doris/docs/documentation/cn/sql-reference/sql-functions/date-time-functions/day.md

day

Syntax

INT DAY(DATETIME date)

Description

获得日期中的天信息，返回值范围从1-31。

参数为Date或者Datetime类型

Examples

mysql> select day('1987-01-31');
+----------------------------+
| day('1987-01-31 00:00:00') |
+----------------------------+
|                         31 |
+----------------------------+