formatdatetime function mysql (date sub function)

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The formatdateTime() function returns an expression that has been formatted as a date or time expression formatdateTime(Date, [, Namedformat]) Allowed data types: Namedformat A numeric value indicating the date/time format used, ifIf omitted, vbGeneralDate is used.

The setting values ​​of the NamedFormat parameter are as follows: Constant Value Description vbGeneralDate 0 Displays the date and/or time.If there is a date part, it is displayed in short date format.If there is a time part, it is displayed in long time format.If both are present, both parts are displayed.vbLongDate 1 Displays the date in the long date format specified in the computer's locale value.vbShortDate 2 Displays the date in the short date format specified in the computer's locale value.vbLongTime 3 Displays the time in the time format specified in the computer's locale value.vbShortTime 4 Displays the time in 24-hour format (hh:mm).

The

Format parameter is a format string.DateTime is a time type.The return value is a formatted string, focusing on the command characters in the Format parameter:

c Display time in short time format, that is, all numbers are represented FormatdateTime('c',now); The output is: 2004-8-7 9:55:40

d corresponds to the date in the time, if the date is one digit, it will display one digit, and if it is two digits, it will display two digits.FormatdateTime('dd',now) is always displayed in two digits; the output may be 01～31 ddd displays the day of the week FormatdateTime('ddd',now); The output is: Saturday dddd and ddd display the same.But the above two may be different if they are in other countries.ddddd Displays the year, month and day in a short time format FormatdateTime('ddddd',now); The output is: 2004-8-7 dddddd Displays the year, month and day in a long time format FormatdateTime('dddddd',now); The output is: August 2004July 7

e/ee/eee/eeee Displays the year in the corresponding digits FormatdateTime('ee',now); The output is: 04 (representing the year 04)

m/mm/mmm/mmmm means month FormatdateTime('m',now); output is: 8 FormatdateTime('mm',now); output is 08 FormatdateTime('mmm',now); output is AugustFormatdateTime('mmmm',now); output for August same as ddd/dddd, may be different in other countries

yy/yyyy means year FormatdateTime('yy',now); output is 04 FormatdateTime('yyyy',now); output is 2004

h/hh,n/nn,s/ss,z/zzz represent hours, minutes, seconds, milliseconds respectively t display time in short time format FormatdateTime('t',now); The output is 10:17 tt withLong format display time FormatdateTime('tt',now); The output is 10:18:46

ampm display am or pm in long format FormatdateTime('ttampm',now); output: 10:22:57 am

If you want to add a normal string to Format, you can use double quotes to separate those special characters, so that if the normal string contains special characters, it will not be displayed as a time format: FormatdateTime('"today is” c',now); the output is: today is 2004-8-7 10:26:58

You can also add "-" or "/" to the time to separate the date: FormatdateTime('"today is" yy-mm-dd',now); FormatdateTime('"today is" yy/mm/dd',now); the output is: today is 04-08-07

You can also use ":" to separate the time FormatdateTime('"today is" hh:nn:ss',now); The output is: today is 10:32:23

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