complex join example for test suite

tests/client_test.c

@@ -8952,6 +8952,58 @@ TYPE=InnoDB DEFAULT CHARSET=utf8");
 }
 
 
+static void test_xjoin()
+{
+  MYSQL_STMT *stmt;
+  int rc, i;
+  const char *query=
+    "select t.id,p1.value, n1.value, p2.value, n2.value from t3 t LEFT JOIN t1 p1 ON (p1.id=t.param1_id) LEFT JOIN t2 p2 ON (p2.id=t.param2_id) LEFT JOIN t4 n1 ON (n1.id=p1.name_id) LEFT JOIN t4 n2 ON (n2.id=p2.name_id) where t.id=1";
+
+  myheader("test_xjoin");
+  
+  rc = mysql_query(mysql, "DROP TABLE IF EXISTS t1,t2,t3,t4");
+  myquery(rc);
+  
+  rc= mysql_query(mysql,"create table t3 (id int(8), param1_id int(8), param2_id int(8)) TYPE=InnoDB DEFAULT CHARSET=utf8");
+  myquery(rc);
+  
+  rc= mysql_query(mysql,"create table t1 ( id int(8), name_id int(8), value varchar(10)) TYPE=InnoDB DEFAULT CHARSET=utf8");
+  myquery(rc);
+
+  rc= mysql_query(mysql,"create table t2 (id int(8), name_id int(8), value varchar(10)) TYPE=InnoDB DEFAULT CHARSET=utf8;");
+  myquery(rc);
+
+  rc= mysql_query(mysql,"create table t4(id int(8), value varchar(10)) TYPE=InnoDB DEFAULT CHARSET=utf8");
+  myquery(rc);
+
+  rc= mysql_query(mysql, "insert into t3 values (1,1,1),(2,2,null)");
+  myquery(rc);
+  
+  rc= mysql_query(mysql, "insert into t1 values (1,1,'aaa'),(2,null,'bbb')");
+  myquery(rc);
+
+  rc= mysql_query(mysql,"insert into t2 values (1,2,'ccc')");
+  myquery(rc);
+
+  rc= mysql_query(mysql, "insert into t4 values (1,'Name1'),(2,null)");
+  myquery(rc);
+
+  stmt= mysql_prepare(mysql, query, strlen(query));
+  mystmt_init(stmt);
+
+  for (i= 0; i < 3; i++)
+  {
+    rc= mysql_execute(stmt);
+    mystmt(stmt, rc);
+    assert(1 == my_process_stmt_result(stmt));
+  }
+  mysql_stmt_close(stmt);
+
+  rc= mysql_query(mysql, "DROP TABLE t1,t2,t3,t4");
+  myquery(rc);
+}
+
+
 /*
   Read and parse arguments and MySQL options from my.cnf
 */
@@ -9220,6 +9272,7 @@ int main(int argc, char **argv)
     test_insert_select();   /* test INSERT ... SELECT */
     test_bind_nagative();   /* bind negative to unsigned BUG#3223 */
     test_derived();	    /* derived table with parameter BUG#3020 */
+    test_xjoin();	    /* complex join test */
 
     end_time= time((time_t *)0);
     total_time+= difftime(end_time, start_time);