| /* |
| * 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. |
| */ |
| |
| package org.apache.ignite.internal.processors.query; |
| |
| import java.util.List; |
| import org.apache.ignite.cache.query.SqlFieldsQuery; |
| import org.apache.ignite.internal.IgniteEx; |
| import org.apache.ignite.internal.processors.cache.index.AbstractIndexingCommonTest; |
| import org.junit.Test; |
| |
| /** |
| * Tests for schemas. |
| */ |
| public class SqlNestedQuerySelfTest extends AbstractIndexingCommonTest { |
| /** Node. */ |
| private IgniteEx node; |
| |
| /** {@inheritDoc} */ |
| @Override protected void beforeTest() throws Exception { |
| node = (IgniteEx)startGrid(); |
| |
| startGrid(2); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override protected void afterTest() throws Exception { |
| stopAllGrids(); |
| } |
| |
| /** |
| */ |
| @Test |
| public void testNestingQuery() { |
| sql("CREATE TABLE txs(txId INTEGER PRIMARY KEY, created INTEGER)"); |
| sql("CREATE TABLE ops(id INTEGER PRIMARY KEY, txId INTEGER, stage VARCHAR, tStamp INTEGER)"); |
| |
| sql("INSERT INTO txs(txId, created) VALUES (1, 599000), (2, 599111), (3, 599234)"); |
| sql("INSERT INTO ops(id, txId, stage, tStamp) VALUES" + |
| " (1, 1, 'NEW', 599686), (2, 1, 'OLD', 599722), (3, 1, 'OLD', 599736), (4, 2, 'NEW', 599767)"); |
| |
| sql("WITH cacheJoin (txId, stage, tStamp)" + |
| " AS (SELECT t.txId, o.stage, o.tStamp FROM txs t INNER JOIN ops o ON t.txId = o.txId)" + |
| " SELECT ou.stage, COUNT(*) as cou, SUM(CASE WHEN ou.stage = in.stage THEN 1 ELSE 0 END) AS ttl" + |
| " FROM (SELECT txId, stage FROM cacheJoin cte GROUP BY txId, stage) ou" + |
| " INNER JOIN (SELECT mx.txId, mx.stage FROM (SELECT txId, tStamp, stage FROM cacheJoin cte) mx" + |
| " INNER JOIN (SELECT txId, MAX(tStamp) AS maxTStamp FROM cacheJoin cte GROUP BY txId) mix" + |
| " ON mx.txId = mix.txId AND mx.tStamp = mix.maxTStamp) in ON ou.txId = in.txId" + |
| " GROUP BY ou.stage"); |
| } |
| |
| /** |
| * @param sql SQL query. |
| * @return Results. |
| */ |
| private List<List<?>> sql(String sql) { |
| GridQueryProcessor qryProc = node.context().query(); |
| |
| SqlFieldsQuery qry = new SqlFieldsQuery(sql).setSchema("PUBLIC"); |
| |
| return qryProc.querySqlFields(qry, true).getAll(); |
| } |
| } |