dssysolyatin commented on code in PR #2929:
URL: https://github.com/apache/calcite/pull/2929#discussion_r1021396407
##########
core/src/main/java/org/apache/calcite/sql2rel/RelDecorrelator.java:
##########
@@ -1790,10 +1790,11 @@ private RexNode createCaseExpression(
@Override public RexNode visitLiteral(RexLiteral literal) {
// Use nullIndicator to decide whether to project null.
- // Do nothing if the literal is null.
+ // Do nothing if the literal is null or symbol.
if (!RexUtil.isNull(literal)
Review Comment:
Ok, I got why calcite wraps literals if literal is in SELECT list like
`SELEC (SELECT 1 ....)`. But I still don't understand why `CARDINALITY`
arguments should be wrapped in case expression ?
```
CARDINALITY(ARRAY[false, true, a.attidentity = 'a'])
```
In my understanding only CARDINALITY should be wrapped to caseExpression
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