Hàm WEEKNUM_ADD

Hàm WEEKNUM tính số thứ tự tuần của năm cho giá trị ngày tháng nội bộ.

note

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.


Syntax

WEEKNUM(Số; Chế_độ)

Số là số của ngày tháng nội bộ.

Chế_độ đặt đầu của tuần và kiểu phép tính.

1 = Chủ Nhật

2 = Monday (ISO 8601)

any other value = Monday (ISO 8601)

note

When entering dates as part of formulas, slashes or dashes used as date separators are interpreted as arithmetic operators. Therefore, dates entered in this format are not recognized as dates and result in erroneous calculations. To keep dates from being interpreted as parts of formulas use the DATE function, for example, DATE(1954;7;20), or place the date in quotation marks and use the ISO 8601 notation, for example, "1954-07-20". Avoid using locale dependent date formats such as "07/20/54", the calculation may produce errors if the document is loaded under different locale settings.


tip

Unambiguous conversion is possible for ISO 8601 dates and times in their extended formats with separators. If a #VALUE! error occurs, then unselect Generate #VALUE! error in - LibreOffice Calc - Formula, button Details... in section "Detailed Calculation Settings", Conversion from text to number list box.


Example

=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.

Date & Time Functions

Hàm DATE

[text/scalc/01/func_datedif.xhp#datedif not found].

Hàm DATEVALUE

Hàm DAY

Hàm DAYS

Hàm DAYS360

Hàm EASTERSUNDAY

Hàm EDATE

Hàm EOMONTH

Hàm HOUR

[text/scalc/01/func_isoweeknum.xhp#isoweeknum not found].

Hàm MINUTE

Hàm MONTH

NETWORKDAYS

NETWORKDAYS.INTL

Hàm NOW

Hàm SECOND

Hàm TIME

Hàm TIMEVALUE

Hàm TODAY

WEEKDAY

Hàm WEEKNUM

Hàm WEEKNUM_ADD

[text/scalc/01/func_weeknum_ooo.xhp#weeknum_ooo not found].

Hàm WORKDAY

WORKDAY.INTL

Hàm YEAR

Hàm YEARFRAC

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