zzzxl1993 commented on code in PR #43643:
URL: https://github.com/apache/doris/pull/43643#discussion_r1843144620
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fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/agg/ApproxTopK.java:
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@@ -55,9 +55,19 @@ public ApproxTopK(boolean distinct, boolean alwaysNullable,
Expression... varArg
@Override
public void checkLegalityBeforeTypeCoercion() {
- if (arity() < 1) {
+ if (arity() < 3) {
Review Comment:
The existing function framework code cannot implement approx_top_k and
approx_top_sum with default values.
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