tests/queries/loop_1.mrql

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

E = source(line,"../tests/data/points.txt",",",type( < X: double, Y: double > ));

repeat xx = select x from <X:x,Y:y> in E
step select (n,true) from x in xx group by n: x
limit 3;

repeat xx = {1,2}
step select x+1 from x in xx
limit 2;

repeat xx = {1,2}
step select (x+1,true) from x in xx
limit 2;

repeat xx = select x from <X:x,Y:y> in E
step select x+1 from x in xx
limit 2;

repeat xx = select x from <X:x,Y:y> in E
step select (x+1,true) from x in xx
limit 2;

repeat (xx,yy) = ({1,2},{3,4})
step ((select x+y from x in xx, y in yy),
      (select x*y from x in xx, y in yy))
limit 2;

repeat xx = {1,2}
step select (x+y as int) from x in xx, <X:*,Y:y> in E
limit 1;

repeat xx = {1,2}
step select (x+y as int,true) from x in xx, <X:*,Y:y> in E
limit 1;

repeat (xx,yy) = ((select x from <X:x,Y:y> in E where y < 10),
                  (select y from <X:x,Y:y> in E where x < 10))
step ((select x+y from x in xx, y in yy where x=y),
      (select x*y from x in xx, y in yy where x=y))
limit 2;