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ASP FAQ Tutorials :: Databases :: Other Articles :: What are the valid styles for converting datetime to string?
What are the valid styles for converting datetime to string?
I wrote this little table and procedure to help me remember what style 112 did, or how to get HH:MM AM/PM out of a DATETIME column. Basically, it populates a table with the valid style numbers, then loops through those, and produces the result (and the syntax for producing that result) for each style, given the current date and time.
Yes, it uses a cursor. This is designed to be a helper function, not something you would use as part of a production environment, so I don't think the performance implications should be a big concern. But if you have
The output should look like this:
Yes, it uses a cursor. This is designed to be a helper function, not something you would use as part of a production environment, so I don't think the performance implications should be a big concern. But if you have
| USE tempdb; GO CREATE PROCEDURE dbo.help_DateTimeFormats @styleID TINYINT = NULL AS BEGIN SET NOCOUNT ON; IF OBJECTPROPERTY ( OBJECT_ID('dbo.DateTimeFormats'), 'IsUserTable' ) = 1 BEGIN DROP TABLE dbo.DateTimeFormats; END CREATE TABLE dbo.DateTimeFormats ( styleID TINYINT PRIMARY KEY, outputLength TINYINT, outputSyntax VARCHAR(64), outputSample VARCHAR(255) ); INSERT dbo.DateTimeFormats(styleID, outputLength) SELECT style = 0, outputLength = 19 UNION SELECT 1, 8 UNION SELECT 2, 8 UNION SELECT 3, 8 UNION SELECT 4, 8 UNION SELECT 5, 8 UNION SELECT 6, 9 UNION SELECT 7, 10 UNION SELECT 8, 8 UNION SELECT 9, 26 UNION SELECT 10, 8 UNION SELECT 11, 8 UNION SELECT 12, 6 UNION SELECT 13, 24 UNION SELECT 14, 12 UNION SELECT 20, 19 UNION SELECT 21, 23 UNION SELECT 22, 20 UNION SELECT 23, 10 UNION SELECT 24, 8 UNION SELECT 25, 23 UNION SELECT 100, 19 UNION SELECT 101, 10 UNION SELECT 102, 10 UNION SELECT 103, 10 UNION SELECT 104, 10 UNION SELECT 105, 10 UNION SELECT 106, 11 UNION SELECT 107, 12 UNION SELECT 108, 8 UNION SELECT 109, 26 UNION SELECT 110, 10 UNION SELECT 111, 10 UNION SELECT 112, 8 UNION SELECT 113, 24 UNION SELECT 114, 12 UNION SELECT 120, 19 UNION SELECT 121, 23 UNION SELECT 126, 23 UNION SELECT 130, 32 UNION SELECT 131, 25; IF CHARINDEX('SQL Server 2005', @@VERSION) > 0 INSERT dbo.DateTimeFormats(styleID, outputLength) SELECT 127, 23; -- 127 is new in 2005 UPDATE dbo.DateTimeFormats SET outputSyntax = 'CONVERT(CHAR(' + RTRIM(outputLength) + '), CURRENT_TIMESTAMP, ' + RTRIM(styleID) + ')'; DECLARE @sql VARCHAR(1024), @style TINYINT, @syntax VARCHAR(64); DECLARE c CURSOR LOCAL FORWARD_ONLY STATIC READ_ONLY FOR SELECT styleID, outputSyntax FROM dbo.DateTimeFormats; OPEN c; FETCH NEXT FROM c INTO @style, @syntax; WHILE (@@FETCH_STATUS = 0) BEGIN SET @sql = 'UPDATE dbo.DateTimeFormats SET outputSample = ' + @syntax + ' WHERE styleID = ' + RTRIM(@style) + ';'; EXEC(@sql); FETCH NEXT FROM c INTO @style, @syntax; END CLOSE c; DEALLOCATE c; SELECT styleID, outputSample, outputSyntax FROM dbo.DateTimeFormats WHERE styleID = COALESCE(@styleID, styleID); DROP TABLE dbo.DateTimeFormats; END GO EXEC dbo.help_DateTimeFormats; EXEC dbo.help_DateTimeFormats @styleID = 112; -- DROP PROCEDURE dbo.help_DateTimeFormats; |
The output should look like this:
| 0 | Feb 22 2006 4:26PM | CONVERT(CHAR(19), CURRENT_TIMESTAMP, 0) |
| 1 | 02/22/06 | CONVERT(CHAR(8), CURRENT_TIMESTAMP, 1) |
| 2 | 06.02.22 | CONVERT(CHAR(8), CURRENT_TIMESTAMP, 2) |
| 3 | 22/02/06 | CONVERT(CHAR(8), CURRENT_TIMESTAMP, 3) |
| 4 | 22.02.06 | CONVERT(CHAR(8), CURRENT_TIMESTAMP, 4) |
| 5 | 22-02-06 | CONVERT(CHAR(8), CURRENT_TIMESTAMP, 5) |
| 6 | 22 Feb 06 | CONVERT(CHAR(9), CURRENT_TIMESTAMP, 6) |
| 7 | Feb 22, 06 | CONVERT(CHAR(10), CURRENT_TIMESTAMP, 7) |
| 8 | 16:26:08 | CONVERT(CHAR(8), CURRENT_TIMESTAMP, 8) |
| 9 | Feb 22 2006 4:26:08:020PM | CONVERT(CHAR(26), CURRENT_TIMESTAMP, 9) |
| 10 | 02-22-06 | CONVERT(CHAR(8), CURRENT_TIMESTAMP, 10) |
| 11 | 06/02/22 | CONVERT(CHAR(8), CURRENT_TIMESTAMP, 11) |
| 12 | 060222 | CONVERT(CHAR(6), CURRENT_TIMESTAMP, 12) |
| 13 | 22 Feb 2006 16:26:08:020 | CONVERT(CHAR(24), CURRENT_TIMESTAMP, 13) |
| 14 | 16:26:08:037 | CONVERT(CHAR(12), CURRENT_TIMESTAMP, 14) |
| 20 | 2006-02-22 16:26:08 | CONVERT(CHAR(19), CURRENT_TIMESTAMP, 20) |
| 21 | 2006-02-22 16:26:08.037 | CONVERT(CHAR(23), CURRENT_TIMESTAMP, 21) |
| 22 | 02/22/06 4:26:08 PM | CONVERT(CHAR(20), CURRENT_TIMESTAMP, 22) |
| 23 | 2006-02-22 | CONVERT(CHAR(10), CURRENT_TIMESTAMP, 23) |
| 24 | 16:26:08 | CONVERT(CHAR(8), CURRENT_TIMESTAMP, 24) |
| 25 | 2006-02-22 16:26:08.037 | CONVERT(CHAR(23), CURRENT_TIMESTAMP, 25) |
| 100 | Feb 22 2006 4:26PM | CONVERT(CHAR(19), CURRENT_TIMESTAMP, 100) |
| 101 | 02/22/2006 | CONVERT(CHAR(10), CURRENT_TIMESTAMP, 101) |
| 102 | 2006.02.22 | CONVERT(CHAR(10), CURRENT_TIMESTAMP, 102) |
| 103 | 22/02/2006 | CONVERT(CHAR(10), CURRENT_TIMESTAMP, 103) |
| 104 | 22.02.2006 | CONVERT(CHAR(10), CURRENT_TIMESTAMP, 104) |
| 105 | 22-02-2006 | CONVERT(CHAR(10), CURRENT_TIMESTAMP, 105) |
| 106 | 22 Feb 2006 | CONVERT(CHAR(11), CURRENT_TIMESTAMP, 106) |
| 107 | Feb 22, 2006 | CONVERT(CHAR(12), CURRENT_TIMESTAMP, 107) |
| 108 | 16:26:08 | CONVERT(CHAR(8), CURRENT_TIMESTAMP, 108) |
| 109 | Feb 22 2006 4:26:08:067PM | CONVERT(CHAR(26), CURRENT_TIMESTAMP, 109) |
| 110 | 02-22-2006 | CONVERT(CHAR(10), CURRENT_TIMESTAMP, 110) |
| 111 | 2006/02/22 | CONVERT(CHAR(10), CURRENT_TIMESTAMP, 111) |
| 112 | 20060222 | CONVERT(CHAR(8), CURRENT_TIMESTAMP, 112) |
| 113 | 22 Feb 2006 16:26:08:067 | CONVERT(CHAR(24), CURRENT_TIMESTAMP, 113) |
| 114 | 16:26:08:067 | CONVERT(CHAR(12), CURRENT_TIMESTAMP, 114) |
| 120 | 2006-02-22 16:26:08 | CONVERT(CHAR(19), CURRENT_TIMESTAMP, 120) |
| 121 | 2006-02-22 16:26:08.080 | CONVERT(CHAR(23), CURRENT_TIMESTAMP, 121) |
| 126 | 2006-02-22T16:26:08.080 | CONVERT(CHAR(23), CURRENT_TIMESTAMP, 126) |
| 127 | 2006-02-22T16:26:08.080 | CONVERT(CHAR(23), CURRENT_TIMESTAMP, 127) |
| 130 | 24 ???? 1427 4:26:08:080PM | CONVERT(CHAR(32), CURRENT_TIMESTAMP, 130) |
| 131 | 24/01/1427 4:26:08:080PM | CONVERT(CHAR(25), CURRENT_TIMESTAMP, 131) |
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