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Diffstat (limited to 'mysql-test/t/func_compress.test')
| -rw-r--r-- | mysql-test/t/func_compress.test | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/mysql-test/t/func_compress.test b/mysql-test/t/func_compress.test index 4ae749f2343..eeb5d509b94 100644 --- a/mysql-test/t/func_compress.test +++ b/mysql-test/t/func_compress.test @@ -57,3 +57,17 @@ select uncompress(a), uncompressed_length(a) from t1; drop table t1; # End of 4.1 tests + +# +# Bug #18539: uncompress(d) is null: impossible? +# +create table t1 (a varchar(32) not null); +insert into t1 values ('foo'); +explain select * from t1 where uncompress(a) is null; +select * from t1 where uncompress(a) is null; +explain select *, uncompress(a) from t1; +select *, uncompress(a) from t1; +select *, uncompress(a), uncompress(a) is null from t1; +drop table t1; + +--echo End of 5.0 tests |