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Fixed bug #32335.

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Comparison of a BIGINT NOT NULL column with a constant arithmetic
expression that evaluates to NULL caused error 1048: "Column '...'
cannot be null".

Made convert_constant_item() check if the constant expression is NULL
before attempting to store it in a field. Attempts to store NULL in a
NOT NULL field caused query errors.


sql/item_cmpfunc.cc:
  Fixed bug #32335.
  1. Made convert_constant_item() check if the constant expression is NULL
     before attempting to store it in a field. Attempts to store NULL in
     a NOT NULL field caused query errors.
  
  2. Also minor bug has been fixed: the thd->count_cuted_fields value
     was not restored in case of successful conversion.
mysql-test/t/select.test:
  Added test case for bug #32335.
mysql-test/r/select.result:
  Added test case for bug #32335.
This commit is contained in:
unknown
2007-11-18 00:02:55 +04:00
parent 4b48eb6f1e
commit 99054db64c
3 changed files with 19 additions and 1 deletions
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6
mysql-test/r/select.result
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@ -4322,4 +4322,10 @@ c3
DROP TABLE t1;
DROP TABLE t2;
CREATE TABLE t1 (c1 BIGINT NOT NULL);
INSERT INTO t1 (c1) VALUES (1);
SELECT * FROM t1 WHERE c1 > NULL + 1;
c1
DROP TABLE t1;
End of 5.0 tests