fjy closed pull request #6601: SQL: Support AVG on system tables.
URL: https://github.com/apache/incubator-druid/pull/6601
This is a PR merged from a forked repository.
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the sake of provenance:
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diff --git a/sql/src/main/java/org/apache/druid/sql/calcite/planner/Rules.java
b/sql/src/main/java/org/apache/druid/sql/calcite/planner/Rules.java
index 7fa66ef3b42..e5883fad244 100644
--- a/sql/src/main/java/org/apache/druid/sql/calcite/planner/Rules.java
+++ b/sql/src/main/java/org/apache/druid/sql/calcite/planner/Rules.java
@@ -34,6 +34,7 @@
import org.apache.calcite.rel.rules.AggregateJoinTransposeRule;
import org.apache.calcite.rel.rules.AggregateProjectMergeRule;
import org.apache.calcite.rel.rules.AggregateProjectPullUpConstantsRule;
+import org.apache.calcite.rel.rules.AggregateReduceFunctionsRule;
import org.apache.calcite.rel.rules.AggregateRemoveRule;
import org.apache.calcite.rel.rules.AggregateStarTableRule;
import org.apache.calcite.rel.rules.AggregateValuesRule;
@@ -209,6 +210,7 @@ private Rules()
return ImmutableList.<RelOptRule>builder()
.addAll(baseRuleSet(plannerContext, queryMaker))
.addAll(Bindables.RULES)
+ .add(AggregateReduceFunctionsRule.INSTANCE)
.build();
}
diff --git
a/sql/src/test/java/org/apache/druid/sql/calcite/CalciteQueryTest.java
b/sql/src/test/java/org/apache/druid/sql/calcite/CalciteQueryTest.java
index 9261e71679c..89dd10c769f 100644
--- a/sql/src/test/java/org/apache/druid/sql/calcite/CalciteQueryTest.java
+++ b/sql/src/test/java/org/apache/druid/sql/calcite/CalciteQueryTest.java
@@ -610,15 +610,21 @@ public void testExplainInformationSchemaColumns() throws
Exception
}
@Test
- public void testMinOnInformationSchemaColumns() throws Exception
+ public void testAggregatorsOnInformationSchemaColumns() throws Exception
{
+ // Not including COUNT DISTINCT, since it isn't supported by
BindableAggregate, and so it can't work.
testQuery(
- "SELECT MIN(JDBC_TYPE)\n"
+ "SELECT\n"
+ + " COUNT(JDBC_TYPE),\n"
+ + " SUM(JDBC_TYPE),\n"
+ + " AVG(JDBC_TYPE),\n"
+ + " MIN(JDBC_TYPE),\n"
+ + " MAX(JDBC_TYPE)\n"
+ "FROM INFORMATION_SCHEMA.COLUMNS\n"
+ "WHERE TABLE_SCHEMA = 'druid' AND TABLE_NAME = 'foo'",
ImmutableList.of(),
ImmutableList.of(
- new Object[]{-5L}
+ new Object[]{8L, 1249L, 156L, -5L, 1111L}
)
);
}
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