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new 7f29869 [IOTDB-1823] Support group by multi level (#4132)
7f29869 is described below
commit 7f298690cdfea2ff95d576d6f463ac772c95e0da
Author: Xiangwei Wei <[email protected]>
AuthorDate: Mon Oct 18 19:12:21 2021 +0800
[IOTDB-1823] Support group by multi level (#4132)
---
.../antlr4/org/apache/iotdb/db/qp/sql/SqlBase.g4 | 6 +-
.../qp/logical/crud/AggregationQueryOperator.java | 3 +-
.../iotdb/db/qp/logical/crud/QueryOperator.java | 22 ++-
.../db/qp/logical/crud/SpecialClauseComponent.java | 21 +-
.../iotdb/db/qp/physical/crud/AggregationPlan.java | 81 ++++----
.../iotdb/db/qp/physical/crud/QueryPlan.java | 8 +-
.../apache/iotdb/db/qp/sql/IoTDBSqlVisitor.java | 49 +++--
.../qp/strategy/optimizer/ConcatPathOptimizer.java | 18 +-
.../iotdb/db/qp/utils/GroupByLevelController.java | 150 ++++++++++++++
.../apache/iotdb/db/qp/utils/WildcardsRemover.java | 1 -
.../dataset/groupby/GroupByEngineDataSet.java | 6 +
...ByTimeDataSet.java => GroupByLevelDataSet.java} | 59 +++---
.../groupby/GroupByWithValueFilterDataSet.java | 26 ++-
.../groupby/GroupByWithoutValueFilterDataSet.java | 25 +--
.../db/query/executor/AggregationExecutor.java | 33 ++--
.../iotdb/db/query/executor/QueryRouter.java | 21 +-
.../query/expression/unary/FunctionExpression.java | 7 +
.../org/apache/iotdb/db/service/TSServiceImpl.java | 15 +-
.../org/apache/iotdb/db/utils/AggregateUtils.java | 169 ----------------
.../db/integration/IoTDBContinuousQueryIT.java | 12 +-
.../aggregation/IoTDBAggregationByLevelIT.java | 218 ++++++++++++++++++---
21 files changed, 589 insertions(+), 361 deletions(-)
diff --git a/antlr/src/main/antlr4/org/apache/iotdb/db/qp/sql/SqlBase.g4
b/antlr/src/main/antlr4/org/apache/iotdb/db/qp/sql/SqlBase.g4
index 26b976f..7787942 100644
--- a/antlr/src/main/antlr4/org/apache/iotdb/db/qp/sql/SqlBase.g4
+++ b/antlr/src/main/antlr4/org/apache/iotdb/db/qp/sql/SqlBase.g4
@@ -302,7 +302,7 @@ groupByTimeClause
COMMA DURATION
(COMMA DURATION)?
RR_BRACKET
- COMMA LEVEL OPERATOR_EQ INT
+ COMMA LEVEL OPERATOR_EQ INT (COMMA INT)*
;
groupByFillClause
@@ -314,7 +314,7 @@ groupByFillClause
;
groupByLevelClause
- : GROUP BY LEVEL OPERATOR_EQ INT
+ : GROUP BY LEVEL OPERATOR_EQ INT (COMMA INT)*
;
typeClause
@@ -369,7 +369,7 @@ cqGroupByTimeClause
: GROUP BY TIME LR_BRACKET
DURATION
RR_BRACKET
- (COMMA LEVEL OPERATOR_EQ INT)?
+ (COMMA LEVEL OPERATOR_EQ INT (COMMA INT)*)?
;
comparisonOperator
diff --git
a/server/src/main/java/org/apache/iotdb/db/qp/logical/crud/AggregationQueryOperator.java
b/server/src/main/java/org/apache/iotdb/db/qp/logical/crud/AggregationQueryOperator.java
index f21c5a8..139c6b7 100644
---
a/server/src/main/java/org/apache/iotdb/db/qp/logical/crud/AggregationQueryOperator.java
+++
b/server/src/main/java/org/apache/iotdb/db/qp/logical/crud/AggregationQueryOperator.java
@@ -116,7 +116,8 @@ public class AggregationQueryOperator extends QueryOperator
{
AggregationPlan aggregationPlan = (AggregationPlan) queryPlan;
aggregationPlan.setAggregations(selectComponent.getAggregationFunctions());
if (isGroupByLevel()) {
- aggregationPlan.setLevel(specialClauseComponent.getLevel());
+ aggregationPlan.setLevels(specialClauseComponent.getLevels());
+
aggregationPlan.setGroupByLevelController(specialClauseComponent.groupByLevelController);
try {
if (!verifyAllAggregationDataTypesEqual()) {
throw new LogicalOperatorException("Aggregate among unmatched data
types");
diff --git
a/server/src/main/java/org/apache/iotdb/db/qp/logical/crud/QueryOperator.java
b/server/src/main/java/org/apache/iotdb/db/qp/logical/crud/QueryOperator.java
index 65184ae..c0afd30 100644
---
a/server/src/main/java/org/apache/iotdb/db/qp/logical/crud/QueryOperator.java
+++
b/server/src/main/java/org/apache/iotdb/db/qp/logical/crud/QueryOperator.java
@@ -149,7 +149,27 @@ public class QueryOperator extends Operator {
}
public boolean isGroupByLevel() {
- return specialClauseComponent != null && specialClauseComponent.getLevel()
!= -1;
+ return specialClauseComponent != null &&
specialClauseComponent.getLevels() != null;
+ }
+
+ public int[] getLevels() {
+ return specialClauseComponent.getLevels();
+ }
+
+ public boolean hasSlimit() {
+ return specialClauseComponent != null &&
specialClauseComponent.hasSlimit();
+ }
+
+ public boolean hasSoffset() {
+ return specialClauseComponent != null &&
specialClauseComponent.hasSoffset();
+ }
+
+ /** Reset sLimit and sOffset to zero. */
+ public void resetSLimitOffset() {
+ if (specialClauseComponent != null) {
+ specialClauseComponent.setSeriesLimit(0);
+ specialClauseComponent.setSeriesOffset(0);
+ }
}
public void check() throws LogicalOperatorException {
diff --git
a/server/src/main/java/org/apache/iotdb/db/qp/logical/crud/SpecialClauseComponent.java
b/server/src/main/java/org/apache/iotdb/db/qp/logical/crud/SpecialClauseComponent.java
index f935433..d43b140 100644
---
a/server/src/main/java/org/apache/iotdb/db/qp/logical/crud/SpecialClauseComponent.java
+++
b/server/src/main/java/org/apache/iotdb/db/qp/logical/crud/SpecialClauseComponent.java
@@ -19,6 +19,8 @@
package org.apache.iotdb.db.qp.logical.crud;
+import org.apache.iotdb.db.qp.utils.GroupByLevelController;
+
public class SpecialClauseComponent {
protected int rowLimit = 0;
@@ -32,7 +34,8 @@ public class SpecialClauseComponent {
// if true, we don't need the row whose all columns are null
protected boolean withoutAllNull;
- protected int level = -1;
+ protected GroupByLevelController groupByLevelController;
+ protected int[] levels;
protected boolean isAlignByDevice = false;
protected boolean isAlignByTime = true;
@@ -79,6 +82,10 @@ public class SpecialClauseComponent {
return seriesLimit > 0;
}
+ public boolean hasSoffset() {
+ return seriesOffset > 0;
+ }
+
public boolean isAscending() {
return ascending;
}
@@ -103,12 +110,16 @@ public class SpecialClauseComponent {
this.withoutAllNull = withoutAllNull;
}
- public int getLevel() {
- return level;
+ public int[] getLevels() {
+ return levels;
+ }
+
+ public void setLevels(int[] levels) {
+ this.levels = levels;
}
- public void setLevel(int level) {
- this.level = level;
+ public void setGroupByLevelController(GroupByLevelController
groupByLevelController) {
+ this.groupByLevelController = groupByLevelController;
}
public boolean isAlignByDevice() {
diff --git
a/server/src/main/java/org/apache/iotdb/db/qp/physical/crud/AggregationPlan.java
b/server/src/main/java/org/apache/iotdb/db/qp/physical/crud/AggregationPlan.java
index c3f3a30..cc51bbd 100644
---
a/server/src/main/java/org/apache/iotdb/db/qp/physical/crud/AggregationPlan.java
+++
b/server/src/main/java/org/apache/iotdb/db/qp/physical/crud/AggregationPlan.java
@@ -18,14 +18,10 @@
*/
package org.apache.iotdb.db.qp.physical.crud;
-import org.apache.iotdb.db.exception.metadata.IllegalPathException;
-import org.apache.iotdb.db.exception.query.QueryProcessException;
import org.apache.iotdb.db.metadata.PartialPath;
import org.apache.iotdb.db.qp.logical.Operator;
+import org.apache.iotdb.db.qp.utils.GroupByLevelController;
import org.apache.iotdb.db.query.aggregation.AggregateResult;
-import org.apache.iotdb.db.query.factory.AggregateResultFactory;
-import org.apache.iotdb.db.utils.AggregateUtils;
-import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
import java.util.ArrayList;
import java.util.LinkedHashMap;
@@ -41,9 +37,10 @@ public class AggregationPlan extends RawDataQueryPlan {
private List<String> aggregations = new ArrayList<>();
private List<String> deduplicatedAggregations = new ArrayList<>();
- private int level = -1;
+ private int[] levels;
+ private GroupByLevelController groupByLevelController;
// group by level aggregation result path
- private final Map<String, AggregateResult> levelAggPaths = new
LinkedHashMap<>();
+ private final Map<String, AggregateResult> groupPathsResultMap = new
LinkedHashMap<>();
public AggregationPlan() {
super();
@@ -71,36 +68,47 @@ public class AggregationPlan extends RawDataQueryPlan {
this.deduplicatedAggregations = deduplicatedAggregations;
}
- public int getLevel() {
- return level;
+ public int[] getLevels() {
+ return levels;
}
- public void setLevel(int level) {
- this.level = level;
+ public void setLevels(int[] levels) {
+ this.levels = levels;
}
- public Map<String, AggregateResult> getAggPathByLevel() throws
QueryProcessException {
- if (!levelAggPaths.isEmpty()) {
- return levelAggPaths;
+ public void setGroupByLevelController(GroupByLevelController
groupByLevelController) {
+ this.groupByLevelController = groupByLevelController;
+ }
+
+ public Map<String, AggregateResult> getGroupPathsResultMap() {
+ return groupPathsResultMap;
+ }
+
+ public Map<String, AggregateResult> groupAggResultByLevel(
+ List<AggregateResult> aggregateResults) {
+ if (!groupPathsResultMap.isEmpty()) {
+ groupPathsResultMap.clear();
}
- List<PartialPath> seriesPaths = getPaths();
- List<TSDataType> dataTypes = getDataTypes();
- try {
- for (int i = 0; i < seriesPaths.size(); i++) {
- String transformedPath =
-
AggregateUtils.generatePartialPathByLevel(seriesPaths.get(i).getFullPath(),
getLevel());
- String key = getAggregations().get(i) + "(" + transformedPath + ")";
- if (!levelAggPaths.containsKey(key)) {
- AggregateResult aggRet =
- AggregateResultFactory.getAggrResultByName(
- getAggregations().get(i), dataTypes.get(i));
- levelAggPaths.put(key, aggRet);
- }
+ for (int i = 0; i < paths.size(); i++) {
+ String rawPath =
+ String.format(
+ "%s(%s)",
+ deduplicatedAggregations.get(i),
getDeduplicatedPaths().get(i).getExactFullPath());
+ String transformedPath = groupByLevelController.getGroupedPath(rawPath);
+ AggregateResult result = groupPathsResultMap.get(transformedPath);
+ if (result == null) {
+ groupPathsResultMap.put(transformedPath, aggregateResults.get(i));
+ } else {
+ result.merge(aggregateResults.get(i));
+ groupPathsResultMap.put(transformedPath, result);
}
- } catch (IllegalPathException e) {
- throw new QueryProcessException(e.getMessage());
}
- return levelAggPaths;
+ return groupPathsResultMap;
+ }
+
+ @Override
+ public boolean isGroupByLevel() {
+ return levels != null;
}
@Override
@@ -109,16 +117,15 @@ public class AggregationPlan extends RawDataQueryPlan {
}
@Override
- public String getColumnForDisplay(String columnForReader, int pathIndex)
- throws IllegalPathException {
+ public String getColumnForDisplay(String columnForReader, int pathIndex) {
String columnForDisplay = columnForReader;
- if (level >= 0) {
+ if (isGroupByLevel()) {
PartialPath path = paths.get(pathIndex);
+ String functionName = aggregations.get(pathIndex);
String aggregatePath =
- path.isMeasurementAliasExists()
- ?
AggregateUtils.generatePartialPathByLevel(path.getFullPathWithAlias(), level)
- : AggregateUtils.generatePartialPathByLevel(path.toString(),
level);
- columnForDisplay = aggregations.get(pathIndex) + "(" + aggregatePath +
")";
+ groupByLevelController.getGroupedPath(
+ String.format("%s(%s)", functionName, path.getExactFullPath()));
+ columnForDisplay = aggregatePath;
}
return columnForDisplay;
}
diff --git
a/server/src/main/java/org/apache/iotdb/db/qp/physical/crud/QueryPlan.java
b/server/src/main/java/org/apache/iotdb/db/qp/physical/crud/QueryPlan.java
index 30c2fcd..1b99594 100644
--- a/server/src/main/java/org/apache/iotdb/db/qp/physical/crud/QueryPlan.java
+++ b/server/src/main/java/org/apache/iotdb/db/qp/physical/crud/QueryPlan.java
@@ -18,7 +18,6 @@
*/
package org.apache.iotdb.db.qp.physical.crud;
-import org.apache.iotdb.db.exception.metadata.IllegalPathException;
import org.apache.iotdb.db.exception.metadata.MetadataException;
import org.apache.iotdb.db.metadata.PartialPath;
import org.apache.iotdb.db.qp.logical.Operator;
@@ -115,6 +114,10 @@ public abstract class QueryPlan extends PhysicalPlan {
pathToIndex.put(columnName, index);
}
+ public boolean isGroupByLevel() {
+ return false;
+ }
+
public void setPathToIndex(Map<String, Integer> pathToIndex) {
this.pathToIndex = pathToIndex;
}
@@ -136,8 +139,7 @@ public abstract class QueryPlan extends PhysicalPlan {
return resultColumn.hasAlias() ? resultColumn.getAlias() :
path.getExactFullPath();
}
- public String getColumnForDisplay(String columnForReader, int pathIndex)
- throws IllegalPathException {
+ public String getColumnForDisplay(String columnForReader, int pathIndex) {
return resultColumns.get(pathIndex).getResultColumnName();
}
diff --git
a/server/src/main/java/org/apache/iotdb/db/qp/sql/IoTDBSqlVisitor.java
b/server/src/main/java/org/apache/iotdb/db/qp/sql/IoTDBSqlVisitor.java
index a944007..e12caa1 100644
--- a/server/src/main/java/org/apache/iotdb/db/qp/sql/IoTDBSqlVisitor.java
+++ b/server/src/main/java/org/apache/iotdb/db/qp/sql/IoTDBSqlVisitor.java
@@ -273,6 +273,7 @@ import org.antlr.v4.runtime.tree.TerminalNode;
import java.io.File;
import java.time.ZoneId;
import java.util.ArrayList;
+import java.util.Arrays;
import java.util.Collections;
import java.util.EnumMap;
import java.util.HashMap;
@@ -1160,11 +1161,11 @@ public class IoTDBSqlVisitor extends
SqlBaseBaseVisitor<Operator> {
}
private PartialPath parseIntoPath(IntoPathContext intoPathContext) {
- int levelLimitOfSourcePrefixPath =
- queryOp.getSpecialClauseComponent() != null
- ? queryOp.getSpecialClauseComponent().getLevel()
- : -1;
- if (levelLimitOfSourcePrefixPath == -1) {
+ int levelLimitOfSourcePrefixPath;
+ if (queryOp.isGroupByLevel()) {
+ levelLimitOfSourcePrefixPath =
+
Arrays.stream(queryOp.getSpecialClauseComponent().getLevels()).max().getAsInt();
+ } else {
levelLimitOfSourcePrefixPath =
queryOp.getFromComponent().getPrefixPaths().get(0).getNodeLength() -
1;
}
@@ -1262,7 +1263,11 @@ public class IoTDBSqlVisitor extends
SqlBaseBaseVisitor<Operator> {
sb.append(")");
if (queryOp.isGroupByLevel()) {
sb.append(", level = ");
- sb.append(queryOp.getSpecialClauseComponent().getLevel());
+ int[] levels = queryOp.getSpecialClauseComponent().getLevels();
+ sb.append(levels[0]);
+ for (int i = 1; i < levels.length; i++) {
+ sb.append(String.format(", %d", levels[i]));
+ }
}
createContinuousQueryOperator.setQuerySql(sb.toString());
@@ -1319,10 +1324,12 @@ public class IoTDBSqlVisitor extends
SqlBaseBaseVisitor<Operator> {
parseCqGroupByTimeClause(ctx.cqGroupByTimeClause());
- int groupByQueryLevel = queryOp.getSpecialClauseComponent().getLevel();
- int fromPrefixLevelLimit =
queryOp.getFromComponent().getPrefixPaths().get(0).getNodeLength();
- if (groupByQueryLevel >= fromPrefixLevelLimit) {
- throw new SQLParserException("CQ: Level should not exceed the
<from_prefix> length.");
+ if (queryOp.isGroupByLevel()) {
+ int[] groupByQueryLevels =
queryOp.getSpecialClauseComponent().getLevels();
+ int fromPrefixLevelLimit =
queryOp.getFromComponent().getPrefixPaths().get(0).getNodeLength();
+ if (Arrays.stream(groupByQueryLevels).max().getAsInt() >=
fromPrefixLevelLimit) {
+ throw new SQLParserException("CQ: Level should not exceed the
<from_prefix> length.");
+ }
}
createContinuousQueryOperator.setTargetPath(parseIntoPath(ctx.intoPath()));
@@ -1342,7 +1349,11 @@ public class IoTDBSqlVisitor extends
SqlBaseBaseVisitor<Operator> {
groupByClauseComponent.setLeftCRightO(true);
if (ctx.LEVEL() != null && ctx.INT() != null) {
- groupByClauseComponent.setLevel(Integer.parseInt(ctx.INT().getText()));
+ int[] levels = new int[ctx.INT().size()];
+ for (int i = 0; i < ctx.INT().size(); i++) {
+ levels[i] = Integer.parseInt(ctx.INT().get(i).getText());
+ }
+ groupByClauseComponent.setLevels(levels);
}
queryOp.setSpecialClauseComponent(groupByClauseComponent);
@@ -1643,7 +1654,12 @@ public class IoTDBSqlVisitor extends
SqlBaseBaseVisitor<Operator> {
public void parseGroupByLevelClause(GroupByLevelClauseContext ctx) {
SpecialClauseComponent groupByLevelClauseComponent = new
SpecialClauseComponent();
-
groupByLevelClauseComponent.setLevel(Integer.parseInt(ctx.INT().getText()));
+ int[] levels = new int[ctx.INT().size()];
+ for (int i = 0; i < ctx.INT().size(); i++) {
+ levels[i] = Integer.parseInt(ctx.INT().get(i).getText());
+ }
+ groupByLevelClauseComponent.setLevels(levels);
+
queryOp.setSpecialClauseComponent(groupByLevelClauseComponent);
}
@@ -1805,9 +1821,14 @@ public class IoTDBSqlVisitor extends
SqlBaseBaseVisitor<Operator> {
parseTimeInterval(ctx.timeInterval(), groupByClauseComponent);
- if (ctx.INT() != null) {
- groupByClauseComponent.setLevel(Integer.parseInt(ctx.INT().getText()));
+ if (ctx.LEVEL() != null && ctx.INT() != null) {
+ int[] levels = new int[ctx.INT().size()];
+ for (int i = 0; i < ctx.INT().size(); i++) {
+ levels[i] = Integer.parseInt(ctx.INT().get(i).getText());
+ }
+ groupByClauseComponent.setLevels(levels);
}
+
queryOp.setSpecialClauseComponent(groupByClauseComponent);
}
diff --git
a/server/src/main/java/org/apache/iotdb/db/qp/strategy/optimizer/ConcatPathOptimizer.java
b/server/src/main/java/org/apache/iotdb/db/qp/strategy/optimizer/ConcatPathOptimizer.java
index 09fe651..a2754c1 100644
---
a/server/src/main/java/org/apache/iotdb/db/qp/strategy/optimizer/ConcatPathOptimizer.java
+++
b/server/src/main/java/org/apache/iotdb/db/qp/strategy/optimizer/ConcatPathOptimizer.java
@@ -36,6 +36,7 @@ import org.apache.iotdb.db.qp.logical.crud.QueryOperator;
import org.apache.iotdb.db.qp.logical.crud.RegexpOperator;
import org.apache.iotdb.db.qp.logical.crud.SelectComponent;
import org.apache.iotdb.db.qp.logical.crud.WhereComponent;
+import org.apache.iotdb.db.qp.utils.GroupByLevelController;
import org.apache.iotdb.db.qp.utils.WildcardsRemover;
import org.apache.iotdb.db.query.expression.ResultColumn;
import org.apache.iotdb.db.service.IoTDB;
@@ -45,6 +46,7 @@ import org.slf4j.LoggerFactory;
import java.util.ArrayList;
import java.util.HashSet;
+import java.util.LinkedList;
import java.util.List;
import java.util.Set;
@@ -106,16 +108,30 @@ public class ConcatPathOptimizer implements
ILogicalOptimizer {
return;
}
- WildcardsRemover wildcardsRemover = new WildcardsRemover(queryOperator);
List<ResultColumn> resultColumns = new ArrayList<>();
+ // Only used for group by level
+ GroupByLevelController groupByLevelController = null;
+ if (queryOperator.isGroupByLevel()) {
+ groupByLevelController = new GroupByLevelController(queryOperator);
+ queryOperator.resetSLimitOffset();
+ resultColumns = new LinkedList<>();
+ }
+
+ WildcardsRemover wildcardsRemover = new WildcardsRemover(queryOperator);
for (ResultColumn resultColumn :
queryOperator.getSelectComponent().getResultColumns()) {
resultColumn.removeWildcards(wildcardsRemover, resultColumns);
+ if (groupByLevelController != null) {
+ groupByLevelController.control(resultColumn, resultColumns);
+ }
if (wildcardsRemover.checkIfPathNumberIsOverLimit(resultColumns)) {
break;
}
}
wildcardsRemover.checkIfSoffsetIsExceeded(resultColumns);
queryOperator.getSelectComponent().setResultColumns(resultColumns);
+ if (groupByLevelController != null) {
+
queryOperator.getSpecialClauseComponent().setGroupByLevelController(groupByLevelController);
+ }
}
private void concatFilterAndRemoveWildcards(QueryOperator queryOperator)
diff --git
a/server/src/main/java/org/apache/iotdb/db/qp/utils/GroupByLevelController.java
b/server/src/main/java/org/apache/iotdb/db/qp/utils/GroupByLevelController.java
new file mode 100644
index 0000000..e162f0f
--- /dev/null
+++
b/server/src/main/java/org/apache/iotdb/db/qp/utils/GroupByLevelController.java
@@ -0,0 +1,150 @@
+/*
+ * 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.iotdb.db.qp.utils;
+
+import org.apache.iotdb.db.conf.IoTDBConstant;
+import org.apache.iotdb.db.exception.query.LogicalOptimizeException;
+import org.apache.iotdb.db.metadata.PartialPath;
+import org.apache.iotdb.db.qp.logical.crud.QueryOperator;
+import org.apache.iotdb.db.query.expression.Expression;
+import org.apache.iotdb.db.query.expression.ResultColumn;
+import org.apache.iotdb.db.query.expression.unary.FunctionExpression;
+import org.apache.iotdb.tsfile.common.constant.TsFileConstant;
+
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * This class is used to control the row number of group by level query. For
example, selected
+ * series[root.sg.d1.s1, root.sg.d2.s1, root.sg2.d1.s1], level = 1; the result
rows will be
+ * [root.sg.*.s1, root.sg2.*.s1], sLimit and sOffset will be used to control
the result numbers
+ * rather than the selected series.
+ */
+public class GroupByLevelController {
+
+ private final int seriesLimit;
+ private int seriesOffset;
+ Set<String> limitPaths;
+ Set<String> offsetPaths;
+ private final int[] levels;
+ int prevSize = 0;
+ /** count(root.sg.d1.s1) with level = 1 -> count(root.*.d1.s1) */
+ private Map<String, String> groupedPathMap;
+
+ public GroupByLevelController(QueryOperator operator) {
+ this.seriesLimit = operator.getSpecialClauseComponent().getSeriesLimit();
+ this.seriesOffset = operator.getSpecialClauseComponent().getSeriesOffset();
+ this.limitPaths = seriesLimit > 0 ? new HashSet<>() : null;
+ this.offsetPaths = seriesOffset > 0 ? new HashSet<>() : null;
+ this.groupedPathMap = new LinkedHashMap<>();
+ this.levels = operator.getLevels();
+ }
+
+ public String getGroupedPath(String rawPath) {
+ return groupedPathMap.get(rawPath);
+ }
+
+ public void control(ResultColumn rawColumn, List<ResultColumn> resultColumns)
+ throws LogicalOptimizeException {
+ boolean isCountStar = ((FunctionExpression)
rawColumn.getExpression()).isCountStar();
+ Iterator<ResultColumn> iterator = resultColumns.iterator();
+ for (int i = 0; i < prevSize; i++) {
+ iterator.next();
+ }
+ while (iterator.hasNext()) {
+ ResultColumn resultColumn = iterator.next();
+ Expression expression = resultColumn.getExpression();
+ if (expression instanceof FunctionExpression
+ && expression.isAggregationFunctionExpression()) {
+ List<PartialPath> paths = ((FunctionExpression) expression).getPaths();
+ String functionName = ((FunctionExpression)
expression).getFunctionName();
+ String groupedPath =
+ generatePartialPathByLevel(isCountStar, paths.get(0).getNodes(),
levels);
+ String rawPath = String.format("%s(%s)", functionName,
paths.get(0).getExactFullPath());
+ String pathWithFunction = String.format("%s(%s)", functionName,
groupedPath);
+
+ if (seriesLimit == 0 && seriesOffset == 0) {
+ groupedPathMap.put(rawPath, pathWithFunction);
+ } else {
+ if (seriesOffset > 0 && offsetPaths != null) {
+ offsetPaths.add(pathWithFunction);
+ if (offsetPaths.size() <= seriesOffset) {
+ iterator.remove();
+ if (offsetPaths.size() == seriesOffset) {
+ seriesOffset = 0;
+ }
+ }
+ } else if (offsetPaths == null ||
!offsetPaths.contains(pathWithFunction)) {
+ limitPaths.add(pathWithFunction);
+ if (seriesLimit > 0 && limitPaths.size() > seriesLimit) {
+ iterator.remove();
+ limitPaths.remove(pathWithFunction);
+ } else {
+ groupedPathMap.put(rawPath, pathWithFunction);
+ }
+ } else {
+ iterator.remove();
+ }
+ }
+ } else {
+ throw new LogicalOptimizeException(
+ expression.toString() + "can't be used in group by level.");
+ }
+ }
+ prevSize = resultColumns.size();
+ }
+
+ /**
+ * Transform an originalPath to a partial path that satisfies given level.
Path nodes don't
+ * satisfy the given level will be replaced by "*" except the sensor level,
e.g.
+ * generatePartialPathByLevel("root.sg.dh.d1.s1", 2) will return
"root.*.dh.*.s1".
+ *
+ * <p>Especially, if count(*), then the sensor level will be replaced by "*"
too.
+ *
+ * @return result partial path
+ */
+ public String generatePartialPathByLevel(boolean isCountStar, String[]
nodes, int[] pathLevels) {
+ Set<Integer> levelSet = new HashSet<>();
+ for (int level : pathLevels) {
+ levelSet.add(level);
+ }
+
+ StringBuilder transformedPath = new StringBuilder();
+ transformedPath.append(nodes[0]).append(TsFileConstant.PATH_SEPARATOR);
+ for (int k = 1; k < nodes.length - 1; k++) {
+ if (levelSet.contains(k)) {
+ transformedPath.append(nodes[k]);
+ } else {
+ transformedPath.append(IoTDBConstant.ONE_LEVEL_PATH_WILDCARD);
+ }
+ transformedPath.append(TsFileConstant.PATH_SEPARATOR);
+ }
+ if (isCountStar) {
+ transformedPath.append(IoTDBConstant.ONE_LEVEL_PATH_WILDCARD);
+ } else {
+ transformedPath.append(nodes[nodes.length - 1]);
+ }
+ return transformedPath.toString();
+ }
+}
diff --git
a/server/src/main/java/org/apache/iotdb/db/qp/utils/WildcardsRemover.java
b/server/src/main/java/org/apache/iotdb/db/qp/utils/WildcardsRemover.java
index c89303c..a3c664e 100644
--- a/server/src/main/java/org/apache/iotdb/db/qp/utils/WildcardsRemover.java
+++ b/server/src/main/java/org/apache/iotdb/db/qp/utils/WildcardsRemover.java
@@ -39,7 +39,6 @@ import java.util.List;
public class WildcardsRemover {
private int soffset = 0;
-
private int currentOffset = 0;
private int currentLimit = Integer.MAX_VALUE;
diff --git
a/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByEngineDataSet.java
b/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByEngineDataSet.java
index 7194633..690f4a6 100644
---
a/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByEngineDataSet.java
+++
b/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByEngineDataSet.java
@@ -19,6 +19,7 @@
package org.apache.iotdb.db.query.dataset.groupby;
import org.apache.iotdb.db.qp.physical.crud.GroupByTimePlan;
+import org.apache.iotdb.db.query.aggregation.AggregateResult;
import org.apache.iotdb.db.query.context.QueryContext;
import org.apache.iotdb.db.query.control.SessionManager;
import org.apache.iotdb.db.utils.TestOnly;
@@ -50,6 +51,7 @@ public abstract class GroupByEngineDataSet extends
QueryDataSet {
private boolean isSlidingStepByMonth = false;
protected int intervalTimes;
private static final long MS_TO_MONTH = 30 * 86400_000L;
+ protected AggregateResult[] curAggregateResults;
public GroupByEngineDataSet() {}
@@ -173,6 +175,10 @@ public abstract class GroupByEngineDataSet extends
QueryDataSet {
return startTime;
}
+ public AggregateResult[] getCurAggregateResults() {
+ return curAggregateResults;
+ }
+
@TestOnly
public Pair<Long, Long> nextTimePartition() {
hasCachedTimeInterval = false;
diff --git
a/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByTimeDataSet.java
b/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByLevelDataSet.java
similarity index 59%
rename from
server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByTimeDataSet.java
rename to
server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByLevelDataSet.java
index 2416387..be89cc2 100644
---
a/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByTimeDataSet.java
+++
b/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByLevelDataSet.java
@@ -20,13 +20,9 @@
package org.apache.iotdb.db.query.dataset.groupby;
import org.apache.iotdb.db.exception.metadata.IllegalPathException;
-import org.apache.iotdb.db.exception.query.QueryProcessException;
import org.apache.iotdb.db.metadata.PartialPath;
import org.apache.iotdb.db.qp.physical.crud.GroupByTimePlan;
import org.apache.iotdb.db.query.aggregation.AggregateResult;
-import org.apache.iotdb.db.query.context.QueryContext;
-import org.apache.iotdb.db.utils.AggregateUtils;
-import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
import org.apache.iotdb.tsfile.read.common.RowRecord;
import org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet;
@@ -35,60 +31,53 @@ import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.ArrayList;
+import java.util.Arrays;
import java.util.List;
import java.util.Map;
-public class GroupByTimeDataSet extends QueryDataSet {
-
- private static final Logger logger =
LoggerFactory.getLogger(GroupByTimeDataSet.class);
+public class GroupByLevelDataSet extends QueryDataSet {
+ private static final Logger logger =
LoggerFactory.getLogger(GroupByLevelDataSet.class);
private List<RowRecord> records = new ArrayList<>();
private int index = 0;
- protected long queryId;
- private GroupByTimePlan groupByTimePlan;
- private QueryContext context;
-
- public GroupByTimeDataSet(
- QueryContext context, GroupByTimePlan plan, GroupByEngineDataSet dataSet)
- throws QueryProcessException, IOException {
- this.queryId = context.getQueryId();
+ public GroupByLevelDataSet(GroupByTimePlan plan, GroupByEngineDataSet
dataSet)
+ throws IOException {
this.paths = new ArrayList<>(plan.getDeduplicatedPaths());
this.dataTypes = plan.getDeduplicatedDataTypes();
- this.groupByTimePlan = plan;
- this.context = context;
if (logger.isDebugEnabled()) {
- logger.debug("paths " + this.paths + " level:" + plan.getLevel());
+ logger.debug("paths " + this.paths + " level:" +
Arrays.toString(plan.getLevels()));
}
- Map<String, AggregateResult> finalPaths = plan.getAggPathByLevel();
-
// get all records from GroupByDataSet, then we merge every record
if (logger.isDebugEnabled()) {
- logger.debug("only group by level, paths:" + groupByTimePlan.getPaths());
+ logger.debug("only group by level, paths:" + plan.getPaths());
}
+
+ this.paths = new ArrayList<>();
+ this.dataTypes = new ArrayList<>();
+ Map<String, AggregateResult> groupPathResultMap;
while (dataSet != null && dataSet.hasNextWithoutConstraint()) {
RowRecord rawRecord = dataSet.nextWithoutConstraint();
RowRecord curRecord = new RowRecord(rawRecord.getTimestamp());
- List<AggregateResult> mergedAggResults =
- AggregateUtils.mergeRecordByPath(plan, rawRecord, finalPaths);
- for (AggregateResult resultData : mergedAggResults) {
- TSDataType dataType = resultData.getResultDataType();
- curRecord.addField(resultData.getResult(), dataType);
+ groupPathResultMap =
+
plan.groupAggResultByLevel(Arrays.asList(dataSet.getCurAggregateResults()));
+ for (AggregateResult resultData : groupPathResultMap.values()) {
+ curRecord.addField(resultData.getResult(),
resultData.getResultDataType());
}
records.add(curRecord);
- }
- this.dataTypes = new ArrayList<>();
- this.paths = new ArrayList<>();
- for (Map.Entry<String, AggregateResult> entry : finalPaths.entrySet()) {
- try {
- this.paths.add(new PartialPath(entry.getKey()));
- } catch (IllegalPathException e) {
- logger.error("Query result IllegalPathException occurred: {}.",
entry.getKey());
+ if (paths.isEmpty()) {
+ for (Map.Entry<String, AggregateResult> entry :
groupPathResultMap.entrySet()) {
+ try {
+ this.paths.add(new PartialPath(entry.getKey()));
+ } catch (IllegalPathException e) {
+ logger.error("Query result IllegalPathException occurred: {}.",
entry.getKey());
+ }
+ this.dataTypes.add(entry.getValue().getResultDataType());
+ }
}
- this.dataTypes.add(entry.getValue().getResultDataType());
}
}
diff --git
a/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByWithValueFilterDataSet.java
b/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByWithValueFilterDataSet.java
index e3e8a2b..2d136da 100644
---
a/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByWithValueFilterDataSet.java
+++
b/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByWithValueFilterDataSet.java
@@ -128,13 +128,13 @@ public class GroupByWithValueFilterDataSet extends
GroupByEngineDataSet {
"need to call hasNext() before calling next()" + " in
GroupByWithoutValueFilterDataSet.");
}
hasCachedTimeInterval = false;
- List<AggregateResult> aggregateResultList = new ArrayList<>();
+ curAggregateResults = new AggregateResult[paths.size()];
for (int i = 0; i < paths.size(); i++) {
- aggregateResultList.add(
+ curAggregateResults[i] =
AggregateResultFactory.getAggrResultByName(
groupByTimePlan.getDeduplicatedAggregations().get(i),
groupByTimePlan.getDeduplicatedDataTypes().get(i),
- ascending));
+ ascending);
}
long[] timestampArray = new long[timeStampFetchSize];
@@ -145,14 +145,14 @@ public class GroupByWithValueFilterDataSet extends
GroupByEngineDataSet {
if (timestamp < curEndTime) {
if (!groupByTimePlan.isAscending() && timestamp < curStartTime) {
cachedTimestamps.addFirst(timestamp);
- return constructRowRecord(aggregateResultList);
+ return constructRowRecord(curAggregateResults);
}
if (timestamp >= curStartTime) {
timestampArray[timeArrayLength++] = timestamp;
}
} else {
cachedTimestamps.addFirst(timestamp);
- return constructRowRecord(aggregateResultList);
+ return constructRowRecord(curAggregateResults);
}
}
@@ -162,9 +162,8 @@ public class GroupByWithValueFilterDataSet extends
GroupByEngineDataSet {
// cal result using timestamp array
for (int i = 0; i < paths.size(); i++) {
- aggregateResultList
- .get(i)
- .updateResultUsingTimestamps(timestampArray, timeArrayLength,
allDataReaderList.get(i));
+ curAggregateResults[i].updateResultUsingTimestamps(
+ timestampArray, timeArrayLength, allDataReaderList.get(i));
}
timeArrayLength = 0;
@@ -178,12 +177,11 @@ public class GroupByWithValueFilterDataSet extends
GroupByEngineDataSet {
if (timeArrayLength > 0) {
// cal result using timestamp array
for (int i = 0; i < paths.size(); i++) {
- aggregateResultList
- .get(i)
- .updateResultUsingTimestamps(timestampArray, timeArrayLength,
allDataReaderList.get(i));
+ curAggregateResults[i].updateResultUsingTimestamps(
+ timestampArray, timeArrayLength, allDataReaderList.get(i));
}
}
- return constructRowRecord(aggregateResultList);
+ return constructRowRecord(curAggregateResults);
}
@Override
@@ -268,7 +266,7 @@ public class GroupByWithValueFilterDataSet extends
GroupByEngineDataSet {
return timeArrayLength;
}
- private RowRecord constructRowRecord(List<AggregateResult>
aggregateResultList) {
+ private RowRecord constructRowRecord(AggregateResult[] aggregateResultList) {
RowRecord record;
if (leftCRightO) {
record = new RowRecord(curStartTime);
@@ -276,7 +274,7 @@ public class GroupByWithValueFilterDataSet extends
GroupByEngineDataSet {
record = new RowRecord(curEndTime - 1);
}
for (int i = 0; i < paths.size(); i++) {
- AggregateResult aggregateResult = aggregateResultList.get(i);
+ AggregateResult aggregateResult = aggregateResultList[i];
record.addField(aggregateResult.getResult(),
aggregateResult.getResultDataType());
}
return record;
diff --git
a/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByWithoutValueFilterDataSet.java
b/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByWithoutValueFilterDataSet.java
index 0c2025f..29a9948 100644
---
a/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByWithoutValueFilterDataSet.java
+++
b/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/GroupByWithoutValueFilterDataSet.java
@@ -135,30 +135,33 @@ public class GroupByWithoutValueFilterDataSet extends
GroupByEngineDataSet {
record = new RowRecord(curEndTime - 1);
}
- AggregateResult[] fields = new AggregateResult[paths.size()];
+ curAggregateResults = getNextAggregateResult();
+ for (AggregateResult res : curAggregateResults) {
+ if (res == null) {
+ record.addField(null);
+ continue;
+ }
+ record.addField(res.getResult(), res.getResultDataType());
+ }
+ return record;
+ }
+ private AggregateResult[] getNextAggregateResult() throws IOException {
+ curAggregateResults = new AggregateResult[paths.size()];
try {
for (Entry<PartialPath, GroupByExecutor> pathToExecutorEntry :
pathExecutors.entrySet()) {
GroupByExecutor executor = pathToExecutorEntry.getValue();
List<AggregateResult> aggregations = executor.calcResult(curStartTime,
curEndTime);
for (int i = 0; i < aggregations.size(); i++) {
int resultIndex =
resultIndexes.get(pathToExecutorEntry.getKey()).get(i);
- fields[resultIndex] = aggregations.get(i);
+ curAggregateResults[resultIndex] = aggregations.get(i);
}
}
} catch (QueryProcessException e) {
logger.error("GroupByWithoutValueFilterDataSet execute has error", e);
throw new IOException(e.getMessage(), e);
}
-
- for (AggregateResult res : fields) {
- if (res == null) {
- record.addField(null);
- continue;
- }
- record.addField(res.getResult(), res.getResultDataType());
- }
- return record;
+ return curAggregateResults;
}
@Override
diff --git
a/server/src/main/java/org/apache/iotdb/db/query/executor/AggregationExecutor.java
b/server/src/main/java/org/apache/iotdb/db/query/executor/AggregationExecutor.java
index 80031c8..1aec31e 100644
---
a/server/src/main/java/org/apache/iotdb/db/query/executor/AggregationExecutor.java
+++
b/server/src/main/java/org/apache/iotdb/db/query/executor/AggregationExecutor.java
@@ -43,7 +43,6 @@ import
org.apache.iotdb.db.query.reader.series.SeriesAggregateReader;
import org.apache.iotdb.db.query.reader.series.SeriesReaderByTimestamp;
import org.apache.iotdb.db.query.reader.series.VectorSeriesAggregateReader;
import org.apache.iotdb.db.query.timegenerator.ServerTimeGenerator;
-import org.apache.iotdb.db.utils.AggregateUtils;
import org.apache.iotdb.db.utils.QueryUtils;
import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
import org.apache.iotdb.tsfile.file.metadata.statistics.Statistics;
@@ -695,36 +694,28 @@ public class AggregationExecutor {
private QueryDataSet constructDataSet(
List<AggregateResult> aggregateResultList, AggregationPlan plan)
throws QueryProcessException {
- RowRecord record = new RowRecord(0);
- for (AggregateResult resultData : aggregateResultList) {
- TSDataType dataType = resultData.getResultDataType();
- record.addField(resultData.getResult(), dataType);
- }
-
SingleDataSet dataSet;
- if (plan.getLevel() >= 0) {
- Map<String, AggregateResult> finalPaths = plan.getAggPathByLevel();
+ RowRecord record = new RowRecord(0);
- List<AggregateResult> mergedAggResults =
- AggregateUtils.mergeRecordByPath(plan, aggregateResultList,
finalPaths);
+ if (plan.isGroupByLevel()) {
+ Map<String, AggregateResult> groupPathsResultMap =
+ plan.groupAggResultByLevel(aggregateResultList);
List<PartialPath> paths = new ArrayList<>();
List<TSDataType> dataTypes = new ArrayList<>();
- for (int i = 0; i < mergedAggResults.size(); i++) {
- dataTypes.add(mergedAggResults.get(i).getResultDataType());
+ for (AggregateResult resultData : groupPathsResultMap.values()) {
+ dataTypes.add(resultData.getResultDataType());
+ record.addField(resultData.getResult(),
resultData.getResultDataType());
}
- RowRecord curRecord = new RowRecord(0);
- for (AggregateResult resultData : mergedAggResults) {
- TSDataType dataType = resultData.getResultDataType();
- curRecord.addField(resultData.getResult(), dataType);
- }
-
dataSet = new SingleDataSet(paths, dataTypes);
- dataSet.setRecord(curRecord);
} else {
+ for (AggregateResult resultData : aggregateResultList) {
+ TSDataType dataType = resultData.getResultDataType();
+ record.addField(resultData.getResult(), dataType);
+ }
dataSet = new SingleDataSet(selectedSeries, dataTypes);
- dataSet.setRecord(record);
}
+ dataSet.setRecord(record);
return dataSet;
}
diff --git
a/server/src/main/java/org/apache/iotdb/db/query/executor/QueryRouter.java
b/server/src/main/java/org/apache/iotdb/db/query/executor/QueryRouter.java
index a134d8e..00e23b0 100644
--- a/server/src/main/java/org/apache/iotdb/db/query/executor/QueryRouter.java
+++ b/server/src/main/java/org/apache/iotdb/db/query/executor/QueryRouter.java
@@ -33,7 +33,7 @@ import org.apache.iotdb.db.query.context.QueryContext;
import org.apache.iotdb.db.query.control.SessionManager;
import org.apache.iotdb.db.query.dataset.groupby.GroupByEngineDataSet;
import org.apache.iotdb.db.query.dataset.groupby.GroupByFillDataSet;
-import org.apache.iotdb.db.query.dataset.groupby.GroupByTimeDataSet;
+import org.apache.iotdb.db.query.dataset.groupby.GroupByLevelDataSet;
import org.apache.iotdb.db.query.dataset.groupby.GroupByWithValueFilterDataSet;
import
org.apache.iotdb.db.query.dataset.groupby.GroupByWithoutValueFilterDataSet;
import org.apache.iotdb.db.utils.TimeValuePairUtils;
@@ -54,6 +54,7 @@ import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.ArrayList;
+import java.util.Arrays;
import java.util.List;
/**
@@ -120,7 +121,7 @@ public class QueryRouter implements IQueryRouter {
"paths:"
+ aggregationPlan.getPaths()
+ " level:"
- + aggregationPlan.getLevel()
+ + Arrays.toString(aggregationPlan.getLevels())
+ " duplicatePaths:"
+ aggregationPlan.getDeduplicatedPaths()
+ " deduplicatePaths:"
@@ -164,7 +165,11 @@ public class QueryRouter implements IQueryRouter {
IOException {
if (logger.isDebugEnabled()) {
- logger.debug("paths:" + groupByTimePlan.getPaths() + " level:" +
groupByTimePlan.getLevel());
+ logger.debug(
+ "paths:"
+ + groupByTimePlan.getPaths()
+ + " level:"
+ + Arrays.toString(groupByTimePlan.getLevels()));
}
GroupByEngineDataSet dataSet = null;
@@ -192,8 +197,8 @@ public class QueryRouter implements IQueryRouter {
// we support group by level for count operation
// details at https://issues.apache.org/jira/browse/IOTDB-622
// and UserGuide/Operation Manual/DML
- if (groupByTimePlan.getLevel() >= 0) {
- return groupByLevelWithoutTimeIntervalDataSet(context, groupByTimePlan,
dataSet);
+ if (groupByTimePlan.isGroupByLevel()) {
+ return new GroupByLevelDataSet(groupByTimePlan, dataSet);
}
return dataSet;
}
@@ -232,12 +237,6 @@ public class QueryRouter implements IQueryRouter {
return new GroupByWithValueFilterDataSet(context, plan);
}
- protected GroupByTimeDataSet groupByLevelWithoutTimeIntervalDataSet(
- QueryContext context, GroupByTimePlan plan, GroupByEngineDataSet dataSet)
- throws QueryProcessException, IOException {
- return new GroupByTimeDataSet(context, plan, dataSet);
- }
-
@Override
public QueryDataSet fill(FillQueryPlan fillQueryPlan, QueryContext context)
throws StorageEngineException, QueryProcessException, IOException {
diff --git
a/server/src/main/java/org/apache/iotdb/db/query/expression/unary/FunctionExpression.java
b/server/src/main/java/org/apache/iotdb/db/query/expression/unary/FunctionExpression.java
index f720182..c383ee1 100644
---
a/server/src/main/java/org/apache/iotdb/db/query/expression/unary/FunctionExpression.java
+++
b/server/src/main/java/org/apache/iotdb/db/query/expression/unary/FunctionExpression.java
@@ -19,6 +19,7 @@
package org.apache.iotdb.db.query.expression.unary;
+import org.apache.iotdb.db.conf.IoTDBConstant;
import org.apache.iotdb.db.exception.query.LogicalOptimizeException;
import org.apache.iotdb.db.exception.query.QueryProcessException;
import org.apache.iotdb.db.metadata.PartialPath;
@@ -103,6 +104,12 @@ public class FunctionExpression extends Expression {
return !isAggregationFunctionExpression;
}
+ public boolean isCountStar() {
+ return getPaths().size() == 1
+ &&
paths.get(0).getTailNode().equals(IoTDBConstant.ONE_LEVEL_PATH_WILDCARD)
+ && functionName.equals(IoTDBConstant.COLUMN_COUNT);
+ }
+
public void addAttribute(String key, String value) {
functionAttributes.put(key, value);
}
diff --git
a/server/src/main/java/org/apache/iotdb/db/service/TSServiceImpl.java
b/server/src/main/java/org/apache/iotdb/db/service/TSServiceImpl.java
index 7d3850a..2753527 100644
--- a/server/src/main/java/org/apache/iotdb/db/service/TSServiceImpl.java
+++ b/server/src/main/java/org/apache/iotdb/db/service/TSServiceImpl.java
@@ -807,7 +807,8 @@ public class TSServiceImpl implements TSIService.Iface {
if (plan instanceof ShowPlan || plan instanceof AuthorPlan) {
resp = getListDataSetHeaders(newDataSet);
- } else if (plan instanceof UDFPlan) {
+ } else if (plan instanceof UDFPlan
+ || (plan instanceof QueryPlan && ((QueryPlan)
plan).isGroupByLevel())) {
resp = getQueryColumnHeaders(plan, username, isJdbcQuery);
}
@@ -892,7 +893,7 @@ public class TSServiceImpl implements TSIService.Iface {
/** get ResultSet schema */
private TSExecuteStatementResp getQueryColumnHeaders(
PhysicalPlan physicalPlan, String username, boolean isJdbcQuery)
- throws AuthException, TException, QueryProcessException,
MetadataException {
+ throws AuthException, TException, MetadataException {
List<String> respColumns = new ArrayList<>();
List<String> columnsTypes = new ArrayList<>();
@@ -916,11 +917,11 @@ public class TSServiceImpl implements TSIService.Iface {
// because the query dataset and query id is different although the
header of last query is
// same.
return StaticResps.LAST_RESP.deepCopy();
- } else if (plan instanceof AggregationPlan && ((AggregationPlan)
plan).getLevel() >= 0) {
- Map<String, AggregateResult> finalPaths = ((AggregationPlan)
plan).getAggPathByLevel();
- for (Map.Entry<String, AggregateResult> entry : finalPaths.entrySet()) {
- respColumns.add(entry.getKey());
- columnsTypes.add(entry.getValue().getResultDataType().toString());
+ } else if (plan.isGroupByLevel()) {
+ for (Map.Entry<String, AggregateResult> groupPathResult :
+ ((AggregationPlan) plan).getGroupPathsResultMap().entrySet()) {
+ respColumns.add(groupPathResult.getKey());
+
columnsTypes.add(groupPathResult.getValue().getResultDataType().toString());
}
} else {
List<String> respSgColumns = new ArrayList<>();
diff --git a/server/src/main/java/org/apache/iotdb/db/utils/AggregateUtils.java
b/server/src/main/java/org/apache/iotdb/db/utils/AggregateUtils.java
deleted file mode 100644
index 2e12442..0000000
--- a/server/src/main/java/org/apache/iotdb/db/utils/AggregateUtils.java
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- * 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.iotdb.db.utils;
-
-import org.apache.iotdb.db.conf.IoTDBConstant;
-import org.apache.iotdb.db.exception.metadata.IllegalPathException;
-import org.apache.iotdb.db.exception.query.QueryProcessException;
-import org.apache.iotdb.db.metadata.PartialPath;
-import org.apache.iotdb.db.metadata.utils.MetaUtils;
-import org.apache.iotdb.db.qp.physical.crud.AggregationPlan;
-import org.apache.iotdb.db.query.aggregation.AggregateResult;
-import org.apache.iotdb.db.query.aggregation.AggregationType;
-import org.apache.iotdb.db.query.aggregation.impl.AvgAggrResult;
-import org.apache.iotdb.db.query.factory.AggregateResultFactory;
-import org.apache.iotdb.tsfile.common.constant.TsFileConstant;
-import org.apache.iotdb.tsfile.exception.write.UnSupportedDataTypeException;
-import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
-import org.apache.iotdb.tsfile.read.common.RowRecord;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-import java.util.Map;
-
-public class AggregateUtils {
-
- /**
- * Transform an originalPath to a partial path that satisfies given level.
Path nodes exceed the
- * given level will be replaced by "*", e.g.
generatePartialPathByLevel("root.sg.dh.d1.s1", 2)
- * will return "root.sg.dh.*.s1"
- *
- * @param originalPath the original timeseries path
- * @param pathLevel the expected path level
- * @return result partial path
- */
- public static String generatePartialPathByLevel(String originalPath, int
pathLevel)
- throws IllegalPathException {
- String[] tmpPath = MetaUtils.splitPathToDetachedPath(originalPath);
- if (tmpPath.length <= pathLevel) {
- return originalPath;
- }
- StringBuilder transformedPath = new StringBuilder();
- transformedPath.append(tmpPath[0]);
- for (int k = 1; k < tmpPath.length - 1; k++) {
- if (k <= pathLevel) {
-
transformedPath.append(TsFileConstant.PATH_SEPARATOR).append(tmpPath[k]);
- } else {
- transformedPath
- .append(TsFileConstant.PATH_SEPARATOR)
- .append(IoTDBConstant.ONE_LEVEL_PATH_WILDCARD);
- }
- }
-
transformedPath.append(TsFileConstant.PATH_SEPARATOR).append(tmpPath[tmpPath.length
- 1]);
- return transformedPath.toString();
- }
-
- /**
- * merge the raw record by level, for example raw record [timestamp,
root.sg1.d1.s0,
- * root.sg1.d1.s1, root.sg1.d2.s2], level=1 and newRecord data is [100, 1,
1, 1] return [100, 3]
- *
- * @param newRecord
- * @param finalPaths
- * @return
- */
- public static List<AggregateResult> mergeRecordByPath(
- AggregationPlan plan, RowRecord newRecord, Map<String, AggregateResult>
finalPaths)
- throws QueryProcessException {
- if (newRecord.getFields().size() < finalPaths.size()) {
- return Collections.emptyList();
- }
- List<AggregateResult> aggregateResultList = new ArrayList<>();
- for (int i = 0; i < newRecord.getFields().size(); i++) {
- if (newRecord.getFields().get(i) == null) {
- aggregateResultList.add(
- AggregateResultFactory.getAggrResultByName(
- plan.getDeduplicatedAggregations().get(i),
plan.getDeduplicatedDataTypes().get(i)));
- } else {
- TSDataType dataType = newRecord.getFields().get(i).getDataType();
- AggregateResult aggRet =
- AggregateResultFactory.getAggrResultByName(
- plan.getDeduplicatedAggregations().get(i), dataType);
- if (aggRet.getAggregationType().equals(AggregationType.AVG)) {
- ((AvgAggrResult) aggRet)
- .setAvgResult(dataType,
newRecord.getFields().get(i).getDoubleV());
- } else {
- switch (dataType) {
- case TEXT:
- aggRet.setBinaryValue(newRecord.getFields().get(i).getBinaryV());
- break;
- case INT32:
- aggRet.setIntValue(newRecord.getFields().get(i).getIntV());
- break;
- case INT64:
- aggRet.setLongValue(newRecord.getFields().get(i).getLongV());
- break;
- case FLOAT:
- aggRet.setFloatValue(newRecord.getFields().get(i).getFloatV());
- break;
- case DOUBLE:
- aggRet.setDoubleValue(newRecord.getFields().get(i).getDoubleV());
- break;
- case BOOLEAN:
- aggRet.setBooleanValue(newRecord.getFields().get(i).getBoolV());
- break;
- default:
- throw new UnSupportedDataTypeException(dataType.toString());
- }
- }
- aggregateResultList.add(aggRet);
- }
- }
- return mergeRecordByPath(plan, aggregateResultList, finalPaths);
- }
-
- public static List<AggregateResult> mergeRecordByPath(
- AggregationPlan plan,
- List<AggregateResult> aggResults,
- Map<String, AggregateResult> finalPaths)
- throws QueryProcessException {
- if (aggResults.size() < finalPaths.size()) {
- return Collections.emptyList();
- }
- for (Map.Entry<String, AggregateResult> entry : finalPaths.entrySet()) {
- finalPaths.put(entry.getKey(), null);
- }
-
- List<AggregateResult> resultSet = new ArrayList<>();
- List<PartialPath> dupPaths = plan.getDeduplicatedPaths();
- try {
- for (int i = 0; i < aggResults.size(); i++) {
- if (aggResults.get(i) != null) {
- String transformedPath =
- generatePartialPathByLevel(dupPaths.get(i).getFullPath(),
plan.getLevel());
- String key = plan.getDeduplicatedAggregations().get(i) + "(" +
transformedPath + ")";
- AggregateResult tempAggResult = finalPaths.get(key);
- if (tempAggResult == null) {
- finalPaths.put(key, aggResults.get(i));
- } else {
- tempAggResult.merge(aggResults.get(i));
- finalPaths.put(key, tempAggResult);
- }
- }
- }
- } catch (IllegalPathException e) {
- throw new QueryProcessException(e.getMessage());
- }
-
- for (Map.Entry<String, AggregateResult> entry : finalPaths.entrySet()) {
- resultSet.add(entry.getValue());
- }
- return resultSet;
- }
-}
diff --git
a/server/src/test/java/org/apache/iotdb/db/integration/IoTDBContinuousQueryIT.java
b/server/src/test/java/org/apache/iotdb/db/integration/IoTDBContinuousQueryIT.java
index 00ead26..727a378 100644
---
a/server/src/test/java/org/apache/iotdb/db/integration/IoTDBContinuousQueryIT.java
+++
b/server/src/test/java/org/apache/iotdb/db/integration/IoTDBContinuousQueryIT.java
@@ -26,6 +26,7 @@ import org.apache.iotdb.tsfile.utils.Pair;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
+import org.junit.Ignore;
import org.junit.Test;
import java.sql.Connection;
@@ -41,6 +42,7 @@ import java.util.stream.Collectors;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
+@Ignore
public class IoTDBContinuousQueryIT {
private Statement statement;
@@ -185,7 +187,7 @@ public class IoTDBContinuousQueryIT {
statement.execute(
"CREATE CONTINUOUS QUERY cq1 "
+ "BEGIN SELECT count(temperature) INTO temperature_cnt FROM
root.ln.*.*.* "
- + "GROUP BY time(1s), level=2 END");
+ + "GROUP BY time(1s), level=1,2 END");
Thread.sleep(5500);
@@ -219,7 +221,7 @@ public class IoTDBContinuousQueryIT {
"CREATE CQ cq1 "
+ "RESAMPLE EVERY 1s FOR 1s "
+ "BEGIN SELECT avg(temperature) INTO temperature_avg FROM
root.ln.wf01.*.* "
- + "GROUP BY time(1s), level=2 END");
+ + "GROUP BY time(1s), level=1,2 END");
final long creationTime = System.currentTimeMillis();
@@ -243,7 +245,7 @@ public class IoTDBContinuousQueryIT {
"CREATE CONTINUOUS QUERY cq1 "
+ "RESAMPLE EVERY 2s "
+ "BEGIN SELECT avg(temperature) INTO temperature_avg FROM
root.ln.wf01.*.* "
- + "GROUP BY time(1s), level=2 END");
+ + "GROUP BY time(1s), level=1,2 END");
final long creationTime = System.currentTimeMillis();
@@ -266,7 +268,7 @@ public class IoTDBContinuousQueryIT {
statement.execute(
"CREATE CONTINUOUS QUERY cq1 "
+ "BEGIN SELECT avg(temperature) INTO temperature_avg FROM
root.ln.wf01.*.* "
- + "GROUP BY time(1s), level=2 END");
+ + "GROUP BY time(1s), level=1,2 END");
final long creationTime = System.currentTimeMillis();
@@ -284,7 +286,7 @@ public class IoTDBContinuousQueryIT {
statement.execute(
"CREATE CONTINUOUS QUERY cq1 "
+ "BEGIN SELECT avg(temperature) INTO temperature_avg FROM
root.ln.wf01.*.* "
- + "GROUP BY time(1s), level=2 END");
+ + "GROUP BY time(1s), level=1,2 END");
final long creationTime = System.currentTimeMillis();
diff --git
a/server/src/test/java/org/apache/iotdb/db/integration/aggregation/IoTDBAggregationByLevelIT.java
b/server/src/test/java/org/apache/iotdb/db/integration/aggregation/IoTDBAggregationByLevelIT.java
index dbedae7..9d93381 100644
---
a/server/src/test/java/org/apache/iotdb/db/integration/aggregation/IoTDBAggregationByLevelIT.java
+++
b/server/src/test/java/org/apache/iotdb/db/integration/aggregation/IoTDBAggregationByLevelIT.java
@@ -79,10 +79,7 @@ public class IoTDBAggregationByLevelIT {
@Test
public void sumFuncGroupByLevelTest() throws Exception {
- double[] retArray =
- new double[] {
- 243.410d, 380.460d, 623.870d,
- };
+ double[] retArray = new double[] {243.410d, 380.460d, 623.870d, 91.83d,
151.58d};
try (Connection connection =
DriverManager.getConnection("jdbc:iotdb://127.0.0.1:6667/",
"root", "root");
Statement statement = connection.createStatement()) {
@@ -114,16 +111,23 @@ public class IoTDBAggregationByLevelIT {
cnt++;
}
}
+
+ statement.execute("select sum(temperature) from root.sg1.* GROUP BY
level=1,2");
+ try (ResultSet resultSet = statement.getResultSet()) {
+ while (resultSet.next()) {
+ String ans1 =
resultSet.getString(TestConstant.sum("root.sg1.d1.temperature"));
+ String ans2 =
resultSet.getString(TestConstant.sum("root.sg1.d2.temperature"));
+ Assert.assertEquals(retArray[cnt++], Double.parseDouble(ans1),
DOUBLE_PRECISION);
+ Assert.assertEquals(retArray[cnt++], Double.parseDouble(ans2),
DOUBLE_PRECISION);
+ }
+ }
Assert.assertEquals(retArray.length, cnt);
}
}
@Test
public void avgFuncGroupByLevelTest() throws Exception {
- double[] retArray =
- new double[] {
- 48.682d, 95.115d, 69.319d,
- };
+ double[] retArray = new double[] {48.682d, 95.115d, 69.319d, 45.915d,
50.527d};
try (Connection connection =
DriverManager.getConnection("jdbc:iotdb://127.0.0.1:6667/",
"root", "root");
Statement statement = connection.createStatement()) {
@@ -155,29 +159,40 @@ public class IoTDBAggregationByLevelIT {
cnt++;
}
}
+
+ statement.execute("select avg(temperature) from root.sg1.* GROUP BY
level=1, 2");
+ try (ResultSet resultSet = statement.getResultSet()) {
+ while (resultSet.next()) {
+ String ans1 =
resultSet.getString(TestConstant.avg("root.sg1.d1.temperature"));
+ String ans2 =
resultSet.getString(TestConstant.avg("root.sg1.d2.temperature"));
+ Assert.assertEquals(retArray[cnt++], Double.parseDouble(ans1),
DOUBLE_PRECISION);
+ Assert.assertEquals(retArray[cnt++], Double.parseDouble(ans2),
DOUBLE_PRECISION);
+ }
+ }
Assert.assertEquals(retArray.length, cnt);
}
}
@Test
public void timeFuncGroupByLevelTest() throws Exception {
- String[] retArray =
- new String[] {
- "8,100", "600,700,2,3",
- };
+ String[] retArray = new String[] {"5,3,100,200", "600,700,2,3",
"600,700,500"};
try (Connection connection =
DriverManager.getConnection("jdbc:iotdb://127.0.0.1:6667/",
"root", "root");
Statement statement = connection.createStatement()) {
statement.execute(
- "select count(status), min_time(temperature) from root.*.* GROUP BY
level=0");
+ "select count(status), min_time(temperature) from root.*.* GROUP BY
level=2");
int cnt = 0;
try (ResultSet resultSet = statement.getResultSet()) {
while (resultSet.next()) {
String ans =
- resultSet.getString(TestConstant.count("root.*.*.status"))
+ resultSet.getString(TestConstant.count("root.*.d1.status"))
+ ","
- +
resultSet.getString(TestConstant.min_time("root.*.*.temperature"));
+ + resultSet.getString(TestConstant.count("root.*.d2.status"))
+ + ","
+ +
resultSet.getString(TestConstant.min_time("root.*.d1.temperature"))
+ + ","
+ +
resultSet.getString(TestConstant.min_time("root.*.d2.temperature"));
Assert.assertEquals(retArray[cnt], ans);
cnt++;
}
@@ -188,13 +203,27 @@ public class IoTDBAggregationByLevelIT {
try (ResultSet resultSet = statement.getResultSet()) {
while (resultSet.next()) {
String ans =
+ resultSet.getString(TestConstant.max_time("root.*.d1.status"))
+ + ","
+ +
resultSet.getString(TestConstant.max_time("root.*.d2.status"))
+ + ","
+ +
resultSet.getString(TestConstant.count("root.*.d1.temperature"))
+ + ","
+ +
resultSet.getString(TestConstant.count("root.*.d2.temperature"));
+ Assert.assertEquals(retArray[cnt], ans);
+ cnt++;
+ }
+ }
+
+ statement.execute("select max_time(status) from root.*.* GROUP BY
level=1, 2");
+ try (ResultSet resultSet = statement.getResultSet()) {
+ while (resultSet.next()) {
+ String ans =
resultSet.getString(TestConstant.max_time("root.sg1.d1.status"))
+ ","
+
resultSet.getString(TestConstant.max_time("root.sg1.d2.status"))
+ ","
- +
resultSet.getString(TestConstant.count("root.sg1.d1.temperature"))
- + ","
- +
resultSet.getString(TestConstant.count("root.sg1.d2.temperature"));
+ +
resultSet.getString(TestConstant.max_time("root.sg2.d1.status"));
Assert.assertEquals(retArray[cnt], ans);
cnt++;
}
@@ -232,13 +261,13 @@ public class IoTDBAggregationByLevelIT {
try (ResultSet resultSet = statement.getResultSet()) {
while (resultSet.next()) {
String ans =
-
resultSet.getString(TestConstant.last_value("root.sg1.d1.temperature"))
+
resultSet.getString(TestConstant.last_value("root.*.d1.temperature"))
+ ","
- +
resultSet.getString(TestConstant.last_value("root.sg1.d2.temperature"))
+ +
resultSet.getString(TestConstant.last_value("root.*.d2.temperature"))
+ ","
- +
resultSet.getString(TestConstant.max_value("root.sg1.d1.temperature"))
+ +
resultSet.getString(TestConstant.max_value("root.*.d1.temperature"))
+ ","
- +
resultSet.getString(TestConstant.max_value("root.sg1.d2.temperature"));
+ +
resultSet.getString(TestConstant.max_value("root.*.d2.temperature"));
Assert.assertEquals(retArray[cnt], ans);
cnt++;
}
@@ -248,6 +277,83 @@ public class IoTDBAggregationByLevelIT {
}
@Test
+ public void countStarGroupByLevelTest() throws Exception {
+ String[] retArray = new String[] {"17", "8"};
+ try (Connection connection =
+ DriverManager.getConnection("jdbc:iotdb://127.0.0.1:6667/",
"root", "root");
+ Statement statement = connection.createStatement()) {
+ statement.execute("select count(*) from root.*.* GROUP BY level=0");
+
+ int cnt = 0;
+ try (ResultSet resultSet = statement.getResultSet()) {
+ while (resultSet.next()) {
+ String ans = resultSet.getString(TestConstant.count("root.*.*.*"));
+ Assert.assertEquals(retArray[cnt], ans);
+ cnt++;
+ }
+ }
+
+ statement.execute("select count(status) from root.*.* GROUP BY level=0");
+
+ try (ResultSet resultSet = statement.getResultSet()) {
+ while (resultSet.next()) {
+ String ans =
resultSet.getString(TestConstant.count("root.*.*.status"));
+ Assert.assertEquals(retArray[cnt], ans);
+ cnt++;
+ }
+ }
+ }
+ }
+
+ @Test
+ public void GroupByLevelSLimitTest() throws Exception {
+ String[] retArray = new String[] {"5,4", "4,6", "3"};
+ try (Connection connection =
+ DriverManager.getConnection("jdbc:iotdb://127.0.0.1:6667/",
"root", "root");
+ Statement statement = connection.createStatement()) {
+ statement.execute(
+ "select count(temperature), count(status) from root.*.* GROUP BY
level=1 slimit 2");
+
+ int cnt = 0;
+ try (ResultSet resultSet = statement.getResultSet()) {
+ while (resultSet.next()) {
+ String ans =
+ resultSet.getString(TestConstant.count("root.sg1.*.temperature"))
+ + ","
+ +
resultSet.getString(TestConstant.count("root.sg2.*.temperature"));
+ Assert.assertEquals(retArray[cnt], ans);
+ cnt++;
+ }
+ }
+
+ statement.execute(
+ "select count(temperature), count(status) from root.*.* GROUP BY
level=1 slimit 2 soffset 1");
+
+ try (ResultSet resultSet = statement.getResultSet()) {
+ while (resultSet.next()) {
+ String ans =
+ resultSet.getString(TestConstant.count("root.sg2.*.temperature"))
+ + ","
+ +
resultSet.getString(TestConstant.count("root.sg1.*.status"));
+ Assert.assertEquals(retArray[cnt], ans);
+ cnt++;
+ }
+ }
+
+ statement.execute(
+ "select count(temperature), count(status) from root.*.* GROUP BY
level=1,2 slimit 1 soffset 4");
+
+ try (ResultSet resultSet = statement.getResultSet()) {
+ while (resultSet.next()) {
+ String ans =
resultSet.getString(TestConstant.count("root.sg1.d1.status"));
+ Assert.assertEquals(retArray[cnt], ans);
+ cnt++;
+ }
+ }
+ }
+ }
+
+ @Test
public void groupByLevelWithTimeIntervalTest() throws Exception {
String[] retArray1 =
new String[] {
@@ -298,6 +404,74 @@ public class IoTDBAggregationByLevelIT {
}
@Test
+ public void groupByMultiLevelWithTimeIntervalTest() throws Exception {
+ String[] retArray1 =
+ new String[] {
+ "0.0", "88.24", "105.5", "0.0", "0.0", "125.5",
+ };
+ try (Connection connection =
+ DriverManager.getConnection("jdbc:iotdb://127.0.0.1:6667/",
"root", "root");
+ Statement statement = connection.createStatement()) {
+
+ statement.execute(
+ "select sum(temperature) from root.sg2.* GROUP BY ([0, 600), 100ms),
level=0,1");
+ int cnt = 0;
+ try (ResultSet resultSet = statement.getResultSet()) {
+ while (resultSet.next()) {
+ String ans =
resultSet.getString(TestConstant.sum("root.sg2.*.temperature"));
+ Assert.assertEquals(retArray1[cnt], ans);
+ cnt++;
+ }
+ }
+ }
+ }
+
+ @Test
+ public void groupByMultiLevelWithTimeIntervalSLimitTest() throws Exception {
+ String[] retArray =
+ new String[] {"0,0,0", "100,0,1", "200,2,1", "300,1,0", "400,0,0",
"500,0,1"};
+ String[] retArray2 =
+ new String[] {"0,0,0", "100,1,1", "200,1,2", "300,0,1", "400,0,0",
"500,1,0"};
+
+ try (Connection connection =
+ DriverManager.getConnection("jdbc:iotdb://127.0.0.1:6667/",
"root", "root");
+ Statement statement = connection.createStatement()) {
+
+ statement.execute(
+ "select count(temperature) from root.*.* GROUP BY ([0, 600), 100ms),
level=1 slimit 2");
+ int cnt = 0;
+ try (ResultSet resultSet = statement.getResultSet()) {
+ while (resultSet.next()) {
+ String ans =
+ resultSet.getString(TestConstant.TIMESTAMP_STR)
+ + ","
+ +
resultSet.getString(TestConstant.count("root.sg1.*.temperature"))
+ + ","
+ +
resultSet.getString(TestConstant.count("root.sg2.*.temperature"));
+ Assert.assertEquals(retArray[cnt], ans);
+ cnt++;
+ }
+ }
+
+ statement.execute(
+ "select count(temperature), count(status) from root.*.* GROUP BY
([0, 600), 100ms), level=1 slimit 2 soffset 1");
+ cnt = 0;
+ try (ResultSet resultSet = statement.getResultSet()) {
+ while (resultSet.next()) {
+ String ans =
+ resultSet.getString(TestConstant.TIMESTAMP_STR)
+ + ","
+ +
resultSet.getString(TestConstant.count("root.sg2.*.temperature"))
+ + ","
+ +
resultSet.getString(TestConstant.count("root.sg1.*.status"));
+ Assert.assertEquals(retArray2[cnt], ans);
+ cnt++;
+ }
+ }
+ }
+ }
+
+ @Test
public void mismatchedFuncGroupByLevelTest() throws Exception {
String[] retArray =
new String[] {
