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提交 4c2a4489 authored 作者: Evgenij Ryazanov's avatar Evgenij Ryazanov
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Store window data in SelectGroups

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h2/src/main/org/h2/command/dml/Select.java
浏览文件 @ 4c2a4489
......@@ -8,7 +8,6 @@ package org.h2.command.dml;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.BitSet;
import java.util.HashMap;
import java.util.HashSet;
import org.h2.api.ErrorCode;
import org.h2.api.Trigger;
......@@ -105,7 +104,8 @@ public class Select extends Query {
SelectGroups groupData;
private int havingIndex;
private boolean isGroupQuery, isGroupSortedQuery;
boolean isGroupQuery;
private boolean isGroupSortedQuery;
private boolean isWindowQuery;
private boolean isForUpdate, isForUpdateMvcc;
private double cost;
......@@ -177,8 +177,8 @@ public class Select extends Query {
return group;
}
public SelectGroups getGroupDataIfCurrent(boolean forAggregate) {
return groupData != null && (forAggregate || !isWindowQuery) && groupData.isCurrentGroup() ? groupData : null;
public SelectGroups getGroupDataIfCurrent(boolean window) {
return groupData != null && (window || groupData.isCurrentGroup()) ? groupData : null;
}
@Override
......@@ -357,10 +357,9 @@ public class Select extends Query {
private void queryWindow(int columnCount, LocalResult result, long offset, boolean quickOffset) {
if (groupData == null) {
groupData = new SelectGroups(session, expressions, groupIndex);
groupData = SelectGroups.getInstance(session, expressions, isGroupQuery, groupIndex);
}
groupData.reset();
HashMap<ValueArray, ArrayList<Row>> rows = new HashMap<>();
try {
int rowNumber = 0;
setCurrentRowNumber(0);
......@@ -369,13 +368,7 @@ public class Select extends Query {
setCurrentRowNumber(rowNumber + 1);
if (isConditionMet()) {
rowNumber++;
ValueArray key = groupData.nextSource();
ArrayList<Row> groupRows = rows.get(key);
if (groupRows == null) {
groupRows = Utils.newSmallArrayList();
rows.put(key, groupRows);
}
groupRows.add(topTableFilter.get());
groupData.nextSource();
updateAgg(columnCount);
if (sampleSize > 0 && rowNumber >= sampleSize) {
break;
......@@ -384,11 +377,8 @@ public class Select extends Query {
}
groupData.done();
for (ValueArray currentGroupsKey; (currentGroupsKey = groupData.next()) != null;) {
for (Row originalRow : rows.get(currentGroupsKey)) {
topTableFilter.set(originalRow);
offset = processGroupedRow(columnCount, result, offset, quickOffset, currentGroupsKey);
}
}
} finally {
groupData.reset();
}
......@@ -396,7 +386,7 @@ public class Select extends Query {
private void queryGroup(int columnCount, LocalResult result, long offset, boolean quickOffset) {
if (groupData == null) {
groupData = new SelectGroups(session, expressions, groupIndex);
groupData = SelectGroups.getInstance(session, expressions, isGroupQuery, groupIndex);
}
groupData.reset();
try {
......@@ -1654,7 +1644,7 @@ public class Select extends Query {
LazyResultGroupSorted(Expression[] expressions, int columnCount) {
super(expressions, columnCount);
if (groupData == null) {
groupData = new SelectGroups(getSession(), Select.this.expressions, groupIndex);
groupData = SelectGroups.getInstance(getSession(), Select.this.expressions, isGroupQuery, groupIndex);
} else {
// TODO is this branch possible?
groupData.resetLazy();
......
h2/src/main/org/h2/expression/ExpressionColumn.java
浏览文件 @ 4c2a4489
......@@ -164,9 +164,9 @@ public class ExpressionColumn extends Expression {
// this is a different level (the enclosing query)
return;
}
Value v = (Value) groupData.getCurrentGroupExprData(this);
Value v = (Value) groupData.getCurrentGroupExprData(this, false);
if (v == null) {
groupData.setCurrentGroupExprData(this, now);
groupData.setCurrentGroupExprData(this, now, false);
} else {
if (!database.areEqual(now, v)) {
throw DbException.get(ErrorCode.MUST_GROUP_BY_COLUMN_1, getSQL());
......@@ -180,7 +180,7 @@ public class ExpressionColumn extends Expression {
if (select != null) {
SelectGroups groupData = select.getGroupDataIfCurrent(false);
if (groupData != null) {
Value v = (Value) groupData.getCurrentGroupExprData(this);
Value v = (Value) groupData.getCurrentGroupExprData(this, false);
if (v != null) {
return v;
}
......
h2/src/main/org/h2/expression/aggregate/Aggregate.java
浏览文件 @ 4c2a4489
......@@ -170,10 +170,14 @@ public class Aggregate extends AbstractAggregate {
/**
* Create a new aggregate object.
*
* @param type the aggregate type
* @param on the aggregated expression
* @param select the select statement
* @param distinct if distinct is used
* @param type
* the aggregate type
* @param on
* the aggregated expression
* @param select
* the select statement
* @param distinct
* if distinct is used
*/
public Aggregate(AggregateType type, Expression on, Select select, boolean distinct) {
this.type = type;
......@@ -229,8 +233,10 @@ public class Aggregate extends AbstractAggregate {
* Get the aggregate type for this name, or -1 if no aggregate has been
* found.
*
* @param name the aggregate function name
* @return null if no aggregate function has been found, or the aggregate type
* @param name
* the aggregate function name
* @return null if no aggregate function has been found, or the aggregate
* type
*/
public static AggregateType getAggregateType(String name) {
return AGGREGATES.get(name);
......@@ -239,7 +245,8 @@ public class Aggregate extends AbstractAggregate {
/**
* Set the order for ARRAY_AGG() or GROUP_CONCAT() aggregate.
*
* @param orderByList the order by list
* @param orderByList
* the order by list
*/
public void setOrderByList(ArrayList<SelectOrderBy> orderByList) {
this.orderByList = orderByList;
......@@ -248,7 +255,8 @@ public class Aggregate extends AbstractAggregate {
/**
* Set the separator for the GROUP_CONCAT() aggregate.
*
* @param separator the separator expression
* @param separator
* the separator expression
*/
public void setGroupConcatSeparator(Expression separator) {
this.groupConcatSeparator = separator;
......@@ -286,7 +294,7 @@ public class Aggregate extends AbstractAggregate {
// if (on != null) {
// on.updateAggregate();
// }
SelectGroups groupData = select.getGroupDataIfCurrent(true);
SelectGroups groupData = select.getGroupDataIfCurrent(over != null);
if (groupData == null) {
// this is a different level (the enclosing query)
return;
......@@ -299,6 +307,9 @@ public class Aggregate extends AbstractAggregate {
}
lastGroupRowId = groupRowId;
if (over != null) {
over.updateAggregate(session);
}
if (filterCondition != null) {
if (!filterCondition.getBooleanValue(session)) {
return;
......@@ -366,7 +377,7 @@ public class Aggregate extends AbstractAggregate {
DbException.throwInternalError("type=" + type);
}
}
SelectGroups groupData = select.getGroupDataIfCurrent(true);
SelectGroups groupData = select.getGroupDataIfCurrent(over != null);
if (groupData == null) {
throw DbException.get(ErrorCode.INVALID_USE_OF_AGGREGATE_FUNCTION_1, getSQL());
}
......@@ -381,8 +392,7 @@ public class Aggregate extends AbstractAggregate {
sortWithOrderBy(array);
}
StatementBuilder buff = new StatementBuilder();
String sep = groupConcatSeparator == null ?
"," : groupConcatSeparator.getValue(session).getString();
String sep = groupConcatSeparator == null ? "," : groupConcatSeparator.getValue(session).getString();
for (Value val : array) {
String s;
if (val.getType() == Value.ARRAY) {
......@@ -431,10 +441,11 @@ public class Aggregate extends AbstractAggregate {
ValueArray key;
if (over != null && (key = over.getCurrentKey(session)) != null) {
@SuppressWarnings("unchecked")
ValueHashMap<AggregateData> map = (ValueHashMap<AggregateData>) groupData.getCurrentGroupExprData(this);
ValueHashMap<AggregateData> map = (ValueHashMap<AggregateData>) groupData.getCurrentGroupExprData(this,
true);
if (map == null) {
map = new ValueHashMap<>();
groupData.setCurrentGroupExprData(this, map);
groupData.setCurrentGroupExprData(this, map, true);
}
data = map.get(key);
if (data == null) {
......@@ -442,10 +453,10 @@ public class Aggregate extends AbstractAggregate {
map.put(key, data);
}
} else {
data = (AggregateData) groupData.getCurrentGroupExprData(this);
data = (AggregateData) groupData.getCurrentGroupExprData(this, over != null);
if (data == null) {
data = AggregateData.create(type);
groupData.setCurrentGroupExprData(this, data);
groupData.setCurrentGroupExprData(this, data, over != null);
}
}
return data;
......@@ -766,8 +777,7 @@ public class Aggregate extends AbstractAggregate {
if (on != null && !on.isEverything(visitor)) {
return false;
}
if (groupConcatSeparator != null &&
!groupConcatSeparator.isEverything(visitor)) {
if (groupConcatSeparator != null && !groupConcatSeparator.isEverything(visitor)) {
return false;
}
if (orderByList != null) {
......
h2/src/main/org/h2/expression/aggregate/JavaAggregate.java
浏览文件 @ 4c2a4489
......@@ -160,7 +160,7 @@ public class JavaAggregate extends AbstractAggregate {
@Override
public Value getValue(Session session) {
SelectGroups groupData = select.getGroupDataIfCurrent(true);
SelectGroups groupData = select.getGroupDataIfCurrent(over != null);
if (groupData == null) {
throw DbException.get(ErrorCode.INVALID_USE_OF_AGGREGATE_FUNCTION_1, getSQL());
}
......@@ -201,7 +201,7 @@ public class JavaAggregate extends AbstractAggregate {
@Override
public void updateAggregate(Session session) {
SelectGroups groupData = select.getGroupDataIfCurrent(true);
SelectGroups groupData = select.getGroupDataIfCurrent(over != null);
if (groupData == null) {
// this is a different level (the enclosing query)
return;
......@@ -214,6 +214,9 @@ public class JavaAggregate extends AbstractAggregate {
}
lastGroupRowId = groupRowId;
if (over != null) {
over.updateAggregate(session);
}
if (filterCondition != null) {
if (!filterCondition.getBooleanValue(session)) {
return;
......@@ -253,13 +256,13 @@ public class JavaAggregate extends AbstractAggregate {
ValueArray key;
if (over != null && (key = over.getCurrentKey(session)) != null) {
@SuppressWarnings("unchecked")
ValueHashMap<Aggregate> map = (ValueHashMap<Aggregate>) groupData.getCurrentGroupExprData(this);
ValueHashMap<Aggregate> map = (ValueHashMap<Aggregate>) groupData.getCurrentGroupExprData(this, true);
if (map == null) {
if (ifExists) {
return null;
}
map = new ValueHashMap<>();
groupData.setCurrentGroupExprData(this, map);
groupData.setCurrentGroupExprData(this, map, true);
}
data = map.get(key);
if (data == null) {
......@@ -270,13 +273,13 @@ public class JavaAggregate extends AbstractAggregate {
map.put(key, data);
}
} else {
data = (Aggregate) groupData.getCurrentGroupExprData(this);
data = (Aggregate) groupData.getCurrentGroupExprData(this, over != null);
if (data == null) {
if (ifExists) {
return null;
}
data = getInstance();
groupData.setCurrentGroupExprData(this, data);
groupData.setCurrentGroupExprData(this, data, over != null);
}
}
return data;
......@@ -287,14 +290,14 @@ public class JavaAggregate extends AbstractAggregate {
ValueArray key;
if (over != null && (key = over.getCurrentKey(session)) != null) {
@SuppressWarnings("unchecked")
ValueHashMap<AggregateDataCollecting> map =
(ValueHashMap<AggregateDataCollecting>) groupData.getCurrentGroupExprData(this);
ValueHashMap<AggregateDataCollecting> map = (ValueHashMap<AggregateDataCollecting>) groupData
.getCurrentGroupExprData(this, true);
if (map == null) {
if (ifExists) {
return null;
}
map = new ValueHashMap<>();
groupData.setCurrentGroupExprData(this, map);
groupData.setCurrentGroupExprData(this, map, true);
}
data = map.get(key);
if (data == null) {
......@@ -305,13 +308,13 @@ public class JavaAggregate extends AbstractAggregate {
map.put(key, data);
}
} else {
data = (AggregateDataCollecting) groupData.getCurrentGroupExprData(this);
data = (AggregateDataCollecting) groupData.getCurrentGroupExprData(this, over != null);
if (data == null) {
if (ifExists) {
return null;
}
data = new AggregateDataCollecting();
groupData.setCurrentGroupExprData(this, data);
groupData.setCurrentGroupExprData(this, data, over != null);
}
}
return data;
......
h2/src/main/org/h2/expression/aggregate/Window.java
浏览文件 @ 4c2a4489
......@@ -39,6 +39,7 @@ public final class Window {
* the column resolver
* @param level
* the subquery nesting level
* @see Expression#mapColumns(ColumnResolver, int)
*/
public void mapColumns(ColumnResolver resolver, int level) {
if (partitionBy != null) {
......@@ -56,6 +57,7 @@ public final class Window {
* the table filter
* @param value
* true if the table filter can return value
* @see Expression#setEvaluatable(TableFilter, boolean)
*/
public void setEvaluatable(TableFilter tableFilter, boolean value) {
if (partitionBy != null) {
......@@ -90,6 +92,7 @@ public final class Window {
* Returns SQL representation.
*
* @return SQL representation.
* @see Expression#getSQL()
*/
public String getSQL() {
if (partitionBy == null) {
......@@ -105,6 +108,21 @@ public final class Window {
return builder.append(')').toString();
}
/**
* Update an aggregate value.
*
* @param session
* the session
* @see Expression#updateAggregate(Session)
*/
public void updateAggregate(Session session) {
if (partitionBy != null) {
for (Expression expr : partitionBy) {
expr.updateAggregate(session);
}
}
}
@Override
public String toString() {
return getSQL();
......
h2/src/test/org/h2/test/scripts/functions/aggregate/array-agg.sql
浏览文件 @ 4c2a4489
......@@ -107,6 +107,17 @@ SELECT ARRAY_AGG(ID) OVER (PARTITION BY NAME), NAME FROM TEST;
> (4, 5, 6) c
> rows: 6
SELECT ARRAY_AGG(ID) FILTER (WHERE ID < 3 OR ID > 4) OVER (PARTITION BY NAME), NAME FROM TEST ORDER BY NAME;
> ARRAY_AGG(ID) FILTER (WHERE ((ID < 3) OR (ID > 4))) OVER (PARTITION BY NAME) NAME
> ---------------------------------------------------------------------------- ----
> (1, 2) a
> (1, 2) a
> null b
> (5, 6) c
> (5, 6) c
> (5, 6) c
> rows (ordered): 6
SELECT ARRAY_AGG(SUM(ID)) OVER () FROM TEST;
> exception FEATURE_NOT_SUPPORTED_1
......
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