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| author | unknown <cmiller@zippy.cornsilk.net> | 2006-11-06 17:13:19 -0500 |
|---|---|---|
| committer | unknown <cmiller@zippy.cornsilk.net> | 2006-11-06 17:13:19 -0500 |
| commit | 2b35fee8ab4bce7c40b95cb6b3b3593bd0960546 (patch) | |
| tree | bed54dd373e9401ad43610e0d42dddde20eb40d7 /mysql-test/r/func_test.result | |
| parent | e1a722b2d3a428c650bf08527b8c9ed9bdbd3e08 (diff) | |
| download | mariadb-git-2b35fee8ab4bce7c40b95cb6b3b3593bd0960546.tar.gz | |
Bug#23411: ... MOD-ing zero returns strange result
The Item_func_mod objects never had maybe_null set, so users had no reason
to expect that they can be NULL, and may therefore deduce wrong results.
Now, set maybe_null.
mysql-test/r/func_test.result:
Verify that the predictions are true.
mysql-test/t/func_test.test:
Verify that the predictions are true.
sql/item_func.cc:
MOD functions may be NULL.
Diffstat (limited to 'mysql-test/r/func_test.result')
| -rw-r--r-- | mysql-test/r/func_test.result | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/mysql-test/r/func_test.result b/mysql-test/r/func_test.result index 8a28312b348..39ec94bc3aa 100644 --- a/mysql-test/r/func_test.result +++ b/mysql-test/r/func_test.result @@ -183,3 +183,78 @@ select 5.1 mod 3, 5.1 mod -3, -5.1 mod 3, -5.1 mod -3; select 5 mod 3, 5 mod -3, -5 mod 3, -5 mod -3; 5 mod 3 5 mod -3 -5 mod 3 -5 mod -3 2 2 -2 -2 +select (12%0) <=> null as '1'; +1 +1 +select (12%0) is null as '1'; +1 +1 +select 12%0 as 'NULL'; +NULL +NULL +select 12%2 as '0'; +0 +0 +select 12%NULL as 'NULL'; +NULL +NULL +select 12 % null as 'NULL'; +NULL +NULL +select null % 12 as 'NULL'; +NULL +NULL +select null % 0 as 'NULL'; +NULL +NULL +select 0 % null as 'NULL'; +NULL +NULL +select null % null as 'NULL'; +NULL +NULL +select (12 mod 0) <=> null as '1'; +1 +1 +select (12 mod 0) is null as '1'; +1 +1 +select 12 mod 0 as 'NULL'; +NULL +NULL +select 12 mod 2 as '0'; +0 +0 +select 12 mod null as 'NULL'; +NULL +NULL +select null mod 12 as 'NULL'; +NULL +NULL +select null mod 0 as 'NULL'; +NULL +NULL +select 0 mod null as 'NULL'; +NULL +NULL +select null mod null as 'NULL'; +NULL +NULL +select mod(12.0, 0) as 'NULL'; +NULL +NULL +select mod(12, 0.0) as 'NULL'; +NULL +NULL +select mod(12, NULL) as 'NULL'; +NULL +NULL +select mod(12.0, NULL) as 'NULL'; +NULL +NULL +select mod(NULL, 2) as 'NULL'; +NULL +NULL +select mod(NULL, 2.0) as 'NULL'; +NULL +NULL |