Edit File: odbc.result
drop table if exists t1; set @@session.sql_auto_is_null=1; select {fn length("hello")}, { date "1997-10-20" }; {fn length("hello")} 1997-10-20 5 1997-10-20 create table t1 (a int not null auto_increment,b int not null,primary key (a,b)); insert into t1 SET A=NULL,B=1; insert into t1 SET a=null,b=2; select * from t1 where a is null and b=2; a b select * from t1 where a is null; a b 2 2 explain select * from t1 where b is null; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE drop table t1; CREATE TABLE t1 (a INT AUTO_INCREMENT PRIMARY KEY); INSERT INTO t1 VALUES (NULL); SELECT sql_no_cache a, last_insert_id() FROM t1 WHERE a IS NULL; a last_insert_id() 1 1 SELECT sql_no_cache a, last_insert_id() FROM t1 WHERE a IS NULL; a last_insert_id() SELECT sql_no_cache a, last_insert_id() FROM t1; a last_insert_id() 1 1 DROP TABLE t1; set @@session.sql_auto_is_null=default;