• SQL Server Date Formats


    One of the most frequently asked questions in SQL Server forums is how to format a datetime value or column into a specific date format.  Here's a summary of the different date formats that come standard in SQL Server as part of the CONVERT function.  Following the standard date formats are some extended date formats that are often asked by SQL Server developers.

    It is worth to note that the output of these date formats are of VARCHAR data types already and not of DATETIME data type.  With this in mind, any date comparisons performed after the datetime value has been formatted are using the VARCHAR value of the date and time and not its original DATETIME value.

    Standard Date Formats
    Date Format Standard SQL Statement Sample Output
    Mon DD YYYY 1
    HH:MIAM (or PM)
    Default SELECT CONVERT(VARCHAR(20), GETDATE(), 100) Jan 1 2005 1:29PM 1
    MM/DD/YY USA SELECT CONVERT(VARCHAR(8), GETDATE(), 1) AS [MM/DD/YY] 11/23/98
    MM/DD/YYYY USA SELECT CONVERT(VARCHAR(10), GETDATE(), 101) AS [MM/DD/YYYY] 11/23/1998
    YY.MM.DD ANSI SELECT CONVERT(VARCHAR(8), GETDATE(), 2) AS [YY.MM.DD] 72.01.01
    YYYY.MM.DD ANSI SELECT CONVERT(VARCHAR(10), GETDATE(), 102) AS [YYYY.MM.DD] 1972.01.01
    DD/MM/YY British/French SELECT CONVERT(VARCHAR(8), GETDATE(), 3) AS [DD/MM/YY] 19/02/72
    DD/MM/YYYY British/French SELECT CONVERT(VARCHAR(10), GETDATE(), 103) AS [DD/MM/YYYY] 19/02/1972
    DD.MM.YY German SELECT CONVERT(VARCHAR(8), GETDATE(), 4) AS [DD.MM.YY] 25.12.05
    DD.MM.YYYY German SELECT CONVERT(VARCHAR(10), GETDATE(), 104) AS [DD.MM.YYYY] 25.12.2005
    DD-MM-YY Italian SELECT CONVERT(VARCHAR(8), GETDATE(), 5) AS [DD-MM-YY] 24-01-98
    DD-MM-YYYY Italian SELECT CONVERT(VARCHAR(10), GETDATE(), 105) AS [DD-MM-YYYY] 24-01-1998
    DD Mon YY 1 - SELECT CONVERT(VARCHAR(9), GETDATE(), 6) AS [DD MON YY] 04 Jul 06 1
    DD Mon YYYY 1 - SELECT CONVERT(VARCHAR(11), GETDATE(), 106) AS [DD MON YYYY] 04 Jul 2006 1
    Mon DD, YY 1 - SELECT CONVERT(VARCHAR(10), GETDATE(), 7) AS [Mon DD, YY] Jan 24, 98 1
    Mon DD, YYYY 1 - SELECT CONVERT(VARCHAR(12), GETDATE(), 107) AS [Mon DD, YYYY] Jan 24, 1998 1
    HH:MM:SS - SELECT CONVERT(VARCHAR(8), GETDATE(), 108) 03:24:53
    Mon DD YYYY HH:MI:SS:MMMAM (or PM) 1 Default +
    milliseconds
    SELECT CONVERT(VARCHAR(26), GETDATE(), 109) Apr 28 2006 12:32:29:253PM 1
    MM-DD-YY USA SELECT CONVERT(VARCHAR(8), GETDATE(), 10) AS [MM-DD-YY] 01-01-06
    MM-DD-YYYY USA SELECT CONVERT(VARCHAR(10), GETDATE(), 110) AS [MM-DD-YYYY] 01-01-2006
    YY/MM/DD - SELECT CONVERT(VARCHAR(8), GETDATE(), 11) AS [YY/MM/DD] 98/11/23
    YYYY/MM/DD - SELECT CONVERT(VARCHAR(10), GETDATE(), 111) AS [YYYY/MM/DD] 1998/11/23
    YYMMDD ISO SELECT CONVERT(VARCHAR(6), GETDATE(), 12) AS [YYMMDD] 980124
    YYYYMMDD ISO SELECT CONVERT(VARCHAR(8), GETDATE(), 112) AS [YYYYMMDD] 19980124
    DD Mon YYYY HH:MM:SS:MMM(24h) 1 Europe default + milliseconds SELECT CONVERT(VARCHAR(24), GETDATE(), 113) 28 Apr 2006 00:34:55:190 1
    HH:MI:SS:MMM(24H) - SELECT CONVERT(VARCHAR(12), GETDATE(), 114) AS [HH:MI:SS:MMM(24H)] 11:34:23:013
    YYYY-MM-DD HH:MI:SS(24h) ODBC Canonical SELECT CONVERT(VARCHAR(19), GETDATE(), 120) 1972-01-01 13:42:24
    YYYY-MM-DD HH:MI:SS.MMM(24h) ODBC Canonical
    (with milliseconds)
    SELECT CONVERT(VARCHAR(23), GETDATE(), 121) 1972-02-19 06:35:24.489
    YYYY-MM-DDTHH:MM:SS:MMM ISO8601 SELECT CONVERT(VARCHAR(23), GETDATE(), 126) 1998-11-23T11:25:43:250
    DD Mon YYYY HH:MI:SS:MMMAM 1 Kuwaiti SELECT CONVERT(VARCHAR(26), GETDATE(), 130) 28 Apr 2006 12:39:32:429AM 1
    DD/MM/YYYY HH:MI:SS:MMMAM Kuwaiti SELECT CONVERT(VARCHAR(25), GETDATE(), 131) 28/04/2006 12:39:32:429AM

    Here are some more date formats that does not come standard in SQL Server as part of the CONVERT function.

    Extended Date Formats
    Date Format SQL Statement Sample Output
    YY-MM-DD
    SELECT SUBSTRING(CONVERT(VARCHAR(10), GETDATE(), 120), 3, 8) AS [YY-MM-DD]
    SELECT REPLACE(CONVERT(VARCHAR(8), GETDATE(), 11), '/', '-') AS [YY-MM-DD]
    99-01-24
    YYYY-MM-DD
    SELECT CONVERT(VARCHAR(10), GETDATE(), 120) AS [YYYY-MM-DD]
    SELECT REPLACE(CONVERT(VARCHAR(10), GETDATE(), 111), '/', '-') AS [YYYY-MM-DD]
    1999-01-24
    MM/YY SELECT RIGHT(CONVERT(VARCHAR(8), GETDATE(), 3), 5) AS [MM/YY]
    SELECT SUBSTRING(CONVERT(VARCHAR(8), GETDATE(), 3), 4, 5) AS [MM/YY]
    08/99
    MM/YYYY SELECT RIGHT(CONVERT(VARCHAR(10), GETDATE(), 103), 7) AS [MM/YYYY] 12/2005
    YY/MM SELECT CONVERT(VARCHAR(5), GETDATE(), 11) AS [YY/MM] 99/08
    YYYY/MM SELECT CONVERT(VARCHAR(7), GETDATE(), 111) AS [YYYY/MM] 2005/12
    Month DD, YYYY 1 SELECT DATENAME(MM, GETDATE()) + RIGHT(CONVERT(VARCHAR(12), GETDATE(), 107), 9) AS [Month DD, YYYY] July 04, 2006 1
    Mon YYYY 1 SELECT SUBSTRING(CONVERT(VARCHAR(11), GETDATE(), 113), 4, 8) AS [Mon YYYY] Apr 2006 1
    Month YYYY 1 SELECT DATENAME(MM, GETDATE()) + ' ' + CAST(YEAR(GETDATE()) AS VARCHAR(4)) AS [Month YYYY] February 2006 1
    DD Month 1 SELECT CAST(DAY(GETDATE()) AS VARCHAR(2)) + ' ' + DATENAME(MM, GETDATE()) AS [DD Month] 11 September 1
    Month DD 1 SELECT DATENAME(MM, GETDATE()) + ' ' + CAST(DAY(GETDATE()) AS VARCHAR(2)) AS [Month DD] September 11 1
    DD Month YY 1 SELECT CAST(DAY(GETDATE()) AS VARCHAR(2)) + ' ' + DATENAME(MM, GETDATE()) + ' ' + RIGHT(CAST(YEAR(GETDATE()) AS VARCHAR(4)), 2) AS [DD Month YY] 19 February 72 1
    DD Month YYYY 1 SELECT CAST(DAY(GETDATE()) AS VARCHAR(2)) + ' ' + DATENAME(MM, GETDATE()) + ' ' + CAST(YEAR(GETDATE()) AS VARCHAR(4)) AS [DD Month YYYY] 11 September 2002 1
    MM-YY SELECT RIGHT(CONVERT(VARCHAR(8), GETDATE(), 5), 5) AS [MM-YY]
    SELECT SUBSTRING(CONVERT(VARCHAR(8), GETDATE(), 5), 4, 5) AS [MM-YY]
    12/92
    MM-YYYY SELECT RIGHT(CONVERT(VARCHAR(10), GETDATE(), 105), 7) AS [MM-YYYY] 05-2006
    YY-MM SELECT RIGHT(CONVERT(VARCHAR(7), GETDATE(), 120), 5) AS [YY-MM]
    SELECT SUBSTRING(CONVERT(VARCHAR(10), GETDATE(), 120), 3, 5) AS [YY-MM]
    92/12
    YYYY-MM SELECT CONVERT(VARCHAR(7), GETDATE(), 120) AS [YYYY-MM] 2006-05
    MMDDYY SELECT REPLACE(CONVERT(VARCHAR(10), GETDATE(), 1), '/', '') AS [MMDDYY] 122506
    MMDDYYYY SELECT REPLACE(CONVERT(VARCHAR(10), GETDATE(), 101), '/', '') AS [MMDDYYYY] 12252006
    DDMMYY SELECT REPLACE(CONVERT(VARCHAR(10), GETDATE(), 3), '/', '') AS [DDMMYY] 240702
    DDMMYYYY SELECT REPLACE(CONVERT(VARCHAR(10), GETDATE(), 103), '/', '') AS [DDMMYYYY] 24072002
    Mon-YY 1 SELECT REPLACE(RIGHT(CONVERT(VARCHAR(9), GETDATE(), 6), 6), ' ', '-') AS [Mon-YY] Sep-02 1
    Mon-YYYY 1 SELECT REPLACE(RIGHT(CONVERT(VARCHAR(11), GETDATE(), 106), 8), ' ', '-') AS [Mon-YYYY] Sep-2002 1
    DD-Mon-YY 1 SELECT REPLACE(CONVERT(VARCHAR(9), GETDATE(), 6), ' ', '-') AS [DD-Mon-YY] 25-Dec-05 1
    DD-Mon-YYYY 1 SELECT REPLACE(CONVERT(VARCHAR(11), GETDATE(), 106), ' ', '-') AS [DD-Mon-YYYY] 25-Dec-2005 1

    1 To make the month name in upper case, simply use the UPPER string function.

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  • 原文地址:https://www.cnblogs.com/88223100/p/1256125.html
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