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package com.salesforce.phoenix.compile;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import java.sql.Connection;
import java.sql.DriverManager;
import org.junit.Test;
import com.salesforce.phoenix.compile.OrderByCompiler.OrderBy;
import com.salesforce.phoenix.jdbc.PhoenixStatement;
import com.salesforce.phoenix.query.BaseConnectionlessQueryTest;
import com.salesforce.phoenix.util.SchemaUtil;
public class QueryOptimizerTest extends BaseConnectionlessQueryTest {
public static final String SCHEMA_NAME = "";
public static final String DATA_TABLE_NAME = "T";
public static final String INDEX_TABLE_NAME = "I";
public static final String DATA_TABLE_FULL_NAME = SchemaUtil.getTableName(SCHEMA_NAME, "T");
public static final String INDEX_TABLE_FULL_NAME = SchemaUtil.getTableName(SCHEMA_NAME, "I");
public QueryOptimizerTest() {
}
@Test
public void testOrderByOptimizedOut() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE foo (k VARCHAR NOT NULL PRIMARY KEY, v VARCHAR) IMMUTABLE_ROWS=true");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT * FROM foo ORDER BY k");
assertEquals(OrderBy.FWD_ROW_KEY_ORDER_BY,plan.getOrderBy());
}
@Test
public void testOrderByDropped() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE foo (k VARCHAR NOT NULL PRIMARY KEY, v VARCHAR) IMMUTABLE_ROWS=true");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT * FROM foo ORDER BY 1,2,3");
assertEquals(OrderBy.EMPTY_ORDER_BY,plan.getOrderBy());
}
@Test
public void testOrderByNotDropped() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE foo (k VARCHAR NOT NULL PRIMARY KEY, v VARCHAR) IMMUTABLE_ROWS=true");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT * FROM foo ORDER BY v");
assertFalse(plan.getOrderBy().getOrderByExpressions().isEmpty());
}
@Test
public void testOrderByDroppedCompositeKey() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE foo (j INTEGER NOT NULL, k BIGINT NOT NULL, v VARCHAR CONSTRAINT pk PRIMARY KEY (j,k)) IMMUTABLE_ROWS=true");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT * FROM foo ORDER BY j,k");
assertEquals(OrderBy.FWD_ROW_KEY_ORDER_BY,plan.getOrderBy());
}
@Test
public void testOrderByNotDroppedCompositeKey() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE foo (j INTEGER NOT NULL, k BIGINT NOT NULL, v VARCHAR CONSTRAINT pk PRIMARY KEY (j,k)) IMMUTABLE_ROWS=true");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT * FROM foo ORDER BY k,j");
assertFalse(plan.getOrderBy().getOrderByExpressions().isEmpty());
}
@Test
public void testChooseIndexOverTable() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx ON t(v1)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT k FROM t WHERE v1 = 'bar'");
assertEquals("IDX", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testChooseTableOverIndex() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx ON t(v1)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT v1 FROM t WHERE k = 1");
assertEquals("T", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testChooseTableForSelection() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx ON t(v1)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT v1,v2 FROM t WHERE v1 = 'bar'");
// Choose T because v2 is not in index
assertEquals("T", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testChooseTableForDynCols() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx ON t(v1)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT k FROM t(v3 VARCHAR) WHERE v1 = 'bar'");
assertEquals("T", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testChooseTableForSelectionStar() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx ON t(v1)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT * FROM t WHERE v1 = 'bar'");
// Choose T because v2 is not in index
assertEquals("T", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testChooseIndexEvenWithSelectionStar() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx ON t(v1) INCLUDE (v2)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT * FROM t WHERE v1 = 'bar'");
assertEquals("IDX", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testChooseIndexFromOrderBy() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx ON t(v1)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT k FROM t WHERE k = 30 ORDER BY v1 LIMIT 5");
assertEquals("IDX", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testChooseIndexFromOrderByDesc() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY DESC, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx ON t(v1)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT k FROM t WHERE k = 30 ORDER BY v1, k DESC LIMIT 5");
assertEquals("IDX", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testChooseTableFromOrderByAsc() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY DESC, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx ON t(v1)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT k FROM t WHERE k = 30 ORDER BY v1, k LIMIT 5");
assertEquals("T", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testChooseIndexFromOrderByAsc() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY DESC, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx ON t(v1, k)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT k FROM t WHERE k = 30 ORDER BY v1, k LIMIT 5");
assertEquals("IDX", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testChooseIndexWithLongestRowKey() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx1 ON t(v1) INCLUDE(v2)");
conn.createStatement().execute("CREATE INDEX idx2 ON t(v1,v2)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT k FROM t WHERE v1 = 'foo' AND v2 = 'bar'");
assertEquals("IDX2", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testIgnoreIndexesBasedOnHint() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx1 ON t(v1) INCLUDE(v2)");
conn.createStatement().execute("CREATE INDEX idx2 ON t(v1,v2)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT /*+NO_INDEX*/ k FROM t WHERE v1 = 'foo' AND v2 = 'bar'");
assertEquals("T", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testChooseIndexFromHint() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx1 ON t(v1) INCLUDE(v2)");
conn.createStatement().execute("CREATE INDEX idx2 ON t(v1,v2)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT /*+ INDEX(t idx1) */ k FROM t WHERE v1 = 'foo' AND v2 = 'bar'");
assertEquals("IDX1", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testChooseIndexFromDoubleQuotedHint() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx1 ON t(v1) INCLUDE(v2)");
conn.createStatement().execute("CREATE INDEX idx2 ON t(v1,v2)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT /*+ INDEX(t \"IDX1\") INDEX(t idx3) */ k FROM t WHERE v1 = 'foo' AND v2 = 'bar'");
assertEquals("IDX1", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testIndexHintParsing() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx1 ON t(v1) INCLUDE(v2)");
conn.createStatement().execute("CREATE INDEX idx2 ON t(v1,v2)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT /*+ INDEX(t idx3 idx4 \"idx5\") INDEX(t idx6 idx1) */ k FROM t WHERE v1 = 'foo' AND v2 = 'bar'");
assertEquals("IDX1", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testChooseSmallerTable() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE t (k INTEGER NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR) IMMUTABLE_ROWS=true");
conn.createStatement().execute("CREATE INDEX idx ON t(v1)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
QueryPlan plan = stmt.optimizeQuery("SELECT count(*) FROM t");
assertEquals("IDX", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testRVCForTableWithSecondaryIndexBasic() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE T (k VARCHAR NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR)");
conn.createStatement().execute("CREATE INDEX IDX ON T(v1, v2)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
String query = "select * from t where (v1, v2) <= ('1', '2')";
QueryPlan plan = stmt.optimizeQuery(query);
assertEquals("IDX", plan.getTableRef().getTable().getTableName().getString());
}
@Test
public void testRVCAllColsForTableWithSecondaryIndexBasic() throws Exception {
Connection conn = DriverManager.getConnection(getUrl());
conn.createStatement().execute("CREATE TABLE T (k VARCHAR NOT NULL PRIMARY KEY, v1 VARCHAR, v2 VARCHAR)");
conn.createStatement().execute("CREATE INDEX IDX ON T(v1, v2)");
PhoenixStatement stmt = conn.createStatement().unwrap(PhoenixStatement.class);
String query = "select * from t where (k, v1, v2) <= ('3', '1', '2')";
QueryPlan plan = stmt.optimizeQuery(query);
assertEquals("T", plan.getTableRef().getTable().getTableName().getString());
}
}