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new bb288e0d294 [Enhencement](Nereids) add rule of agg(case when) to
agg(filter) (#33598)
bb288e0d294 is described below
commit bb288e0d294827226cc11a00f7c22f0ec0308087
Author: LiBinfeng <46676950+libinfeng...@users.noreply.github.com>
AuthorDate: Tue Apr 16 09:33:28 2024 +0800
[Enhencement](Nereids) add rule of agg(case when) to agg(filter) (#33598)
---
.../doris/nereids/jobs/executor/Rewriter.java | 2 +
.../org/apache/doris/nereids/rules/RuleType.java | 1 +
.../rules/rewrite/EliminateAggCaseWhen.java | 83 +++++++
.../trees/plans/logical/LogicalAggregate.java | 7 +
.../eliminate_aggregate_casewhen.out | 249 +++++++++++++++++++++
.../eliminate_aggregate_casewhen.groovy | 108 +++++++++
6 files changed, 450 insertions(+)
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/nereids/jobs/executor/Rewriter.java
b/fe/fe-core/src/main/java/org/apache/doris/nereids/jobs/executor/Rewriter.java
index e8223524367..2361c276372 100644
---
a/fe/fe-core/src/main/java/org/apache/doris/nereids/jobs/executor/Rewriter.java
+++
b/fe/fe-core/src/main/java/org/apache/doris/nereids/jobs/executor/Rewriter.java
@@ -51,6 +51,7 @@ import
org.apache.doris.nereids.rules.rewrite.CountDistinctRewrite;
import org.apache.doris.nereids.rules.rewrite.CountLiteralRewrite;
import org.apache.doris.nereids.rules.rewrite.CreatePartitionTopNFromWindow;
import org.apache.doris.nereids.rules.rewrite.DeferMaterializeTopNResult;
+import org.apache.doris.nereids.rules.rewrite.EliminateAggCaseWhen;
import org.apache.doris.nereids.rules.rewrite.EliminateAggregate;
import org.apache.doris.nereids.rules.rewrite.EliminateAssertNumRows;
import org.apache.doris.nereids.rules.rewrite.EliminateDedupJoinCondition;
@@ -204,6 +205,7 @@ public class Rewriter extends AbstractBatchJobExecutor {
new EliminateLimit(),
new EliminateFilter(),
new EliminateAggregate(),
+ new EliminateAggCaseWhen(),
new ReduceAggregateChildOutputRows(),
new EliminateJoinCondition(),
new EliminateAssertNumRows(),
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/RuleType.java
b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/RuleType.java
index 3a43e1ad672..696463523f6 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/RuleType.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/RuleType.java
@@ -202,6 +202,7 @@ public enum RuleType {
// Eliminate plan
MERGE_AGGREGATE(RuleTypeClass.REWRITE),
ELIMINATE_AGGREGATE(RuleTypeClass.REWRITE),
+ ELIMINATE_AGG_CASE_WHEN(RuleTypeClass.REWRITE),
ELIMINATE_LIMIT(RuleTypeClass.REWRITE),
ELIMINATE_LIMIT_ON_ONE_ROW_RELATION(RuleTypeClass.REWRITE),
ELIMINATE_LIMIT_ON_EMPTY_RELATION(RuleTypeClass.REWRITE),
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/EliminateAggCaseWhen.java
b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/EliminateAggCaseWhen.java
new file mode 100644
index 00000000000..33a9bbd9242
--- /dev/null
+++
b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/EliminateAggCaseWhen.java
@@ -0,0 +1,83 @@
+// 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.doris.nereids.rules.rewrite;
+
+import org.apache.doris.nereids.rules.Rule;
+import org.apache.doris.nereids.rules.RuleType;
+import org.apache.doris.nereids.trees.expressions.Expression;
+import
org.apache.doris.nereids.trees.expressions.functions.agg.AggregateFunction;
+import org.apache.doris.nereids.trees.expressions.functions.scalar.If;
+import org.apache.doris.nereids.trees.expressions.literal.NullLiteral;
+import org.apache.doris.nereids.trees.plans.Plan;
+import org.apache.doris.nereids.trees.plans.algebra.Filter;
+import org.apache.doris.nereids.trees.plans.logical.LogicalFilter;
+import org.apache.doris.nereids.util.ExpressionUtils;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * Change argument 'case when' or 'if' inside aggregate function , to
aggregate function(filter)
+ * example:
+ * select sum(case when t1.c1 = 101 then 1 END) from t1;
+ * ==>
+ * select sum(1) from t1 where t1.c1 = 101;
+ * note :
+ * only If expression is needed to process cause CaseWhenToIf have already
changed case when to if
+ * but in sql we can still see case when so case when is reserved to explain
this rule
+ * we can only have one output aggregate function cause of filter would
influence other projection
+ * we can only have one aggregate function cause of filter would influence
other aggregate function
+ * we can only have case when/if function without else cause of then can only
have one branch of choice
+ * we can only have one case in case when cause of then can only have one
branch of choice
+ */
+public final class EliminateAggCaseWhen extends OneRewriteRuleFactory {
+ @Override
+ public Rule build() {
+ return logicalAggregate().then(agg -> {
+ Set<AggregateFunction> aggFunctions = agg.getAggregateFunctions();
+ // check whether we only have one aggregate function, and only one
projection of aggregate function
+ if (aggFunctions.size() != 1 || agg.getOutputExpressions().size()
!= 1
+ || !agg.getGroupByExpressions().isEmpty()) {
+ return null;
+ }
+ for (AggregateFunction aggFun : aggFunctions) {
+ // check whether we only have on case when/if in aggregate
function
+ if (aggFun.getArguments().size() != 1) {
+ return null;
+ }
+ // only If expression is needed to process cause CaseWhenToIf
have already changed case when to if
+ if (aggFun.getArgument(0) instanceof If) {
+ If anIf = (If) aggFun.getArgument(0);
+ if (!(anIf.getArgument(2) instanceof NullLiteral)) {
+ return null;
+ }
+ Expression operand = anIf.getArgument(0);
+ Filter filter = new
LogicalFilter<>(ExpressionUtils.extractConjunctionToSet(operand), agg.child());
+ Expression result = anIf.getArgument(1);
+ Map<Expression, Expression> constantExprsReplaceMap = new
HashMap<>(aggFunctions.size());
+ constantExprsReplaceMap.put(aggFun, ((AggregateFunction)
aggFun).withChildren(result));
+ return agg.withChildAndOutput((Plan) filter,
+ ExpressionUtils.replaceNamedExpressions(
+ agg.getOutputExpressions(),
constantExprsReplaceMap));
+ }
+ }
+ return null;
+ }).toRule(RuleType.ELIMINATE_AGG_CASE_WHEN);
+ }
+}
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalAggregate.java
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalAggregate.java
index 1e5e5a45abe..73ddde6cef5 100644
---
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalAggregate.java
+++
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalAggregate.java
@@ -271,6 +271,13 @@ public class LogicalAggregate<CHILD_TYPE extends Plan>
hasPushed, sourceRepeat, Optional.empty(), Optional.empty(),
child());
}
+ public LogicalAggregate<Plan> withChildAndOutput(CHILD_TYPE child,
+ List<NamedExpression>
outputExpressionList) {
+ return new LogicalAggregate<>(groupByExpressions,
outputExpressionList, normalized, ordinalIsResolved,
+ generated, hasPushed, sourceRepeat, Optional.empty(),
+ Optional.empty(), child);
+ }
+
@Override
public List<NamedExpression> getOutputs() {
return outputExpressions;
diff --git
a/regression-test/data/nereids_rules_p0/eliminate_aggregate_casewhen/eliminate_aggregate_casewhen.out
b/regression-test/data/nereids_rules_p0/eliminate_aggregate_casewhen/eliminate_aggregate_casewhen.out
new file mode 100644
index 00000000000..46bfb749845
--- /dev/null
+++
b/regression-test/data/nereids_rules_p0/eliminate_aggregate_casewhen/eliminate_aggregate_casewhen.out
@@ -0,0 +1,249 @@
+-- This file is automatically generated. You should know what you did if you
want to edit this
+-- !basic_1 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t1.c1 > 100))
+----------PhysicalOlapScan[t1]
+
+-- !basic_2 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t1.c1 > 100))
+----------PhysicalOlapScan[t1]
+
+-- !basic_3 --
+PhysicalResultSink
+--hashAgg[LOCAL]
+----PhysicalProject
+------PhysicalOlapScan[t1]
+
+-- !basic_4 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t1.c1 > 100))
+----------PhysicalOlapScan[t1]
+
+-- !basic_5 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t1.c1 > 100))
+----------PhysicalOlapScan[t1]
+
+-- !basic_6 --
+PhysicalResultSink
+--hashAgg[LOCAL]
+----PhysicalProject
+------PhysicalOlapScan[t1]
+
+-- !basic_2_1 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t2.c2 > 100))
+----------PhysicalOlapScan[t2]
+
+-- !basic_2_2 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t2.c2 > 100))
+----------PhysicalOlapScan[t2]
+
+-- !basic_2_3 --
+PhysicalResultSink
+--hashAgg[LOCAL]
+----PhysicalProject
+------PhysicalOlapScan[t2]
+
+-- !basic_2_4 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t2.c2 > 100))
+----------PhysicalOlapScan[t2]
+
+-- !basic_2_5 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t2.c2 > 100))
+----------PhysicalOlapScan[t2]
+
+-- !basic_2_6 --
+PhysicalResultSink
+--hashAgg[LOCAL]
+----PhysicalProject
+------PhysicalOlapScan[t2]
+
+-- !basic_3_1 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t3.c3 > 100))
+----------PhysicalOlapScan[t3]
+
+-- !basic_3_2 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t3.c3 > 100))
+----------PhysicalOlapScan[t3]
+
+-- !basic_3_3 --
+PhysicalResultSink
+--hashAgg[LOCAL]
+----PhysicalProject
+------PhysicalOlapScan[t3]
+
+-- !basic_3_4 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t3.c3 > 100))
+----------PhysicalOlapScan[t3]
+
+-- !basic_3_5 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t3.c3 > 100))
+----------PhysicalOlapScan[t3]
+
+-- !basic_3_6 --
+PhysicalResultSink
+--hashAgg[LOCAL]
+----PhysicalProject
+------PhysicalOlapScan[t3]
+
+-- !basic_4_1 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t4.c4 > 100))
+----------PhysicalOlapScan[t4]
+
+-- !basic_4_2 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t4.c4 > 100))
+----------PhysicalOlapScan[t4]
+
+-- !basic_4_4 --
+PhysicalResultSink
+--hashAgg[LOCAL]
+----PhysicalProject
+------PhysicalOlapScan[t4]
+
+-- !basic_4_4 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t4.c4 > 100))
+----------PhysicalOlapScan[t4]
+
+-- !basic_4_5 --
+PhysicalResultSink
+--hashAgg[GLOBAL]
+----hashAgg[LOCAL]
+------PhysicalProject
+--------filter((t4.c4 > 100))
+----------PhysicalOlapScan[t4]
+
+-- !basic_4_6 --
+PhysicalResultSink
+--hashAgg[LOCAL]
+----PhysicalProject
+------PhysicalOlapScan[t4]
+
+-- !basic_1 --
+10
+
+-- !basic_2 --
+1
+
+-- !basic_3 --
+101 1
+
+-- !basic_4 --
+10
+
+-- !basic_5 --
+1
+
+-- !basic_6 --
+101 1
+
+-- !basic_2_1 --
+\N
+
+-- !basic_2_2 --
+0
+
+-- !basic_2_3 --
+\N 0
+
+-- !basic_2_4 --
+\N
+
+-- !basic_2_5 --
+0
+
+-- !basic_2_6 --
+\N 0
+
+-- !basic_3_1 --
+\N
+
+-- !basic_3_2 --
+0
+
+-- !basic_3_3 --
+
+-- !basic_3_4 --
+\N
+
+-- !basic_3_5 --
+0
+
+-- !basic_3_6 --
+
+-- !basic_4_1 --
+10
+
+-- !basic_4_2 --
+2
+
+-- !basic_4_4 --
+102 1
+103 1
+
+-- !basic_4_4 --
+10
+
+-- !basic_4_5 --
+2
+
+-- !basic_4_6 --
+102 1
+103 1
+
diff --git
a/regression-test/suites/nereids_rules_p0/eliminate_aggregate_casewhen/eliminate_aggregate_casewhen.groovy
b/regression-test/suites/nereids_rules_p0/eliminate_aggregate_casewhen/eliminate_aggregate_casewhen.groovy
new file mode 100644
index 00000000000..6623df4716e
--- /dev/null
+++
b/regression-test/suites/nereids_rules_p0/eliminate_aggregate_casewhen/eliminate_aggregate_casewhen.groovy
@@ -0,0 +1,108 @@
+// 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.
+
+suite("eliminate_aggregate_casewhen") {
+ sql "SET enable_nereids_planner=true"
+ sql "set runtime_filter_mode=OFF"
+ sql "SET enable_fallback_to_original_planner=false"
+ sql "SET ignore_shape_nodes='PhysicalDistribute'"
+ sql 'DROP DATABASE IF EXISTS test_eliminate_aggregate_casewhen'
+ sql 'CREATE DATABASE IF NOT EXISTS test_eliminate_aggregate_casewhen'
+ sql 'use test_eliminate_aggregate_casewhen'
+
+ // create tables
+ sql """drop table if exists t1;"""
+ sql """drop table if exists t2;"""
+ sql """drop table if exists t3;"""
+ sql """drop table if exists t4;"""
+
+ sql """create table t1 (c1 int, c11 int) distributed by hash(c1) buckets 3
properties('replication_num' = '1');"""
+ sql """create table t2 (c2 int, c22 int) distributed by hash(c2) buckets 3
properties('replication_num' = '1');"""
+ sql """create table t3 (c3 int, c33 int) distributed by hash(c3) buckets 3
properties('replication_num' = '1');"""
+ sql """create table t4 (c4 int, c44 int) distributed by hash(c4) buckets 3
properties('replication_num' = '1');"""
+
+ sql "insert into t1 values (101, 101)"
+ sql "insert into t2 values (null, null)"
+ sql "insert into t4 values (102, 102)"
+ sql "insert into t4 values (103, 103)"
+
+ /* ******** with one row ******** */
+ qt_basic_1 """explain shape plan select max(case when t1.c1 > 100 then 10
end) from t1;"""
+ qt_basic_2 """explain shape plan select count(case when t1.c1 > 100 then
10 end) from t1;"""
+ qt_basic_3 """explain shape plan select t1.c1, count(case when t1.c1 > 100
then 10 end) from t1 group by t1.c1;"""
+ qt_basic_4 """explain shape plan select max(case when t1.c1 > 100 then 10
end) from t1;"""
+ qt_basic_5 """explain shape plan select count(case when t1.c1 > 100 then
10 end) from t1;"""
+ qt_basic_6 """explain shape plan select t1.c1, count(case when t1.c1 > 100
then 10 end) from t1 group by t1.c1;"""
+
+ /* ******** with one row "null" ******** */
+ qt_basic_2_1 """explain shape plan select max(case when t2.c2 > 100 then
10 end) from t2;"""
+ qt_basic_2_2 """explain shape plan select count(case when t2.c2 > 100 then
10 end) from t2;"""
+ qt_basic_2_3 """explain shape plan select t2.c2, count(case when t2.c2 >
100 then 10 end) from t2 group by t2.c2;"""
+ qt_basic_2_4 """explain shape plan select max(case when t2.c2 > 100 then
10 end) from t2;"""
+ qt_basic_2_5 """explain shape plan select count(case when t2.c2 > 100 then
10 end) from t2;"""
+ qt_basic_2_6 """explain shape plan select t2.c2, count(case when t2.c2 >
100 then 10 end) from t2 group by t2.c2;"""
+
+ /* ******** with empty table ******** */
+ qt_basic_3_1 """explain shape plan select max(case when t3.c3 > 100 then
10 end) from t3;"""
+ qt_basic_3_2 """explain shape plan select count(case when t3.c3 > 100 then
10 end) from t3;"""
+ qt_basic_3_3 """explain shape plan select t3.c3, count(case when t3.c3 >
100 then 10 end) from t3 group by t3.c3;"""
+ qt_basic_3_4 """explain shape plan select max(case when t3.c3 > 100 then
10 end) from t3;"""
+ qt_basic_3_5 """explain shape plan select count(case when t3.c3 > 100 then
10 end) from t3;"""
+ qt_basic_3_6 """explain shape plan select t3.c3, count(case when t3.c3 >
100 then 10 end) from t3 group by t3.c3;"""
+
+ /* ******** with different group table ******** */
+ qt_basic_4_1 """explain shape plan select max(case when t4.c4 > 100 then
10 end) from t4;"""
+ qt_basic_4_2 """explain shape plan select count(case when t4.c4 > 100 then
10 end) from t4;"""
+ qt_basic_4_4 """explain shape plan select t4.c4, count(case when t4.c4 >
100 then 10 end) from t4 group by t4.c4;"""
+ qt_basic_4_4 """explain shape plan select max(case when t4.c4 > 100 then
10 end) from t4;"""
+ qt_basic_4_5 """explain shape plan select count(case when t4.c4 > 100 then
10 end) from t4;"""
+ qt_basic_4_6 """explain shape plan select t4.c4, count(case when t4.c4 >
100 then 10 end) from t4 group by t4.c4;"""
+
+ /* ******** Output ******** */
+
+ /* ******** with one row ******** */
+ order_qt_basic_1 """select max(case when t1.c1 > 100 then 10 end) from
t1;"""
+ order_qt_basic_2 """select count(case when t1.c1 > 100 then 10 end) from
t1;"""
+ order_qt_basic_3 """select t1.c1, count(case when t1.c1 > 100 then 10 end)
from t1 group by t1.c1;"""
+ order_qt_basic_4 """select max(case when t1.c1 > 100 then 10 end) from
t1;"""
+ order_qt_basic_5 """select count(case when t1.c1 > 100 then 10 end) from
t1;"""
+ order_qt_basic_6 """select t1.c1, count(case when t1.c1 > 100 then 10 end)
from t1 group by t1.c1;"""
+
+ /* ******** with one row "null" ******** */
+ order_qt_basic_2_1 """select max(case when t2.c2 > 100 then 10 end) from
t2;"""
+ order_qt_basic_2_2 """select count(case when t2.c2 > 100 then 10 end) from
t2;"""
+ order_qt_basic_2_3 """select t2.c2, count(case when t2.c2 > 100 then 10
end) from t2 group by t2.c2;"""
+ order_qt_basic_2_4 """select max(case when t2.c2 > 100 then 10 end) from
t2;"""
+ order_qt_basic_2_5 """select count(case when t2.c2 > 100 then 10 end) from
t2;"""
+ order_qt_basic_2_6 """select t2.c2, count(case when t2.c2 > 100 then 10
end) from t2 group by t2.c2;"""
+
+ /* ******** with empty table ******** */
+ order_qt_basic_3_1 """select max(case when t3.c3 > 100 then 10 end) from
t3;"""
+ order_qt_basic_3_2 """select count(case when t3.c3 > 100 then 10 end) from
t3;"""
+ order_qt_basic_3_3 """select t3.c3, count(case when t3.c3 > 100 then 10
end) from t3 group by t3.c3;"""
+ order_qt_basic_3_4 """select max(case when t3.c3 > 100 then 10 end) from
t3;"""
+ order_qt_basic_3_5 """select count(case when t3.c3 > 100 then 10 end) from
t3;"""
+ order_qt_basic_3_6 """select t3.c3, count(case when t3.c3 > 100 then 10
end) from t3 group by t3.c3;"""
+
+ /* ******** with different group table ******** */
+ order_qt_basic_4_1 """select max(case when t4.c4 > 100 then 10 end) from
t4;"""
+ order_qt_basic_4_2 """select count(case when t4.c4 > 100 then 10 end) from
t4;"""
+ order_qt_basic_4_4 """select t4.c4, count(case when t4.c4 > 100 then 10
end) from t4 group by t4.c4;"""
+ order_qt_basic_4_4 """select max(case when t4.c4 > 100 then 10 end) from
t4;"""
+ order_qt_basic_4_5 """select count(case when t4.c4 > 100 then 10 end) from
t4;"""
+ order_qt_basic_4_6 """select t4.c4, count(case when t4.c4 > 100 then 10
end) from t4 group by t4.c4;"""
+}
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