diff options
Diffstat (limited to 'mysql-test/t/row.test')
| -rw-r--r-- | mysql-test/t/row.test | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/mysql-test/t/row.test b/mysql-test/t/row.test index bf25359b7be..d2750fecbac 100644 --- a/mysql-test/t/row.test +++ b/mysql-test/t/row.test @@ -110,6 +110,51 @@ SELECT ROW(2,1) IN (ROW(21,2),ROW(ROW(1,1,3),0)); --error 1241 SELECT ROW(2,1) IN (ROW(ROW(1,1,3),0),ROW(21,2)); +# +# Bug#27704: erroneous comparison of rows with NULL components +# +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); +SELECT (1,2,3) = (1+1, NULL, 3); +SELECT (1,2,3) = (1, NULL, 3+1); +SELECT * FROM t1 WHERE (a,b,c) = (1,2,3); + +SELECT (1,2,3) <> (1, NULL, 3); +SELECT (1,2,3) <> (1+1, NULL, 3); +SELECT (1,2,3) <> (1, NULL, 3+1); +SELECT * FROM t1 WHERE (a,b,c) <> (1,2,3); + +SELECT (1,2,3) < (NULL, 2, 3); +SELECT (1,2,3) < (1, NULL, 3); +SELECT (1,2,3) < (1-1, NULL, 3); +SELECT (1,2,3) < (1+1, NULL, 3); +SELECT * FROM t1 WHERE (a,b,c) < (1,2,3); + +SELECT (1,2,3) <= (NULL, 2, 3); +SELECT (1,2,3) <= (1, NULL, 3); +SELECT (1,2,3) <= (1-1, NULL, 3); +SELECT (1,2,3) <= (1+1, NULL, 3); +SELECT * FROM t1 WHERE (a,b,c) <= (1,2,3); + +SELECT (1,2,3) > (NULL, 2, 3); +SELECT (1,2,3) > (1, NULL, 3); +SELECT (1,2,3) > (1-1, NULL, 3); +SELECT (1,2,3) > (1+1, NULL, 3); +SELECT * FROM t1 WHERE (a,b,c) > (1,2,3); + +SELECT (1,2,3) >= (NULL, 2, 3); +SELECT (1,2,3) >= (1, NULL, 3); +SELECT (1,2,3) >= (1-1, NULL, 3); +SELECT (1,2,3) >= (1+1, NULL, 3); +SELECT * FROM t1 WHERE (a,b,c) >= (1,2,3); + +DROP TABLE t1; + # End of 4.1 tests # |