mihaibudiu commented on code in PR #4331:
URL: https://github.com/apache/calcite/pull/4331#discussion_r2058836217
##########
core/src/main/java/org/apache/calcite/rel/rel2sql/SqlImplementor.java:
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@@ -350,6 +350,15 @@ public static SqlNode convertConditionToSqlNode(RexNode
node,
*/
private static RexNode stripCastFromString(RexNode node, SqlDialect dialect)
{
switch (node.getKind()) {
+ case IS_NULL:
+ case IS_NOT_NULL:
+ final RexCall call0 = (RexCall) node;
+ final RexNode o = call0.operands.get(0);
+ if (o.getKind() == SqlKind.CAST) {
Review Comment:
I don't know if this is accurate.
For example, a CAST(VARIANT AS TYPE) will return NULL if the VARIANT object
does not store a value of the specified type.
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