normanj-bitquill commented on code in PR #3797:
URL: https://github.com/apache/calcite/pull/3797#discussion_r1616412430
##########
core/src/main/java/org/apache/calcite/sql/util/SqlShuttle.java:
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@@ -135,6 +136,14 @@ public CallCopyingArgHandler(SqlCall call, boolean
alwaysCopy) {
if (newOperand != operand) {
update = true;
}
+
+ // Prevent nesting AS calls
+ if (i == 0 && expr instanceof SqlCall
Review Comment:
@YiwenWu I have reworked this to much more closely match what you describe
above.
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