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branch-4.0: [Enhancement](func) Add fold constant for PREVIOUS_DAY #60755 #60762

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Merged
yiguolei merged 1 commit into from
Feb 14, 2026
+14 −0
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branch-4.0: [Enhancement](func) Add fold constant for PREVIOUS_DAY #60755 #60762

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14 changes: 14 additions & 0 deletions ...che/doris/nereids/trees/expressions/functions/executable/DateTimeExtractAndTransform.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1206,6 +1206,20 @@ public static Expression nextDay(DateV2Literal date, StringLiteral day) {
return date.plusDays(daysToAdd);
}

/**
* date arithmetic function previous_day
*/
@ExecFunction(name = "previous_day")
public static Expression previousDay(DateV2Literal date, StringLiteral day) {
int dayOfWeek = getDayOfWeek(day.getValue());
if (dayOfWeek == 0) {
throw new RuntimeException("Invalid day of week: " + day.getValue());
}
int daysToSub = (date.getDayOfWeek() - dayOfWeek + 7) % 7;
daysToSub = daysToSub == 0 ? 7 : daysToSub;
return date.plusDays(-daysToSub);
}

/**
* date transform function sec_to_time
*/
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