mihaibudiu commented on code in PR #4388:
URL: https://github.com/apache/calcite/pull/4388#discussion_r2094584188
##########
core/src/main/java/org/apache/calcite/sql/validate/SqlValidatorImpl.java:
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@@ -5874,6 +5874,11 @@ private void validateSnapshot(
throw newValidationError(period,
Static.RESOURCE.illegalExpressionForTemporal(dataType.getSqlTypeName().getName()));
}
+ if (ns instanceof IdentifierNamespace && ns.resolve() instanceof
WithItemNamespace) {
+ // If the snapshot is used over a CTE, then we don't have a concrete
underlying
+ // table to operate on. This will be rechecked later in the planner
rules.
Review Comment:
there is no guarantee that any planner rules will be executed after
validation.
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