初版

build/lib/mysql/mysql-test/t/key_diff.test

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+#
+# Check on condition on different length keys.
+
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+
+CREATE TABLE t1 (
+  a char(5) NOT NULL,
+  b char(4) NOT NULL,
+  KEY (a),
+  KEY (b)
+);
+
+INSERT INTO t1 VALUES ('A','B'),('b','A'),('C','c'),('D','E'),('a','a');
+
+select * from t1,t1 as t2;
+explain select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B;
+#select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B;
+select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B order by binary t1.a,t2.a;
+select * from t1 where a='a';
+drop table t1;
+
+# End of 4.1 tests