diff options
| -rw-r--r-- | src/include/utils/datetime.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/include/utils/datetime.h b/src/include/utils/datetime.h index 548758a1493..31c78540f28 100644 --- a/src/include/utils/datetime.h +++ b/src/include/utils/datetime.h @@ -274,7 +274,9 @@ extern const int day_tab[2][13]; /* * These are the rules for the Gregorian calendar, which was adopted in 1582. * However, we use this calculation for all prior years as well because the - * SQL standard specifies use of the Gregorian calendar. + * SQL standard specifies use of the Gregorian calendar. This prevents the + * date 1500-02-29 from being stored, even though it is valid in the Julian + * calendar. */ #define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0)) |