suibianwanwank commented on code in PR #4077:
URL: https://github.com/apache/calcite/pull/4077#discussion_r1871305186
##########
core/src/test/java/org/apache/calcite/sql2rel/RelFieldTrimmerTest.java:
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@@ -544,4 +548,36 @@ public static Frameworks.ConfigBuilder config() {
+ " LogicalTableScan(table=[[scott, EMP]])\n";
assertThat(trimmed, hasTree(expected));
}
+
+ @Test void testLogicalCorrelateFieldTrimmer() {
+ final RelBuilder builder = RelBuilder.create(config().build());
+ final Holder<@Nullable RexCorrelVariable> v = Holder.empty();
+ RelNode root = builder.scan("EMP")
+ .projectPlus(builder.call(SqlStdOperatorTable.PLUS, builder.field(0),
builder.field(0)))
+ .variable(v::set)
+ .scan("DEPT")
+ .filter(
+ builder.equals(builder.field(0),
+ builder.call(
+ SqlStdOperatorTable.PLUS,
+ builder.literal(10),
+ builder.field(v.get(), "DEPTNO"))))
+ .correlate(JoinRelType.LEFT, v.get().id, builder.field(2, 0, "DEPTNO"))
+ .aggregate(builder.groupKey("ENAME"),
builder.max(builder.field("EMPNO")))
+ .build();
+
+ final RelFieldTrimmer fieldTrimmer = new RelFieldTrimmer(null, builder);
+ final RelNode trimmed = fieldTrimmer.trim(root);
+ final String expected = ""
Review Comment:
Can you add a more generalized example, where both left and right are SCAN
and are correlate by some field, and both left and right be trimmed.
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