Test case for BUG#10646

The bug itself is fixed by WL #2486.

mysql-test/r/select.result

@@ -2775,3 +2775,8 @@ empnum	name	grp
 1	bob	1
 drop table t1,t2;
 drop view v1;
+create table t1 (pk int primary key, b int);
+create table t2 (pk int primary key, c int);
+select pk from t1 inner join t2 using (pk);
+pk
+drop table t1,t2;

mysql-test/t/select.test

@@ -2371,3 +2371,13 @@ create view v1 as select * from t2 inner join t1 using (empnum);
 select * from v1;
 drop table t1,t2;
 drop view v1;
+
+#
+# Bug #10646 Columns included in the join between two tables are ambigious
+# in the select
+#
+
+create table t1 (pk int primary key, b int);
+create table t2 (pk int primary key, c int);
+select pk from t1 inner join t2 using (pk);
+drop table t1,t2;