| /* |
| * 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.drill.exec.work.prepare; |
| |
| import java.sql.Date; |
| import java.util.List; |
| |
| import org.apache.drill.common.types.Types; |
| import org.apache.drill.exec.proto.UserBitShared.DrillPBError.ErrorType; |
| import org.apache.drill.exec.proto.UserProtos.PreparedStatement; |
| import org.junit.Test; |
| |
| import com.google.common.collect.ImmutableList; |
| |
| /** |
| * Tests for creating and executing prepared statements. |
| */ |
| public class TestPreparedStatementProvider extends PreparedStatementTestBase { |
| |
| /** |
| * Simple query. |
| * @throws Exception |
| */ |
| @Test |
| public void simple() throws Exception { |
| String query = "SELECT * FROM cp.`region.json` ORDER BY region_id LIMIT 1"; |
| PreparedStatement preparedStatement = createPrepareStmt(query, false, null); |
| |
| List<ExpectedColumnResult> expMetadata = ImmutableList.of( |
| new ExpectedColumnResult("region_id", "BIGINT", true, 20, 0, 0, true, Long.class.getName()), |
| new ExpectedColumnResult("sales_city", "CHARACTER VARYING", true, Types.MAX_VARCHAR_LENGTH, Types.MAX_VARCHAR_LENGTH, 0, false, String.class.getName()), |
| new ExpectedColumnResult("sales_state_province", "CHARACTER VARYING", true, Types.MAX_VARCHAR_LENGTH, Types.MAX_VARCHAR_LENGTH, 0, false, String.class.getName()), |
| new ExpectedColumnResult("sales_district", "CHARACTER VARYING", true, Types.MAX_VARCHAR_LENGTH, Types.MAX_VARCHAR_LENGTH, 0, false, String.class.getName()), |
| new ExpectedColumnResult("sales_region", "CHARACTER VARYING", true, Types.MAX_VARCHAR_LENGTH, Types.MAX_VARCHAR_LENGTH, 0, false, String.class.getName()), |
| new ExpectedColumnResult("sales_country", "CHARACTER VARYING", true, Types.MAX_VARCHAR_LENGTH, Types.MAX_VARCHAR_LENGTH, 0, false, String.class.getName()), |
| new ExpectedColumnResult("sales_district_id", "BIGINT", true, 20, 0, 0, true, Long.class.getName()) |
| ); |
| |
| verifyMetadata(expMetadata, preparedStatement.getColumnsList()); |
| |
| testBuilder() |
| .unOrdered() |
| .preparedStatement(preparedStatement.getServerHandle()) |
| .baselineColumns("region_id", "sales_city", "sales_state_province", "sales_district", |
| "sales_region", "sales_country", "sales_district_id") |
| .baselineValues(0L, "None", "None", "No District", "No Region", "No Country", 0L) |
| .go(); |
| } |
| |
| /** |
| * Create a prepared statement for a query that has GROUP BY clause in it |
| */ |
| @Test |
| public void groupByQuery() throws Exception { |
| String query = "SELECT sales_city, count(*) as cnt FROM cp.`region.json` " + |
| "GROUP BY sales_city ORDER BY sales_city DESC LIMIT 1"; |
| PreparedStatement preparedStatement = createPrepareStmt(query, false, null); |
| |
| List<ExpectedColumnResult> expMetadata = ImmutableList.of( |
| new ExpectedColumnResult("sales_city", "CHARACTER VARYING", true, Types.MAX_VARCHAR_LENGTH, Types.MAX_VARCHAR_LENGTH, 0, false, String.class.getName()), |
| new ExpectedColumnResult("cnt", "BIGINT", false, 20, 0, 0, true, Long.class.getName()) |
| ); |
| |
| verifyMetadata(expMetadata, preparedStatement.getColumnsList()); |
| |
| testBuilder() |
| .unOrdered() |
| .preparedStatement(preparedStatement.getServerHandle()) |
| .baselineColumns("sales_city", "cnt") |
| .baselineValues("Yakima", 1L) |
| .go(); |
| } |
| |
| /** |
| * Create a prepared statement for a query that joins two tables and has ORDER BY clause. |
| */ |
| @Test |
| public void joinOrderByQuery() throws Exception { |
| String query = "SELECT l.l_quantity, l.l_shipdate, o.o_custkey FROM cp.`tpch/lineitem.parquet` l JOIN cp.`tpch/orders.parquet` o " + |
| "ON l.l_orderkey = o.o_orderkey LIMIT 2"; |
| |
| PreparedStatement preparedStatement = createPrepareStmt(query, false, null); |
| |
| List<ExpectedColumnResult> expMetadata = ImmutableList.of( |
| new ExpectedColumnResult("l_quantity", "DOUBLE", false, 24, 0, 0, true, Double.class.getName()), |
| new ExpectedColumnResult("l_shipdate", "DATE", false, 10, 0, 0, false, Date.class.getName()), |
| new ExpectedColumnResult("o_custkey", "INTEGER", false, 11, 0, 0, true, Integer.class.getName()) |
| ); |
| |
| verifyMetadata(expMetadata, preparedStatement.getColumnsList()); |
| } |
| |
| /** |
| * Pass an invalid query to the create prepare statement request and expect a parser failure. |
| * @throws Exception |
| */ |
| @Test |
| public void invalidQueryParserError() throws Exception { |
| createPrepareStmt("BLAH BLAH", true, ErrorType.PARSE); |
| } |
| |
| /** |
| * Pass an invalid query to the create prepare statement request and expect a validation failure. |
| * @throws Exception |
| */ |
| @Test |
| public void invalidQueryValidationError() throws Exception { |
| // CALCITE-1120 allows SELECT without from syntax. |
| // So with this change the query fails with VALIDATION error. |
| createPrepareStmt("SELECT * sdflkgdh", true, |
| ErrorType.VALIDATION /* Drill returns incorrect error for parse error*/); |
| } |
| } |