chunweilei commented on a change in pull request #1099: [CALCITE-2908]
Implement SQL LAST_DAY function
URL: https://github.com/apache/calcite/pull/1099#discussion_r264487812
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File path: core/src/main/java/org/apache/calcite/runtime/SqlFunctions.java
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@@ -1924,6 +1924,22 @@ public static int truncate(int v, int x) {
return v - remainder;
}
+ /** SQL {@code LAST_DAY} function. */
+ public static int lastDay(int date) {
+ int y0 = (int) DateTimeUtils.unixDateExtract(TimeUnitRange.YEAR, date);
+ int m0 = (int) DateTimeUtils.unixDateExtract(TimeUnitRange.MONTH, date);
+ int last = lastDay(y0, m0);
+ return DateTimeUtils.ymdToUnixDate(y0, m0, last);
+ }
+
+ public static int lastDay(long timestamp) {
Review comment:
Ok.
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