xiedeyantu commented on code in PR #4247:
URL: https://github.com/apache/calcite/pull/4247#discussion_r2013160863
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core/src/main/java/org/apache/calcite/sql/dialect/ClickHouseSqlDialect.java:
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@@ -181,6 +188,21 @@ private static SqlDataTypeSpec
createSqlDataTypeSpecByName(String typeAlias,
return;
}
+ if (call.getOperator() instanceof SqlFilterOperator) {
+ SqlCall aggCall = call.operand(0);
+ if (call.getOperandList().size() > 1 && call.operand(1) != null) {
+ SqlCall filterCondition = call.operand(1);
+ String functionName = aggCall.getOperator().getName();
+ writer.print(functionName.toLowerCase(Locale.ROOT) + "If");
Review Comment:
I think what you're saying is another issue, even if CASE WHEN is still
used, if ClickHouse doesn't support STDDEV, then it can't also work. What do
you think about creating another topic if needed?
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