linrrzqqq commented on code in PR #63350:
URL: https://github.com/apache/doris/pull/63350#discussion_r3263405552
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/agg/TopNArray.java:
##########
@@ -100,6 +101,19 @@ public void checkLegalityBeforeTypeCoercion() {
}
}
+ @Override
+ public void checkLegalityAfterRewrite() {
+ Expression topNCount = getArgument(1);
+ if (topNCount.isNullLiteral()) {
+ return;
+ }
+ if (!(topNCount instanceof Literal) || ((Literal)
topNCount).getDouble() <= 0) {
+ throw new AnalysisException(
+ "topn_array requires second parameter must be a constant
positive integer: "
Review Comment:
溢出值到这里已经够被转成 null 了
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