Hi Paul, I'm merging MySQL 5.1.46 into MariaDB. But I hit a test failure in PBXT, see below. It is wrong result from a SELECT. Interestingly, the same SELECT in the main test suite seems to work correctly. The code is in lp:~maria-captains/maria/5.1-release Can you maybe take a look, in case it is a PBXT issue? Probably also one of our optimiser people should take a look to see if it is a server problem. It's a bit strange that it seems to be pbxt specific, I'm wondering if there was a subtle change of the storage engine API introduced or something? Test failure link and output below. - Kristian. http://buildbot.askmonty.org/buildbot/reports/cross_reference#branch=5.1-release&revision=2855&platform=&dt=&bbnum=&typ=&info=&fail_name=pbxt.join&fail_variant=&fail_info_short=&fail_info_full=&limit=100 Test case pbxt.join pbxt.join w4 [ fail ] Test ended at 2010-04-28 22:47:39 CURRENT_TEST: pbxt.join --- /space3/buildbot/makedist/build/install/mysql-test/suite/pbxt/r/join.result 2010-04-28 22:12:50.000000000 +0200 +++ /space3/buildbot/makedist/build/install/mysql-test/suite/pbxt/r/join.reject 2010-04-28 22:47:39.000000000 +0200 @@ -59,14 +59,13 @@ 107 1 select t1.id,t2.id from t2 left join t1 on t1.id>=74 and t1.id<=0 where t2.id=75 and t1.id is null; id id -NULL 75 explain select t1.id,t2.id from t2 left join t1 on t1.id>=74 and t1.id<=0 where t2.id=75 and t1.id is null; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 const PRIMARY NULL NULL NULL 1 Impossible ON condition -1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables explain select t1.id, t2.id from t1, t2 where t2.id = t1.id and t1.id <0 and t1.id > 0; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where +1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.id 1 Using index drop table t1,t2; CREATE TABLE t1 ( id int(11) NOT NULL auto_increment, mysqltest: Result length mismatch