zhiqiang-hhhh commented on code in PR #47940:
URL: https://github.com/apache/doris/pull/47940#discussion_r1958948770
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/analysis/WindowFunctionChecker.java:
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@@ -241,7 +241,7 @@ public Lag visitLag(Lag lag, Void ctx) {
windowExpression.getWindowFrame().ifPresent(wf -> {
throw new AnalysisException("WindowFrame for LAG() must be null");
});
- if (lag.children().size() != 3) {
+ if (lag.children().size() < 1 || lag.children().size() > 3) {
throw new AnalysisException("Lag must have three parameters");
Review Comment:
error message should update
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