| /* |
| * 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.phoenix.end2end; |
| |
| import static org.apache.phoenix.util.TestUtil.ROW6; |
| import static org.apache.phoenix.util.TestUtil.ROW7; |
| import static org.apache.phoenix.util.TestUtil.TEST_PROPERTIES; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.sql.Connection; |
| import java.sql.DriverManager; |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.util.Properties; |
| |
| import org.apache.phoenix.exception.SQLExceptionCode; |
| import org.apache.phoenix.util.PropertiesUtil; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| |
| public class CoalesceFunctionIT extends ParallelStatsDisabledIT { |
| |
| @Test |
| public void testCoalesce() throws Exception { |
| String tenantId = getOrganizationId(); |
| String tableName = initATableValues(tenantId, getDefaultSplits(tenantId), getUrl()); |
| Properties props = PropertiesUtil.deepCopy(TEST_PROPERTIES); |
| Connection conn = DriverManager.getConnection(getUrl(), props); |
| String query = "SELECT entity_id, a_integer + COALESCE(x_integer,1) FROM " + tableName + " WHERE organization_id = ? AND a_integer >= 6 AND a_integer <= 7"; |
| PreparedStatement statement = conn.prepareStatement(query); |
| statement.setString(1, tenantId); |
| ResultSet rs = statement.executeQuery(); |
| |
| assertTrue(rs.next()); |
| assertEquals(ROW6, rs.getString(1)); |
| assertEquals(7, rs.getInt(2)); |
| |
| assertTrue(rs.next()); |
| assertEquals(ROW7, rs.getString(1)); |
| assertEquals(12, rs.getInt(2)); |
| |
| assertFalse(rs.next()); |
| conn.close(); |
| } |
| |
| @Test |
| public void coalesceWithSumExplicitLong() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String tableName = generateUniqueName(); |
| String ddl = "CREATE TABLE " + tableName + "(" |
| + " ID BIGINT NOT NULL, " |
| + " \"COUNT\" BIGINT " |
| + " CONSTRAINT pk PRIMARY KEY(ID))"; |
| conn.createStatement().execute(ddl); |
| |
| conn.createStatement().execute("UPSERT INTO " + tableName + "(ID, \"COUNT\") VALUES(2, null)"); |
| conn.commit(); |
| |
| ResultSet rs = conn.createStatement().executeQuery( |
| "SELECT " |
| + "COALESCE(SUM(\"COUNT\"), CAST(0 AS BIGINT)) " //explicitly def long |
| + "FROM " + tableName |
| + " GROUP BY ID"); |
| |
| assertTrue(rs.next()); |
| assertEquals(0, rs.getLong(1)); |
| assertFalse(rs.wasNull()); |
| } |
| |
| @Test |
| public void coalesceWithSumImplicitLong() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String tableName = generateUniqueName(); |
| String ddl = "CREATE TABLE " + tableName + "(" |
| + " ID BIGINT NOT NULL, " |
| + " \"COUNT\" BIGINT " |
| + " CONSTRAINT pk PRIMARY KEY(ID))"; |
| conn.createStatement().execute(ddl); |
| |
| conn.createStatement().execute("UPSERT INTO " + tableName + "(ID, \"COUNT\") VALUES(2, null)"); |
| conn.commit(); |
| |
| ResultSet rs = conn.createStatement().executeQuery( |
| "SELECT " |
| + "COALESCE(SUM(\"COUNT\"), 0) " // no long def |
| + "FROM " + tableName |
| + " GROUP BY ID"); |
| |
| assertTrue(rs.next()); |
| assertEquals(0, rs.getLong(1)); |
| assertFalse(rs.wasNull()); |
| } |
| |
| @Test |
| public void coalesceWithSecondParamAsExpression() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String tableName = generateUniqueName(); |
| String ddl = "CREATE TABLE " + tableName + "(" |
| + " ID BIGINT NOT NULL, " |
| + " \"COUNT\" BIGINT " |
| + " CONSTRAINT pk PRIMARY KEY(ID))"; |
| conn.createStatement().execute(ddl); |
| |
| conn.createStatement().execute("UPSERT INTO " + tableName + "(ID, \"COUNT\") VALUES(2, null)"); |
| conn.commit(); |
| |
| ResultSet rs = conn.createStatement().executeQuery( |
| "SELECT " |
| + "COALESCE(SUM(\"COUNT\"), SUM(ID)) " // second param as expression |
| + "FROM " + tableName |
| + " GROUP BY ID"); |
| |
| assertTrue(rs.next()); |
| assertEquals(2, rs.getLong(1)); |
| assertFalse(rs.wasNull()); |
| } |
| |
| @Test |
| public void nonTypedSecondParameterLong() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String tableName = generateUniqueName(); |
| |
| String ddl = "CREATE TABLE " + tableName + "(" |
| + " ID BIGINT NOT NULL, " |
| + " \"COUNT\" BIGINT " //first parameter to coalesce |
| + " CONSTRAINT pk PRIMARY KEY(ID))"; |
| conn.createStatement().execute(ddl); |
| |
| conn.createStatement().execute("UPSERT INTO " + tableName + "(ID, \"COUNT\") VALUES(2, null)"); |
| conn.commit(); |
| |
| ResultSet rs = conn.createStatement().executeQuery( |
| "SELECT " |
| + "COALESCE(NTH_VALUE(\"COUNT\", 100) WITHIN GROUP (ORDER BY \"COUNT\" DESC), 0) " //second param is int |
| + "FROM " + tableName |
| + " GROUP BY ID"); |
| |
| assertTrue(rs.next()); |
| assertEquals(0, rs.getLong(1)); |
| assertFalse(rs.wasNull()); |
| } |
| |
| @Test |
| public void nonTypedSecondParameterUnsignedDataTypes() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String tableName = generateUniqueName(); |
| String ddl = "CREATE TABLE " + tableName + "(" |
| + " ID BIGINT NOT NULL, " |
| + " \"COUNT\" UNSIGNED_INT " //first parameter to coalesce |
| + " CONSTRAINT pk PRIMARY KEY(ID))"; |
| conn.createStatement().execute(ddl); |
| |
| conn.createStatement().execute("UPSERT INTO " + tableName + " (ID, \"COUNT\") VALUES(2, null)"); |
| conn.commit(); |
| |
| //second param to coalesce is signed int |
| ResultSet rs = conn.createStatement().executeQuery( |
| "SELECT " |
| + " COALESCE(NTH_VALUE(\"COUNT\", 100) WITHIN GROUP (ORDER BY COUNT DESC), 1) " |
| + " FROM " + tableName |
| + " GROUP BY ID"); |
| |
| assertTrue(rs.next()); |
| assertEquals(1, rs.getInt(1)); |
| assertFalse(rs.wasNull()); |
| } |
| |
| @Test |
| public void testWithNthValueAggregationFunction() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String tableName = generateUniqueName(); |
| |
| String ddl = "CREATE TABLE " + tableName + "(" |
| + " ID BIGINT NOT NULL, " |
| + " DATE TIMESTAMP NOT NULL, " |
| + " \"COUNT\" BIGINT " |
| + " CONSTRAINT pk PRIMARY KEY(ID, DATE))"; |
| conn.createStatement().execute(ddl); |
| |
| conn.createStatement().execute("UPSERT INTO " + tableName + "(ID, DATE, \"COUNT\") VALUES(1, CURRENT_TIME(), 1)"); |
| conn.createStatement().execute("UPSERT INTO " + tableName + "(ID, DATE, \"COUNT\") VALUES(1, CURRENT_TIME(), 2)"); |
| conn.createStatement().execute("UPSERT INTO " + tableName + "(ID, DATE, \"COUNT\") VALUES(2, CURRENT_TIME(), 1)"); |
| conn.commit(); |
| |
| //second param to coalesce is signed int |
| ResultSet rs = conn.createStatement().executeQuery( |
| "SELECT " |
| + " COALESCE(" |
| + " NTH_VALUE(\"COUNT\", 2000)" // should evaluate null |
| + " WITHIN GROUP (ORDER BY \"COUNT\" DESC)," |
| + " 0)" |
| + "FROM " + tableName |
| + " GROUP BY ID"); |
| |
| assertTrue(rs.next()); |
| assertEquals(0, rs.getLong(1)); |
| assertFalse(rs.wasNull()); |
| } |
| |
| @Test |
| public void wrongDataTypeOfSecondParameter() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String tableName = generateUniqueName(); |
| |
| String ddl = "CREATE TABLE " + tableName + "(" |
| + " ID UNSIGNED_INT NOT NULL, " |
| + " \"COUNT\" UNSIGNED_INT " |
| + " CONSTRAINT pk PRIMARY KEY(ID))"; |
| conn.createStatement().execute(ddl); |
| |
| conn.createStatement().execute("UPSERT INTO " + tableName + "(ID, \"COUNT\") VALUES(2, null)"); |
| conn.commit(); |
| |
| try { |
| conn.createStatement().executeQuery( |
| "SELECT " |
| + "COALESCE(MIN(\"COUNT\"), -1) " // invalid value for UNSIGNED_INT |
| + "FROM " + tableName |
| + " GROUP BY ID"); |
| |
| Assert.fail("CANNOT CONVERT TYPE exception expected"); |
| } catch (SQLException e) { |
| |
| } |
| } |
| |
| @Test |
| public void testImplicitSecondArgCastingException() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String tableName = generateUniqueName(); |
| |
| String ddl = "CREATE TABLE " + tableName + "(" |
| + " ID INTEGER NOT NULL, " |
| + " \"COUNT\" UNSIGNED_INT " //first parameter to coalesce |
| + " CONSTRAINT pk PRIMARY KEY(ID))"; |
| conn.createStatement().execute(ddl); |
| |
| conn.createStatement().execute("UPSERT INTO " + tableName + "(ID, \"COUNT\") VALUES(-2, null)"); |
| conn.commit(); |
| |
| try { |
| ResultSet rs = conn.createStatement().executeQuery( |
| "SELECT " |
| + "COALESCE(MIN(\"COUNT\"), ID) " |
| + "FROM " + tableName |
| + " GROUP BY ID"); |
| |
| assertTrue(rs.next()); |
| assertEquals(0, rs.getLong(1)); |
| fail("Should not cast -2 to UNSIGNED_INT"); |
| } catch (SQLException e) { |
| assertEquals(SQLExceptionCode.ILLEGAL_DATA.getErrorCode(), e.getErrorCode()); |
| } |
| } |
| |
| @Test |
| public void testImplicitSecondArgCasting() throws Exception { |
| Connection conn = DriverManager.getConnection(getUrl()); |
| String tableName = generateUniqueName(); |
| |
| String ddl = "CREATE TABLE " + tableName + "(" |
| + " ID DOUBLE NOT NULL, " |
| + " \"COUNT\" INTEGER " //first parameter to coalesce |
| + " CONSTRAINT pk PRIMARY KEY(ID))"; |
| conn.createStatement().execute(ddl); |
| |
| conn.createStatement().execute("UPSERT INTO " + tableName + "(ID, \"COUNT\") VALUES(2.0, null)"); |
| conn.commit(); |
| |
| ResultSet rs = conn.createStatement().executeQuery( |
| "SELECT " |
| + "COALESCE(MIN(\"COUNT\"), ID) " |
| + "FROM " + tableName |
| + " GROUP BY ID"); |
| |
| assertTrue(rs.next()); |
| assertEquals(2, rs.getLong(1)); |
| assertFalse(rs.wasNull()); |
| } |
| |
| @Test |
| public void testCoalesceInRowKeyColumn() throws Exception { |
| Properties props = PropertiesUtil.deepCopy(TEST_PROPERTIES); |
| Connection conn = DriverManager.getConnection(getUrl(), props); |
| String tableName = generateUniqueName(); |
| conn.createStatement().execute("CREATE TABLE " + tableName + "(k1 decimal, k2 decimal, constraint pk primary key (k1,k2))"); |
| conn.createStatement().execute("UPSERT INTO " + tableName + "(k2) VALUES (1)"); |
| conn.createStatement().execute("UPSERT INTO " + tableName + " VALUES (2,2)"); |
| conn.createStatement().execute("UPSERT INTO " + tableName + " VALUES (3,3)"); |
| conn.commit(); |
| |
| ResultSet rs = conn.createStatement().executeQuery("SELECT coalesce(k1, 1) ,k2 FROM " + tableName); |
| assertTrue(rs.next()); |
| assertEquals(1, rs.getInt(1)); |
| assertEquals(1, rs.getInt(2)); |
| assertTrue(rs.next()); |
| assertEquals(2, rs.getInt(1)); |
| assertEquals(2, rs.getInt(2)); |
| assertTrue(rs.next()); |
| assertEquals(3, rs.getInt(1)); |
| assertEquals(3, rs.getInt(2)); |
| assertFalse(rs.next()); |
| } |
| |
| |
| } |