xzh_dz created CALCITE-4800:
-------------------------------
Summary: Add SortToSortUnifyRule in SubstitutionVisitor
Key: CALCITE-4800
URL: https://issues.apache.org/jira/browse/CALCITE-4800
Project: Calcite
Issue Type: Improvement
Reporter: xzh_dz
In my project, there are more usage scenarios for materialized view
recognition, and the `Sort Operator` can help sort data sets.But it has not
been supported yet.A `Sort Operator` failed example can be reproduced as
follows.
{code:java}
// code placeholder
org.apache.calcite.test.MaterializedViewSubstitutionVisitorTest
@Test void testSortToSort() {
final String mv = ""
+ "select \"name\", \"deptno\"\n"
+ "from \"emps\"\n"
+ "order by \"deptno\"";
final String query = ""
+ "select \"name\", \"deptno\"\n"
+ "from \"emps\"\n"
+ "order by \"deptno\" desc";
sql(mv, query).withChecker(
resultContains(""
+ "EnumerableTableScan(table=[[hr, MV0]])")).ok();
}
{code}
Exception:
{code:java}
// code placeholder
Materialized view failed to be matched by optimized results: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:116)
at
org.apache.calcite.test.AbstractMaterializedViewTest.access$000(AbstractMaterializedViewTest.java:67)
at
org.apache.calcite.test.AbstractMaterializedViewTest$Sql.ok(AbstractMaterializedViewTest.java:229)
at java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:627) at
org.apache.calcite.util.ImmutableBeans.lambda$makeDef$3(ImmutableBeans.java:299)
{code}
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