WEEKNUM_ADD
WEEKNUM 计算内部日期值中一年的周数。
This function exists for interoperability with LibreOffice releases older than 5.1.0 and OpenOffice.org. It calculates week numbers for a week numbering system in that week number 1 is the week that contains the January 4th. This function does not provide interoperability with other spreadsheet applications. For new documents use the WEEKNUM or ISOWEEKNUM function instead.
语法
WEEKNUM(Number; Mode)
value是日期的内部序列数。
mode 参数指定的是计算方式,即指定哪一天应该是每周的第一天。
1 = 星期天
2 = Monday (ISO 8601)
any other value = Monday (ISO 8601)
示例
=WEEKNUM_OOO(DATE(1995;1;1);1) returns 1
=WEEKNUM_OOO(DATE(1995;1;1);2) returns 52. Week 1 starts on Monday, 1995-01-02.