## Check on condition on different length keys.--disable_warningsdroptableifexistst1;--enable_warningsCREATETABLEt1(achar(5)NOTNULL,bchar(4)NOTNULL,KEY(a),KEY(b));INSERTINTOt1VALUES('A','B'),('b','A'),('C','c'),('D','E'),('a','a');select*fromt1,t1ast2;explainselectt1.*,t2.*fromt1,t1ast2wheret1.A=t2.B;#select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B;selectt1.*,t2.*fromt1,t1ast2wheret1.A=t2.Borderbybinaryt1.a,t2.a;select*fromt1wherea='a';droptablet1;# End of 4.1 tests