| /* |
| * 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. |
| */ |
| |
| LOAD 'age'; |
| SET search_path TO ag_catalog; |
| |
| SELECT create_graph('cypher_union'); |
| |
| SELECT * FROM cypher('cypher_union', $$CREATE ()$$) as (a agtype); |
| |
| |
| SELECT * FROM cypher('cypher_union', $$MATCH (n) RETURN n UNION MATCH (n) RETURN n$$) as (a agtype); |
| |
| SELECT * FROM cypher('cypher_union', $$MATCH (n) RETURN n UNION ALL MATCH (n) RETURN n$$) as (a agtype); |
| |
| SELECT * FROM cypher('cypher_union', $$MATCH (n) RETURN n UNION RETURN 1$$) as (a agtype); |
| |
| SELECT * FROM cypher('cypher_union', $$MATCH (n) RETURN n UNION RETURN NULL$$) as (a agtype); |
| |
| SELECT * FROM cypher('cypher_union', $$RETURN [1,2,3] UNION RETURN 1$$) as (a agtype); |
| |
| /*should return 1 row*/ |
| SELECT * FROM cypher('cypher_union', $$RETURN NULL UNION RETURN NULL$$) AS (result agtype); |
| |
| /*should return 2 rows*/ |
| SELECT * FROM cypher('cypher_union', $$RETURN NULL UNION ALL RETURN NULL$$) AS (result agtype); |
| |
| /* |
| *multiple unions, precedence |
| */ |
| SELECT * FROM cypher('cypher_union', $$MATCH (n) RETURN n UNION MATCH (n) RETURN n UNION MATCH (n) RETURN n$$) AS (result agtype); |
| |
| /*should return triple*/ |
| SELECT * FROM cypher('cypher_union', $$MATCH (n) RETURN n UNION ALL MATCH (n) RETURN n UNION ALL MATCH(n) RETURN n$$) AS (result agtype); |
| |
| /*should return single*/ |
| SELECT * FROM cypher('cypher_union', $$MATCH (n) RETURN n UNION ALL MATCH (n) RETURN n UNION MATCH(n) RETURN n$$) AS (result agtype); |
| |
| /*should return just a pair*/ |
| SELECT * FROM cypher('cypher_union', $$MATCH (n) RETURN n UNION MATCH (n) RETURN n UNION ALL MATCH(n) RETURN n$$) AS (result agtype); |
| |
| /*should return 3 null rows*/ |
| SELECT * FROM cypher('cypher_union', $$RETURN NULL UNION ALL RETURN NULL UNION ALL RETURN NULL$$) AS (result agtype); |
| |
| /*should return 1 null row*/ |
| SELECT * FROM cypher('cypher_union', $$RETURN NULL UNION ALL RETURN NULL UNION RETURN NULL$$) AS (result agtype); |
| |
| /*should return 2 null rows*/ |
| SELECT * FROM cypher('cypher_union', $$RETURN NULL UNION RETURN NULL UNION ALL RETURN NULL$$) AS (result agtype); |
| |
| /* scoping */ |
| SELECT * FROM cypher('cypher_union', $$MATCH (n) RETURN n UNION ALL MATCH (m) RETURN n$$) AS (result agtype); |
| |
| /* |
| *UNION and UNION ALL, type casting |
| */ |
| SELECT * FROM cypher('cypher_union', $$RETURN 1.0::int UNION RETURN 1::float UNION ALL RETURN 2.0::float$$) AS (result agtype); |
| |
| SELECT * FROM cypher('cypher_union', $$RETURN 1.0::int UNION RETURN 1.0::float UNION ALL RETURN 1::int$$) AS (result agtype); |
| |
| SELECT * FROM cypher('cypher_union', $$RETURN 1.0::float UNION RETURN 1::int UNION RETURN 1::float$$) AS (result agtype); |
| |
| |
| SELECT drop_graph('cypher_union', true); |