--error 1054
UPDATE bug25126 SET MissingCol = MissingCol;
--error 1054
UPDATE bug25126 SET val = val ORDER BY MissingCol;
UPDATE bug25126 SET val = val ORDER BY val;
UPDATE bug25126 SET val = 1 ORDER BY val;
--error 1054
UPDATE bug25126 SET val = 1 ORDER BY MissingCol;
--error 1054
UPDATE bug25126 SET val = 1 ORDER BY val, MissingCol;
--error 1054
UPDATE bug25126 SET val = MissingCol ORDER BY MissingCol;
--error 1054
UPDATE bug25126 SET MissingCol = 1 ORDER BY val, MissingCol;
--error 1054
UPDATE bug25126 SET MissingCol = 1 ORDER BY MissingCol;
--error 1054
UPDATE bug25126 SET MissingCol = val ORDER BY MissingCol;
--error 1054
UPDATE bug25126 SET MissingCol = MissingCol ORDER BY MissingCol;
DROP TABLE bug25126;
# End of 4.1 tests