/*
* Copyright 1999-2017 Alibaba Group Holding Ltd.
*
* Licensed 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 com.alibaba.druid.bvt.sql.postgresql.select;
import com.alibaba.druid.sql.PGTest;
import com.alibaba.druid.sql.SQLUtils;
import com.alibaba.druid.sql.ast.SQLStatement;
import com.alibaba.druid.sql.dialect.postgresql.parser.PGSQLStatementParser;
import com.alibaba.druid.sql.dialect.postgresql.visitor.PGSchemaStatVisitor;
import org.junit.Assert;
import java.util.List;
public class PGSelectTest43 extends PGTest {
public void test_0() throws Exception {
String sql = "select task_id from mod_period_time where task_id in (SELECT task_id as b FROM mod_period_time order by task_id desc limit 1)";
PGSQLStatementParser parser = new PGSQLStatementParser(sql);
List<SQLStatement> statementList = parser.parseStatementList();
SQLStatement stmt = statementList.get(0);
Assert.assertEquals("SELECT task_id\n" +
"FROM mod_period_time\n" +
"WHERE task_id IN (SELECT task_id AS b\n" +
"\tFROM mod_period_time\n" +
"\tORDER BY task_id DESC\n" +
"\tLIMIT 1)", SQLUtils.toPGString(stmt));
Assert.assertEquals("select task_id\n" +
"from mod_period_time\n" +
"where task_id in (select task_id as b\n" +
"\tfrom mod_period_time\n" +
"\torder by task_id desc\n" +
"\tlimit 1)", SQLUtils.toPGString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION));
Assert.assertEquals(1, statementList.size());
PGSchemaStatVisitor visitor = new PGSchemaStatVisitor();
stmt.accept(visitor);
// System.out.println("Tables : " + visitor.getTables());
// System.out.println("fields : " + visitor.getColumns());
// System.out.println("coditions : " + visitor.getConditions());
Assert.assertEquals(1, visitor.getColumns().size());
Assert.assertEquals(1, visitor.getTables().size());
}
}