my7ym commented on a change in pull request #1811: [CALCITE-3789] Support
validation of UNNEST multiple array columns like Presto
URL: https://github.com/apache/calcite/pull/1811#discussion_r403815168
##########
File path: core/src/main/java/org/apache/calcite/sql2rel/SqlToRelConverter.java
##########
@@ -2047,8 +2047,15 @@ protected void convertFrom(
case AS:
call = (SqlCall) from;
- convertFrom(bb, call.operand(0));
- if (call.operandCount() > 2
+ SqlNode firstOperand = call.operand(0);
+
+ if (firstOperand.getKind() == SqlKind.UNNEST) {
+ convertUnnest(bb, (SqlCall) firstOperand, getFieldAliases(call));
+ } else {
+ convertFrom(bb, firstOperand);
+ }
Review comment:
@danny0405 I don't quite get your point. If you are talking about the
decorrelate, I will fix it. But this part of change is not about decorrelate.
Could you elaborate more on how does your fix work in more detail? If it's a
fundamental change, could you please post it in the ticket too? I will also
describe my plan there. Thanks.
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