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/*
* 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);
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