kgyrtkirk commented on a change in pull request #2815:
URL: https://github.com/apache/hive/pull/2815#discussion_r756292875
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/HivePointLookupOptimizerRule.java
##########
@@ -655,6 +665,26 @@ private static RexNode handleAND(RexBuilder rexBuilder,
RexCall call) {
return RexUtil.composeConjunction(rexBuilder, newOperands, false);
}
+ /**
+ * Check if the type of nodes in the two collections is homogeneous within
the collections
+ * and identical between them.
+ * @param nodes1 the first collection of nodes
+ * @param nodes2 the second collection of nodes
+ * @return true if nodes in both collections is unique and identical,
false otherwise
+ */
+ private static boolean shareSameType(Collection<RexNode> nodes1,
Collection<RexNode> nodes2) {
+ Set<SqlTypeName> types1 = nodes1.stream()
Review comment:
I'm wondering if its possible to logically union `nodes1` and `nodes2`
together - that way this could become a one liner method :)
##########
File path: ql/src/test/queries/clientpositive/cbo_case_when_wrong_type.q
##########
@@ -0,0 +1,20 @@
+create external table test_case (row_seq smallint, row_desc string) stored as
parquet;
Review comment:
can we also add a simpler testcase like:
```
explain select 1 from t where a in (1,2,3) and case a when 1S then true when
2S then true end;
```
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