xzh_dz created CALCITE-4198:
-------------------------------
Summary: Query contains AVG function, materialized view contains
SUM and COUNT functions, and materialized recognition fails
Key: CALCITE-4198
URL: https://issues.apache.org/jira/browse/CALCITE-4198
Project: Calcite
Issue Type: Wish
Reporter: xzh_dz
There is a semantic equivalent case, which should be able to materialize and
identify successfully, materialized view can express the calculation logic of
query,but failed. This case can be reproduced as below.
{code:java}
// MaterializedViewSubstitutionVisitorTest
@Test void testAvgMvMatch() {
sql(
"select \"empid\", sum(\"salary\"), count(\"salary\") from \"emps\" where
\"empid\" > 10 group by \"empid\"",
"select \"empid\", avg(\"salary\") from \"emps\" where \"empid\" > 10
group by \"empid\"")
.ok();
}
{code}
The error message：
{code:java}
java.lang.AssertionError: Materialized view failed to be matched by optimized
results:java.lang.AssertionError: Materialized view failed to be matched by
optimized results: at
org.apache.calcite.test.AbstractMaterializedViewTest.checkMaterialize(AbstractMaterializedViewTest.java:112)
at
org.apache.calcite.test.AbstractMaterializedViewTest.access$000(AbstractMaterializedViewTest.java:64)
at
org.apache.calcite.test.AbstractMaterializedViewTest$Sql.ok(AbstractMaterializedViewTest.java:227)
at java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:627) at
org.apache.calcite.util.ImmutableBeans.lambda$makeDef$3(ImmutableBeans.java:275)
at
org.apache.calcite.util.ImmutableBeans$BeanImpl.invoke(ImmutableBeans.java:446)
at com.sun.proxy.$Proxy12.ok(Unknown Source) at
org.apache.calcite.test.MaterializedViewSubstitutionVisitorTest.testAvgMvMatch(MaterializedViewSubstitutionVisitorTest.java:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
{code}
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