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Diffstat (limited to 'mysql-test/t/func_in.test')
| -rw-r--r-- | mysql-test/t/func_in.test | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/mysql-test/t/func_in.test b/mysql-test/t/func_in.test index 2ffe5a2d5f7..ffed2aac2a0 100644 --- a/mysql-test/t/func_in.test +++ b/mysql-test/t/func_in.test @@ -109,4 +109,24 @@ select count(*) from t1 where id not in (1); select count(*) from t1 where id not in (1,2); drop table t1; -# End of 4.1 tests + +# +# BUG#17047: CHAR() and IN() can return NULL without signaling NULL +# result +# +# The problem was in the IN() function that ignored maybe_null flags +# of all arguments except the first (the one _before_ the IN +# keyword, '1' in the test case below). +# +--disable_warnings +DROP TABLE IF EXISTS t1; +--enable_warnings + +CREATE TABLE t1 SELECT 1 IN (2, NULL); +--echo SELECT should return NULL. +SELECT * FROM t1; + +DROP TABLE t1; + + +--echo End of 4.1 tests |