How to convert from string to datetime in sql server? - Sealyu - BlogJava
2010-10-08 11:52
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How to convert from string to datetime in sql server? - Sealyu - BlogJava
Execute the following T-SQL scripts in Microsoft SQL Server Manangement Studio Query Editor to demonstrate T-SQL convert and cast functions in transforming string date, string time & string datetime data to datetime data type. Other datetime manipulation examples are presented as well. -- Microsoft SQL Server string to date conversion - datetime string format sql server -- MSSQL string to datetime conversion - convert char to date sql server -- Subtract 100 from style number (format) for yy instead yyyy (or ccyy with century) SELECT convert(datetime, 'Oct 23 2012 11:01AM', 100) -- mon dd yyyy hh:mmAM (or PM) SELECT convert(datetime, 'Oct 23 2012 11:01AM') -- 2012-10-23 11:01:00.000 -- Without century (yy) string date conversion - convert string to datetime SELECT convert(datetime, 'Oct 23 12 11:01AM', 0) -- mon dd yy hh:mmAM (or PM) SELECT convert(datetime, 'Oct 23 12 11:01AM') -- 2012-10-23 11:01:00.000 -- Convert string to datetime sql - convert string to date sql - sql dates format -- T-SQL convert string to datetime - SQL Server convert string to date SELECT convert(datetime, '10/23/2016', 101) -- mm/dd/yyyy SELECT convert(datetime, '2016.10.23', 102) -- yyyy.mm.dd SELECT convert(datetime, '23/10/2016', 103) -- dd/mm/yyyy SELECT convert(datetime, '23.10.2016', 104) -- dd.mm.yyyy SELECT convert(datetime, '23-10-2016', 105) -- dd-mm-yyyy -- mon types are nondeterministic conversions, dependent on language setting SELECT convert(datetime, '23 OCT 2016', 106) -- dd mon yyyy SELECT convert(datetime, 'Oct 23, 2016', 107) -- mon dd, yyyy -- 2016-10-23 00:00:00.000 SELECT convert(datetime, '20:10:44', 108) -- hh:mm:ss -- 1900-01-01 20:10:44.000 -- mon dd yyyy hh:mm:ss:mmmAM (or PM) - sql time format SELECT convert(datetime, 'Oct 23 2016 11:02:44:013AM', 109) -- 2016-10-23 11:02:44.013 SELECT convert(datetime, '10-23-2016', 110) -- mm-dd-yyyy SELECT convert(datetime, '2016/10/23', 111) -- yyyy/mm/dd SELECT convert(datetime, '20161023', 112) -- yyyymmdd -- 2016-10-23 00:00:00.000 SELECT convert(datetime, '23 Oct 2016 11:02:07:577', 113) -- dd mon yyyy hh:mm:ss:mmm -- 2016-10-23 11:02:07.577 SELECT convert(datetime, '20:10:25:300', 114) -- hh:mm:ss:mmm(24h) -- 1900-01-01 20:10:25.300 SELECT convert(datetime, '2016-10-23 20:44:11', 120) -- yyyy-mm-dd hh:mm:ss(24h) -- 2016-10-23 20:44:11.000 SELECT convert(datetime, '2016-10-23 20:44:11.500', 121) -- yyyy-mm-dd hh:mm:ss.mmm -- 2016-10-23 20:44:11.500 SELECT convert(datetime, '2008-10-23T18:52:47.513', 126) -- yyyy-mm-ddThh:mm:ss.mmm -- 2008-10-23 18:52:47.513 -- Convert DDMMYYYY format to datetime SELECT convert(datetime, STUFF(STUFF('31012016',3,0,'-'),6,0,'-'), 105) -- 2016-01-31 00:00:00.000
-- SQL string to datetime conversion without century - some exceptions SELECT convert(datetime, '10/23/16', 1) -- mm/dd/yy SELECT convert(datetime, '16.10.23', 2) -- yy.mm.dd SELECT convert(datetime, '23/10/16', 3) -- dd/mm/yy SELECT convert(datetime, '23.10.16', 4) -- dd.mm.yy SELECT convert(datetime, '23-10-16', 5) -- dd-mm-yy SELECT convert(datetime, '23 OCT 16', 6) -- dd mon yy SELECT convert(datetime, 'Oct 23, 16', 7) -- mon dd, yy SELECT convert(datetime, '20:10:44', 8) -- hh:mm:ss SELECT convert(datetime, 'Oct 23 16 11:02:44:013AM', 9) SELECT convert(datetime, '10-23-16', 10) -- mm-dd-yy SELECT convert(datetime, '16/10/23', 11) -- yy/mm/dd SELECT convert(datetime, '161023', 12) -- yymmdd SELECT convert(datetime, '23 Oct 16 11:02:07:577', 13) -- dd mon yy hh:mm:ss:mmm SELECT convert(datetime, '20:10:25:300', 14) -- hh:mm:ss:mmm(24h) SELECT convert(datetime, '2016-10-23 20:44:11',20) -- yyyy-mm-dd hh:mm:ss(24h) SELECT convert(datetime, '2016-10-23 20:44:11.500', 21) -- yyyy-mm-dd hh:mm:ss.mmm ------------ -- SQL Datetime Data Type: Combine date & time string into datetime - sql hh mm ss -- String to datetime - mssql datetime - sql convert date - sql concatenate string DECLARE @DateTimeValue varchar(32), @DateValue char(8), @TimeValue char(6) SELECT @DateValue = '20120718', @TimeValue = '211920' SELECT @DateTimeValue = convert(varchar, convert(datetime, @DateValue), 111) + ' ' + substring(@TimeValue, 1, 2) + ':' + substring(@TimeValue, 3, 2) + ':' + substring(@TimeValue, 5, 2) SELECT DateInput = @DateValue, TimeInput = @TimeValue, DateTimeOutput = @DateTimeValue; /* DateInput TimeInput DateTimeOutput 20120718 211920 2012/07/18 21:19:20 */ -- SQL convert seconds to HH:MM:SS - sql times format - sql hh mm DECLARE @Seconds INT SET @Seconds = 20000 SELECT HH = @Seconds / 3600, MM = (@Seconds%3600) / 60, SS = (@Seconds%60) GO /* HH MM SS 5 33 20 */
------------ -- SQL Server 2008 convert datetime to date - sql yyyy mm dd SELECT TOP (3) OrderDate = CONVERT(date, OrderDate), Today = CONVERT(date, getdate()) FROM AdventureWorks2008.Sales.SalesOrderHeader ORDER BY newid(); /* OrderDate Today 2003-07-09 2012-06-18 2003-09-26 2012-06-18 2004-02-15 2012-06-18 */ ------------ -- SQL date yyyy mm dd - sqlserver yyyy mm dd - date format yyyymmdd SELECT CONVERT(VARCHAR(10), GETDATE(), 111) AS [YYYY/MM/DD] /* YYYY/MM/DD 2015/07/11 */ SELECT CONVERT(VARCHAR(10), GETDATE(), 112) AS [YYYYMMDD] /* YYYYMMDD 20150711 */ SELECT REPLACE(CONVERT(VARCHAR(10), GETDATE(), 111),'/',' ') AS [YYYY MM DD] /* YYYY MM DD 2015 07 11 */ ------------ -- SQL convert date string to datetime - time set to 00:00:00.000 or 12:00AM PRINT CONVERT(datetime,'07-10-2012',110) -- Jul 10 2012 12:00AM PRINT CONVERT(datetime,'2012/07/10',111) -- Jul 10 2012 12:00AM PRINT CONVERT(datetime,'20120710', 112) -- Jul 10 2012 12:00AM ------------ -- String to date conversion - sql date yyyy mm dd - sql date formatting -- SQL Server cast string to date - sql convert date to datetime SELECT [Date] = CAST (@DateValue AS datetime) GO -- 2012-07-18 00:00:00.000 -- SQL convert string date to different style - sql date string formatting SELECT CONVERT(varchar, CONVERT(datetime, '20140508'), 100) -- May 8 2014 12:00AM -- SQL Server convert date to integer DECLARE @Date datetime SET @Date = getdate() SELECT DateAsInteger = CAST (CONVERT(varchar,@Date,112) as INT) -- Result: 20161225 -- SQL Server convert integer to datetime DECLARE @iDate int SET @iDate = 20151225 SELECT IntegerToDatetime = CAST(convert(varchar,@iDate) as datetime) GO
-- 2015-12-25 00:00:00.000 -- Alternates: date-only datetime values -- SQL Server floor date - sql convert datetime SELECT [DATE-ONLY]=CONVERT(DATETIME, FLOOR(CONVERT(FLOAT, GETDATE()))) SELECT [DATE-ONLY]=CONVERT(DATETIME, FLOOR(CONVERT(MONEY, GETDATE()))) -- SQL Server cast string to datetime -- SQL Server datetime to string convert SELECT [DATE-ONLY]=CAST(CONVERT(varchar, GETDATE(), 101) AS DATETIME) -- SQL Server dateadd function - T-SQL datediff function -- SQL strip time from date - MSSQL strip time from datetime SELECT getdate() ,DATEADD(dd, DATEDIFF(dd, 0, getdate()), 0) -- Results: 2016-01-23 05:35:52.793 2016-01-23 00:00:00.000 -- String date - 10 bytes of storage SELECT [STRING DATE]=CONVERT(varchar, GETDATE(), 110) SELECT [STRING DATE]=CONVERT(varchar, CURRENT_TIMESTAMP, 110) -- Same results: 01-02-2012 -- SQL Server cast datetime as string - sql datetime formatting SELECT stringDateTime=CAST (getdate() as varchar) --Result: Dec 29 2012 3:47AM ---------- -- SQL date range between ---------- -- SQL date range select - date range search -- T-SQL date range query - sql date ranges -- Count Sales Orders for 2003 OCT-NOV DECLARE @StartDate DATETIME, @EndDate DATETIME SET @StartDate = convert(DATETIME,'10/01/2003',101) SET @EndDate = convert(DATETIME,'11/30/2003',101) SELECT @StartDate, @EndDate -- 2003-10-01 00:00:00.000 2003-11-30 00:00:00.000 SELECT DATEADD(DAY,1,@EndDate), DATEADD(ms,-3,DATEADD(DAY,1,@EndDate)) -- 2003-12-01 00:00:00.000 2003-11-30 23:59:59.997 -- MSSQL date range select using >= and < SELECT [Sales Orders for 2003 OCT-NOV] = COUNT(* ) FROM Sales.SalesOrderHeader WHERE OrderDate >= @StartDate AND OrderDate < DATEADD(DAY,1,@EndDate) /* Sales Orders for 2003 OCT-NOV 3668 */ -- Equivalent date range query using BETWEEN comparison -- It requires a bit of trick programming SELECT [Sales Orders for 2003 OCT-NOV] = COUNT(* ) FROM Sales.SalesOrderHeader WHERE OrderDate BETWEEN @StartDate AND DATEADD(ms,-3,DATEADD(DAY,1,@EndDate)) -- 3668 GO USE AdventureWorks; -- SQL between string dates SELECT POs=COUNT(*) FROM Purchasing.PurchaseOrderHeader WHERE OrderDate BETWEEN '20040201' AND '20040210' -- Result: 108 -- BETWEEN is equivalent to >=...AND....<= SELECT POs=COUNT(*) FROM Purchasing.PurchaseOrderHeader WHERE OrderDate BETWEEN '2004-02-01 00:00:00.000' AND '2004-02-10 00:00:00.000' /* Orders with OrderDates '2004-02-10 00:00:01.000' - 1 second after midnight (12:00AM) '2004-02-10 00:01:00.000' - 1 minute after midnight '2004-02-10 01:00:00.000' - 1 hour after midnight are not included in the two queries above. */ -- To include the entire day of 2004-02-10 use: SELECT POs=COUNT(*) FROM Purchasing.PurchaseOrderHeader WHERE OrderDate >= '20040201' AND OrderDate < '20040211' ---------- -- Date validation function ISDATE - returns 1 or 0 -- SQL datetime functions ------------ DECLARE @StringDate varchar(32) SET @StringDate = '2011-03-15 18:50' IF EXISTS( SELECT * WHERE ISDATE(@StringDate) = 1) PRINT 'VALID DATE: ' + @StringDate ELSE PRINT 'INVALID DATE: ' + @StringDate GO -- Result: VALID DATE: 2011-03-15 18:50 DECLARE @StringDate varchar(32) SET @StringDate = '20112-03-15 18:50' IF EXISTS( SELECT * WHERE ISDATE(@StringDate) = 1) PRINT 'VALID DATE: ' + @StringDate ELSE PRINT 'INVALID DATE: ' + @StringDate GO -- Result: INVALID DATE: 20112-03-15 18:50 -- Selected named date styles
------------ DECLARE @DateTimeValue varchar(32) -- US-Style SELECT @DateTimeValue = '10/23/2016' SELECT StringDate=@DateTimeValue, [US-Style] = CONVERT(datetime, @DatetimeValue) SELECT @DateTimeValue = '10/23/2016 23:01:05' SELECT StringDate = @DateTimeValue, [US-Style] = CONVERT(datetime, @DatetimeValue) -- UK-Style, British/French -- convert string to datetime sql -- sql convert string to datetime SELECT @DateTimeValue = '23/10/16 23:01:05' SELECT StringDate = @DateTimeValue, [UK-Style] = CONVERT(datetime, @DatetimeValue, 3) SELECT @DateTimeValue = '23/10/2016 04:01 PM' SELECT StringDate = @DateTimeValue, [UK-Style] = CONVERT(datetime, @DatetimeValue, 103) -- German-Style SELECT @DateTimeValue = '23.10.16 23:01:05' SELECT StringDate = @DateTimeValue, [German-Style] = CONVERT(datetime, @DatetimeValue, 4) SELECT @DateTimeValue = '23.10.2016 04:01 PM' SELECT StringDate = @DateTimeValue, [German-Style] = CONVERT(datetime, @DatetimeValue, 104) ------------ -- Double conversion to US-Style 107 with century: Oct 23, 2016 SET @DateTimeValue='10/23/16' SELECT StringDate=@DateTimeValue, [US-Style] = CONVERT(varchar, CONVERT(datetime, @DateTimeValue),107) -- Using DATEFORMAT - UK-Style -- SQL dateformat SET @DateTimeValue='23/10/16' SET DATEFORMAT dmy SELECT StringDate=@DateTimeValue, [Date Time] = CONVERT(datetime, @DatetimeValue) -- Using DATEFORMAT - US-Style SET DATEFORMAT mdy -- DATEPART datetime function example -- SQL Server datetime functions SELECT * FROM Northwind.dbo.Orders WHERE DATEPART(YEAR, OrderDate) = '1996' AND DATEPART(MONTH,OrderDate) = '07' AND DATEPART(DAY, OrderDate) = '10' -- Alternate syntax for DATEPART example SELECT * FROM Northwind.dbo.Orders WHERE YEAR(OrderDate) = '1996' AND MONTH(OrderDate) = '07' AND DAY(OrderDate) = '10' GO ------------ -- Extract string date from text with PATINDEX pattern matching -- Apply sql server string to date conversion ------------ USE tempdb; go CREATE TABLE InsiderTransaction ( InsiderTransactionID int identity primary key, TradeDate datetime, TradeMsg varchar(256), ModifiedDate datetime default (getdate()) ) go -- Populate table with dummy data INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Hammer, Bruce D. CSO 09-02-08 Buy 2,000 6.10') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Schmidt, Steven CFO 08-25-08 Buy 2,500 6.70') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Hammer, Bruce D. CSO 08-20-08 Buy 3,000 8.59') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Walters, Jeff CTO 08-15-08 Sell 5,648 8.49') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Walters, Jeff CTO 08-15-08 Option Execute 5,648 2.15') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Hammer, Bruce D. CSO 07-31-08 Buy 5,000 8.05') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Lennot, Mark B. Director 08-31-07 Buy 1,500 9.97') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC O''Neal, Linda COO 08-01-08 Sell 5,000 6.50') go -- Extract dates from stock trade message text -- Pattern match for MM-DD-YY using the PATINDEX string function SELECT TradeDate=substring(TradeMsg, patindex('%[01][0-9]-[0123][0-9]-[0-9][0-9]%', TradeMsg),8) FROM InsiderTransaction WHERE patindex('%[01][0-9]-[0123][0-9]-[0-9][0-9]%', TradeMsg) > 0 /* Partial results TradeDate 09-02-08 08-25-08 08-20-08 */ -- Update table with extracted date -- Convert string date to datetime UPDATE InsiderTransaction SET TradeDate = convert(datetime, substring(TradeMsg, patindex('%[01][0-9]-[0123][0-9]-[0-9][0-9]%', TradeMsg),8)) WHERE patindex('%[01][0-9]-[0123][0-9]-[0-9][0-9]%', TradeMsg) > 0 SELECT * FROM InsiderTransaction ORDER BY TradeDate desc /* Partial results InsiderTransactionID TradeDate TradeMsg ModifiedDate 1 2008-09-02 00:00:00.000 INSIDER TRAN QABC Hammer, Bruce D. CSO 09-02-08 Buy 2,000 6.10 2008-12-22 20:25:19.263 2 2008-08-25 00:00:00.000 INSIDER TRAN QABC Schmidt, Steven CFO 08-25-08 Buy 2,500 6.70 2008-12-22 20:25:19.263 3 2008-08-20 00:00:00.000 INSIDER TRAN QABC Hammer, Bruce D. CSO 08-20-08 Buy 3,000 8.59 2008-12-22 20:25:19.263 */ -- Cleanup task DROP TABLE InsiderTransaction go /************ VALID DATE RANGES FOR DATETIME DATA TYPES SMALLDATETIME (4 bytes) date range: January 1, 1900 through June 6, 2079 DATETIME (8 bytes) date range: January 1, 1753 through December 31, 9999 -- The statement below will give a date range error SELECT CONVERT(smalldatetime, '2110-01-01') /* Msg 242, Level 16, State 3, Line 1 The conversion of a varchar data type to a smalldatetime data type resulted in an out-of-range value. */ ************/ ------------ -- SQL CONVERT DATE/DATETIME script applying table variable ------------ -- SQL Server convert date -- Datetime column is converted into date only string column DECLARE @sqlConvertDate TABLE ( DatetimeColumn datetime, DateColumn char(10)); INSERT @sqlConvertDate(DatetimeColumn) SELECT GETDATE() UPDATE @sqlConvertDate SET DateColumn = CONVERT(char(10), DatetimeColumn, 111) SELECT * FROM @sqlConvertDate -- SQL Server convert datetime -- The string date column is converted into datetime column UPDATE @sqlConvertDate SET DatetimeColumn = CONVERT(Datetime, DateColumn, 111) SELECT * FROM @sqlConvertDate -- Equivalent formulation -- SQL Server cast datetime UPDATE @sqlConvertDate SET DatetimeColumn = CAST(DateColumn AS datetime) SELECT * FROM @sqlConvertDate GO /* First results DatetimeColumn DateColumn 2012-12-25 15:54:10.363 2012/12/25 */ /* Second results: DatetimeColumn DateColumn 2012-12-25 00:00:00.000 2012/12/25 */ ------------ -- SQL date sequence generation with DATEADD & table variable -- SQL Server cast datetime to string -- SQL Server insert default values method DECLARE @Sequence table (Sequence int identity(1,1)) DECLARE @i int; SET @i = 0 WHILE ( @i < 500) BEGIN INSERT @Sequence DEFAULT VALUES SET @i = @i + 1 END SELECT DateSequence = CAST(DATEADD(day, Sequence,getdate()) AS varchar) FROM @Sequence GO /* Partial results: DateSequence Dec 31 2008 3:02AM Jan 1 2009 3:02AM Jan 2 2009 3:02AM Jan 3 2009 3:02AM Jan 4 2009 3:02AM Jan 5 2009 3:02AM Jan 6 2009 3:02AM Jan 7 2009 3:02AM */ ------------ ------------ -- SQL Last Week calculations ------------ -- SQL last Friday -- Implied string to datetime conversions in DATEADD & DATEDIFF DECLARE @BaseFriday CHAR(8), @LastFriday datetime, @LastMonday datetime SET @BaseFriday = '19000105' SELECT @LastFriday = DATEADD(dd, (DATEDIFF(dd, @BaseFriday, CURRENT_TIMESTAMP) / 7) * 7, @BaseFriday) SELECT [Last Friday] = @LastFriday -- Result: 2008-12-26 00:00:00.000 -- SQL last Monday (last week's Monday) SELECT @LastMonday=DATEADD(dd, (DATEDIFF(dd, @BaseFriday, CURRENT_TIMESTAMP) / 7) * 7 - 4, @BaseFriday) SELECT [Last Monday]= @LastMonday -- Result: 2008-12-22 00:00:00.000 -- SQL last week - SUN - SAT SELECT [Last Week] = CONVERT(varchar,dateadd(day, -1, @LastMonday), 101)+ ' - ' + CONVERT(varchar,dateadd(day, 1, @LastFriday), 101) -- Result: 12/21/2008 - 12/27/2008 ------------ ------------ -- SQL Last Date calculations ------------ -- Last day of prior month -- Last day of previous month SELECT convert( varchar, dateadd(dd,-1,DATEADD(mm, DATEDIFF(mm,0,getdate() ), 0)),101) -- 01/31/2019 -- Last day of current month SELECT convert( varchar, dateadd(dd,-1,DATEADD(mm, DATEDIFF(mm,0,getdate())+1, 0)),101) -- 02/28/2019 -- Last day of prior quarter -- Last day of previous quarter SELECT convert( varchar, dateadd(dd,-1,DATEADD(qq, DATEDIFF(qq,0,getdate() ), 0)),101) -- 12/31/2018 -- Last day of current quarter -- Last day of current quarter SELECT convert( varchar, dateadd(dd,-1,DATEADD(qq, DATEDIFF(qq,0,getdate())+1, 0)),101) -- 03/31/2019 -- Last day of prior year -- Last day of previous year SELECT convert( varchar, dateadd(dd,-1,DATEADD(yy, DATEDIFF(yy,0,getdate() ), 0)),101) -- 12/31/2018 -- Last day of current year SELECT convert( varchar, dateadd(dd,-1,DATEADD(yy, DATEDIFF(yy,0,getdate())+1, 0)),101) -- 12/31/2019 GO
------------ ------------ -- SQL Server dateformat and language setting ------------ -- T-SQL set language -- String to date conversion SET LANGUAGE us_english SELECT CAST('2018-03-15' AS datetime) -- 2018-03-15 00:00:00.000 SET LANGUAGE british SELECT CAST('2018-03-15' AS datetime) /* Msg 242, Level 16, State 3, Line 2 The conversion of a varchar data type to a datetime data type resulted in an out-of-range value. */ SELECT CAST('2018-15-03' AS datetime) -- 2018-03-15 00:00:00.000 SET LANGUAGE us_english -- SQL dateformat with language dependency SELECT name, alias, dateformat FROM sys.syslanguages WHERE langid in(0,1,2,4,5,6,7,10,11,13,23,31) GO /* name alias dateformat us_english English mdy Deutsch German dmy Français French dmy Dansk Danish dmy Español Spanish dmy Italiano Italian dmy Nederlands Dutch dmy Suomi Finnish dmy Svenska Swedish ymd magyar Hungarian ymd British British English dmy Arabic Arabic dmy */ ------------ Sql Server 中一个非常强大的日期格式化函数 Select CONVERT(varchar(100), GETDATE(), 0): 05 16 2006 10:57AM Select CONVERT(varchar(100), GETDATE(), 1): 05/16/06 Select CONVERT(varchar(100), GETDATE(), 2): 06.05.16 Select CONVERT(varchar(100), GETDATE(), 3): 16/05/06 Select CONVERT(varchar(100), GETDATE(), 4): 16.05.06 Select CONVERT(varchar(100), GETDATE(), 5): 16-05-06 Select CONVERT(varchar(100), GETDATE(), 6): 16 05 06 Select CONVERT(varchar(100), GETDATE(), 7): 05 16, 06 Select CONVERT(varchar(100), GETDATE(), 8): 10:57:46 Select CONVERT(varchar(100), GETDATE(), 9): 05 16 2006 10:57:46:827AM Select CONVERT(varchar(100), GETDATE(), 10): 05-16-06 Select CONVERT(varchar(100), GETDATE(), 11): 06/05/16 Select CONVERT(varchar(100), GETDATE(), 12): 060516 Select CONVERT(varchar(100), GETDATE(), 13): 16 05 2006 10:57:46:937 Select CONVERT(varchar(100), GETDATE(), 14): 10:57:46:967 Select CONVERT(varchar(100), GETDATE(), 20): 2006-05-16 10:57:47 Select CONVERT(varchar(100), GETDATE(), 21): 2006-05-16 10:57:47.157 Select CONVERT(varchar(100), GETDATE(), 22): 05/16/06 10:57:47 AM Select CONVERT(varchar(100), GETDATE(), 23): 2006-05-16 Select CONVERT(varchar(100), GETDATE(), 24): 10:57:47 Select CONVERT(varchar(100), GETDATE(), 25): 2006-05-16 10:57:47.250 Select CONVERT(varchar(100), GETDATE(), 100): 05 16 2006 10:57AM Select CONVERT(varchar(100), GETDATE(), 101): 05/16/2006 Select CONVERT(varchar(100), GETDATE(), 102): 2006.05.16 Select CONVERT(varchar(100), GETDATE(), 103): 16/05/2006 Select CONVERT(varchar(100), GETDATE(), 104): 16.05.2006 Select CONVERT(varchar(100), GETDATE(), 105): 16-05-2006 Select CONVERT(varchar(100), GETDATE(), 106): 16 05 2006 Select CONVERT(varchar(100), GETDATE(), 107): 05 16, 2006 Select CONVERT(varchar(100), GETDATE(), 108): 10:57:49 Select CONVERT(varchar(100), GETDATE(), 109): 05 16 2006 10:57:49:437AM Select CONVERT(varchar(100), GETDATE(), 110): 05-16-2006 Select CONVERT(varchar(100), GETDATE(), 111): 2006/05/16 Select CONVERT(varchar(100), GETDATE(), 112): 20060516 Select CONVERT(varchar(100), GETDATE(), 113): 16 05 2006 10:57:49:513 Select CONVERT(varchar(100), GETDATE(), 114): 10:57:49:547 Select CONVERT(varchar(100), GETDATE(), 120): 2006-05-16 10:57:49 Select CONVERT(varchar(100), GETDATE(), 121): 2006-05-16 10:57:49.700 Select CONVERT(varchar(100), GETDATE(), 126): 2006-05-16T10:57:49.827 Select CONVERT(varchar(100), GETDATE(), 130): 18 ???? ?????? 1427 10:57:49:907AM Select CONVERT(varchar(100), GETDATE(), 131): 18/04/1427 10:57:49:920AM 常用： Select CONVERT(varchar(100), GETDATE(), 8): 10:57:46 Select CONVERT(varchar(100), GETDATE(), 24): 10:57:47 Select CONVERT(varchar(100), GETDATE(), 108): 10:57:49 Select CONVERT(varchar(100), GETDATE(), 12): 060516 Select CONVERT(varchar(100), GETDATE(), 23): 2006-05-16
Execute the following T-SQL scripts in Microsoft SQL Server Manangement Studio Query Editor to demonstrate T-SQL convert and cast functions in transforming string date, string time & string datetime data to datetime data type. Other datetime manipulation examples are presented as well. -- Microsoft SQL Server string to date conversion - datetime string format sql server -- MSSQL string to datetime conversion - convert char to date sql server -- Subtract 100 from style number (format) for yy instead yyyy (or ccyy with century) SELECT convert(datetime, 'Oct 23 2012 11:01AM', 100) -- mon dd yyyy hh:mmAM (or PM) SELECT convert(datetime, 'Oct 23 2012 11:01AM') -- 2012-10-23 11:01:00.000 -- Without century (yy) string date conversion - convert string to datetime SELECT convert(datetime, 'Oct 23 12 11:01AM', 0) -- mon dd yy hh:mmAM (or PM) SELECT convert(datetime, 'Oct 23 12 11:01AM') -- 2012-10-23 11:01:00.000 -- Convert string to datetime sql - convert string to date sql - sql dates format -- T-SQL convert string to datetime - SQL Server convert string to date SELECT convert(datetime, '10/23/2016', 101) -- mm/dd/yyyy SELECT convert(datetime, '2016.10.23', 102) -- yyyy.mm.dd SELECT convert(datetime, '23/10/2016', 103) -- dd/mm/yyyy SELECT convert(datetime, '23.10.2016', 104) -- dd.mm.yyyy SELECT convert(datetime, '23-10-2016', 105) -- dd-mm-yyyy -- mon types are nondeterministic conversions, dependent on language setting SELECT convert(datetime, '23 OCT 2016', 106) -- dd mon yyyy SELECT convert(datetime, 'Oct 23, 2016', 107) -- mon dd, yyyy -- 2016-10-23 00:00:00.000 SELECT convert(datetime, '20:10:44', 108) -- hh:mm:ss -- 1900-01-01 20:10:44.000 -- mon dd yyyy hh:mm:ss:mmmAM (or PM) - sql time format SELECT convert(datetime, 'Oct 23 2016 11:02:44:013AM', 109) -- 2016-10-23 11:02:44.013 SELECT convert(datetime, '10-23-2016', 110) -- mm-dd-yyyy SELECT convert(datetime, '2016/10/23', 111) -- yyyy/mm/dd SELECT convert(datetime, '20161023', 112) -- yyyymmdd -- 2016-10-23 00:00:00.000 SELECT convert(datetime, '23 Oct 2016 11:02:07:577', 113) -- dd mon yyyy hh:mm:ss:mmm -- 2016-10-23 11:02:07.577 SELECT convert(datetime, '20:10:25:300', 114) -- hh:mm:ss:mmm(24h) -- 1900-01-01 20:10:25.300 SELECT convert(datetime, '2016-10-23 20:44:11', 120) -- yyyy-mm-dd hh:mm:ss(24h) -- 2016-10-23 20:44:11.000 SELECT convert(datetime, '2016-10-23 20:44:11.500', 121) -- yyyy-mm-dd hh:mm:ss.mmm -- 2016-10-23 20:44:11.500 SELECT convert(datetime, '2008-10-23T18:52:47.513', 126) -- yyyy-mm-ddThh:mm:ss.mmm -- 2008-10-23 18:52:47.513 -- Convert DDMMYYYY format to datetime SELECT convert(datetime, STUFF(STUFF('31012016',3,0,'-'),6,0,'-'), 105) -- 2016-01-31 00:00:00.000
-- SQL string to datetime conversion without century - some exceptions SELECT convert(datetime, '10/23/16', 1) -- mm/dd/yy SELECT convert(datetime, '16.10.23', 2) -- yy.mm.dd SELECT convert(datetime, '23/10/16', 3) -- dd/mm/yy SELECT convert(datetime, '23.10.16', 4) -- dd.mm.yy SELECT convert(datetime, '23-10-16', 5) -- dd-mm-yy SELECT convert(datetime, '23 OCT 16', 6) -- dd mon yy SELECT convert(datetime, 'Oct 23, 16', 7) -- mon dd, yy SELECT convert(datetime, '20:10:44', 8) -- hh:mm:ss SELECT convert(datetime, 'Oct 23 16 11:02:44:013AM', 9) SELECT convert(datetime, '10-23-16', 10) -- mm-dd-yy SELECT convert(datetime, '16/10/23', 11) -- yy/mm/dd SELECT convert(datetime, '161023', 12) -- yymmdd SELECT convert(datetime, '23 Oct 16 11:02:07:577', 13) -- dd mon yy hh:mm:ss:mmm SELECT convert(datetime, '20:10:25:300', 14) -- hh:mm:ss:mmm(24h) SELECT convert(datetime, '2016-10-23 20:44:11',20) -- yyyy-mm-dd hh:mm:ss(24h) SELECT convert(datetime, '2016-10-23 20:44:11.500', 21) -- yyyy-mm-dd hh:mm:ss.mmm ------------ -- SQL Datetime Data Type: Combine date & time string into datetime - sql hh mm ss -- String to datetime - mssql datetime - sql convert date - sql concatenate string DECLARE @DateTimeValue varchar(32), @DateValue char(8), @TimeValue char(6) SELECT @DateValue = '20120718', @TimeValue = '211920' SELECT @DateTimeValue = convert(varchar, convert(datetime, @DateValue), 111) + ' ' + substring(@TimeValue, 1, 2) + ':' + substring(@TimeValue, 3, 2) + ':' + substring(@TimeValue, 5, 2) SELECT DateInput = @DateValue, TimeInput = @TimeValue, DateTimeOutput = @DateTimeValue; /* DateInput TimeInput DateTimeOutput 20120718 211920 2012/07/18 21:19:20 */ -- SQL convert seconds to HH:MM:SS - sql times format - sql hh mm DECLARE @Seconds INT SET @Seconds = 20000 SELECT HH = @Seconds / 3600, MM = (@Seconds%3600) / 60, SS = (@Seconds%60) GO /* HH MM SS 5 33 20 */
------------ -- SQL Server 2008 convert datetime to date - sql yyyy mm dd SELECT TOP (3) OrderDate = CONVERT(date, OrderDate), Today = CONVERT(date, getdate()) FROM AdventureWorks2008.Sales.SalesOrderHeader ORDER BY newid(); /* OrderDate Today 2003-07-09 2012-06-18 2003-09-26 2012-06-18 2004-02-15 2012-06-18 */ ------------ -- SQL date yyyy mm dd - sqlserver yyyy mm dd - date format yyyymmdd SELECT CONVERT(VARCHAR(10), GETDATE(), 111) AS [YYYY/MM/DD] /* YYYY/MM/DD 2015/07/11 */ SELECT CONVERT(VARCHAR(10), GETDATE(), 112) AS [YYYYMMDD] /* YYYYMMDD 20150711 */ SELECT REPLACE(CONVERT(VARCHAR(10), GETDATE(), 111),'/',' ') AS [YYYY MM DD] /* YYYY MM DD 2015 07 11 */ ------------ -- SQL convert date string to datetime - time set to 00:00:00.000 or 12:00AM PRINT CONVERT(datetime,'07-10-2012',110) -- Jul 10 2012 12:00AM PRINT CONVERT(datetime,'2012/07/10',111) -- Jul 10 2012 12:00AM PRINT CONVERT(datetime,'20120710', 112) -- Jul 10 2012 12:00AM ------------ -- String to date conversion - sql date yyyy mm dd - sql date formatting -- SQL Server cast string to date - sql convert date to datetime SELECT [Date] = CAST (@DateValue AS datetime) GO -- 2012-07-18 00:00:00.000 -- SQL convert string date to different style - sql date string formatting SELECT CONVERT(varchar, CONVERT(datetime, '20140508'), 100) -- May 8 2014 12:00AM -- SQL Server convert date to integer DECLARE @Date datetime SET @Date = getdate() SELECT DateAsInteger = CAST (CONVERT(varchar,@Date,112) as INT) -- Result: 20161225 -- SQL Server convert integer to datetime DECLARE @iDate int SET @iDate = 20151225 SELECT IntegerToDatetime = CAST(convert(varchar,@iDate) as datetime) GO
-- 2015-12-25 00:00:00.000 -- Alternates: date-only datetime values -- SQL Server floor date - sql convert datetime SELECT [DATE-ONLY]=CONVERT(DATETIME, FLOOR(CONVERT(FLOAT, GETDATE()))) SELECT [DATE-ONLY]=CONVERT(DATETIME, FLOOR(CONVERT(MONEY, GETDATE()))) -- SQL Server cast string to datetime -- SQL Server datetime to string convert SELECT [DATE-ONLY]=CAST(CONVERT(varchar, GETDATE(), 101) AS DATETIME) -- SQL Server dateadd function - T-SQL datediff function -- SQL strip time from date - MSSQL strip time from datetime SELECT getdate() ,DATEADD(dd, DATEDIFF(dd, 0, getdate()), 0) -- Results: 2016-01-23 05:35:52.793 2016-01-23 00:00:00.000 -- String date - 10 bytes of storage SELECT [STRING DATE]=CONVERT(varchar, GETDATE(), 110) SELECT [STRING DATE]=CONVERT(varchar, CURRENT_TIMESTAMP, 110) -- Same results: 01-02-2012 -- SQL Server cast datetime as string - sql datetime formatting SELECT stringDateTime=CAST (getdate() as varchar) --Result: Dec 29 2012 3:47AM ---------- -- SQL date range between ---------- -- SQL date range select - date range search -- T-SQL date range query - sql date ranges -- Count Sales Orders for 2003 OCT-NOV DECLARE @StartDate DATETIME, @EndDate DATETIME SET @StartDate = convert(DATETIME,'10/01/2003',101) SET @EndDate = convert(DATETIME,'11/30/2003',101) SELECT @StartDate, @EndDate -- 2003-10-01 00:00:00.000 2003-11-30 00:00:00.000 SELECT DATEADD(DAY,1,@EndDate), DATEADD(ms,-3,DATEADD(DAY,1,@EndDate)) -- 2003-12-01 00:00:00.000 2003-11-30 23:59:59.997 -- MSSQL date range select using >= and < SELECT [Sales Orders for 2003 OCT-NOV] = COUNT(* ) FROM Sales.SalesOrderHeader WHERE OrderDate >= @StartDate AND OrderDate < DATEADD(DAY,1,@EndDate) /* Sales Orders for 2003 OCT-NOV 3668 */ -- Equivalent date range query using BETWEEN comparison -- It requires a bit of trick programming SELECT [Sales Orders for 2003 OCT-NOV] = COUNT(* ) FROM Sales.SalesOrderHeader WHERE OrderDate BETWEEN @StartDate AND DATEADD(ms,-3,DATEADD(DAY,1,@EndDate)) -- 3668 GO USE AdventureWorks; -- SQL between string dates SELECT POs=COUNT(*) FROM Purchasing.PurchaseOrderHeader WHERE OrderDate BETWEEN '20040201' AND '20040210' -- Result: 108 -- BETWEEN is equivalent to >=...AND....<= SELECT POs=COUNT(*) FROM Purchasing.PurchaseOrderHeader WHERE OrderDate BETWEEN '2004-02-01 00:00:00.000' AND '2004-02-10 00:00:00.000' /* Orders with OrderDates '2004-02-10 00:00:01.000' - 1 second after midnight (12:00AM) '2004-02-10 00:01:00.000' - 1 minute after midnight '2004-02-10 01:00:00.000' - 1 hour after midnight are not included in the two queries above. */ -- To include the entire day of 2004-02-10 use: SELECT POs=COUNT(*) FROM Purchasing.PurchaseOrderHeader WHERE OrderDate >= '20040201' AND OrderDate < '20040211' ---------- -- Date validation function ISDATE - returns 1 or 0 -- SQL datetime functions ------------ DECLARE @StringDate varchar(32) SET @StringDate = '2011-03-15 18:50' IF EXISTS( SELECT * WHERE ISDATE(@StringDate) = 1) PRINT 'VALID DATE: ' + @StringDate ELSE PRINT 'INVALID DATE: ' + @StringDate GO -- Result: VALID DATE: 2011-03-15 18:50 DECLARE @StringDate varchar(32) SET @StringDate = '20112-03-15 18:50' IF EXISTS( SELECT * WHERE ISDATE(@StringDate) = 1) PRINT 'VALID DATE: ' + @StringDate ELSE PRINT 'INVALID DATE: ' + @StringDate GO -- Result: INVALID DATE: 20112-03-15 18:50 -- Selected named date styles
------------ DECLARE @DateTimeValue varchar(32) -- US-Style SELECT @DateTimeValue = '10/23/2016' SELECT StringDate=@DateTimeValue, [US-Style] = CONVERT(datetime, @DatetimeValue) SELECT @DateTimeValue = '10/23/2016 23:01:05' SELECT StringDate = @DateTimeValue, [US-Style] = CONVERT(datetime, @DatetimeValue) -- UK-Style, British/French -- convert string to datetime sql -- sql convert string to datetime SELECT @DateTimeValue = '23/10/16 23:01:05' SELECT StringDate = @DateTimeValue, [UK-Style] = CONVERT(datetime, @DatetimeValue, 3) SELECT @DateTimeValue = '23/10/2016 04:01 PM' SELECT StringDate = @DateTimeValue, [UK-Style] = CONVERT(datetime, @DatetimeValue, 103) -- German-Style SELECT @DateTimeValue = '23.10.16 23:01:05' SELECT StringDate = @DateTimeValue, [German-Style] = CONVERT(datetime, @DatetimeValue, 4) SELECT @DateTimeValue = '23.10.2016 04:01 PM' SELECT StringDate = @DateTimeValue, [German-Style] = CONVERT(datetime, @DatetimeValue, 104) ------------ -- Double conversion to US-Style 107 with century: Oct 23, 2016 SET @DateTimeValue='10/23/16' SELECT StringDate=@DateTimeValue, [US-Style] = CONVERT(varchar, CONVERT(datetime, @DateTimeValue),107) -- Using DATEFORMAT - UK-Style -- SQL dateformat SET @DateTimeValue='23/10/16' SET DATEFORMAT dmy SELECT StringDate=@DateTimeValue, [Date Time] = CONVERT(datetime, @DatetimeValue) -- Using DATEFORMAT - US-Style SET DATEFORMAT mdy -- DATEPART datetime function example -- SQL Server datetime functions SELECT * FROM Northwind.dbo.Orders WHERE DATEPART(YEAR, OrderDate) = '1996' AND DATEPART(MONTH,OrderDate) = '07' AND DATEPART(DAY, OrderDate) = '10' -- Alternate syntax for DATEPART example SELECT * FROM Northwind.dbo.Orders WHERE YEAR(OrderDate) = '1996' AND MONTH(OrderDate) = '07' AND DAY(OrderDate) = '10' GO ------------ -- Extract string date from text with PATINDEX pattern matching -- Apply sql server string to date conversion ------------ USE tempdb; go CREATE TABLE InsiderTransaction ( InsiderTransactionID int identity primary key, TradeDate datetime, TradeMsg varchar(256), ModifiedDate datetime default (getdate()) ) go -- Populate table with dummy data INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Hammer, Bruce D. CSO 09-02-08 Buy 2,000 6.10') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Schmidt, Steven CFO 08-25-08 Buy 2,500 6.70') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Hammer, Bruce D. CSO 08-20-08 Buy 3,000 8.59') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Walters, Jeff CTO 08-15-08 Sell 5,648 8.49') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Walters, Jeff CTO 08-15-08 Option Execute 5,648 2.15') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Hammer, Bruce D. CSO 07-31-08 Buy 5,000 8.05') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC Lennot, Mark B. Director 08-31-07 Buy 1,500 9.97') INSERT InsiderTransaction (TradeMsg) VALUES( 'INSIDER TRAN QABC O''Neal, Linda COO 08-01-08 Sell 5,000 6.50') go -- Extract dates from stock trade message text -- Pattern match for MM-DD-YY using the PATINDEX string function SELECT TradeDate=substring(TradeMsg, patindex('%[01][0-9]-[0123][0-9]-[0-9][0-9]%', TradeMsg),8) FROM InsiderTransaction WHERE patindex('%[01][0-9]-[0123][0-9]-[0-9][0-9]%', TradeMsg) > 0 /* Partial results TradeDate 09-02-08 08-25-08 08-20-08 */ -- Update table with extracted date -- Convert string date to datetime UPDATE InsiderTransaction SET TradeDate = convert(datetime, substring(TradeMsg, patindex('%[01][0-9]-[0123][0-9]-[0-9][0-9]%', TradeMsg),8)) WHERE patindex('%[01][0-9]-[0123][0-9]-[0-9][0-9]%', TradeMsg) > 0 SELECT * FROM InsiderTransaction ORDER BY TradeDate desc /* Partial results InsiderTransactionID TradeDate TradeMsg ModifiedDate 1 2008-09-02 00:00:00.000 INSIDER TRAN QABC Hammer, Bruce D. CSO 09-02-08 Buy 2,000 6.10 2008-12-22 20:25:19.263 2 2008-08-25 00:00:00.000 INSIDER TRAN QABC Schmidt, Steven CFO 08-25-08 Buy 2,500 6.70 2008-12-22 20:25:19.263 3 2008-08-20 00:00:00.000 INSIDER TRAN QABC Hammer, Bruce D. CSO 08-20-08 Buy 3,000 8.59 2008-12-22 20:25:19.263 */ -- Cleanup task DROP TABLE InsiderTransaction go /************ VALID DATE RANGES FOR DATETIME DATA TYPES SMALLDATETIME (4 bytes) date range: January 1, 1900 through June 6, 2079 DATETIME (8 bytes) date range: January 1, 1753 through December 31, 9999 -- The statement below will give a date range error SELECT CONVERT(smalldatetime, '2110-01-01') /* Msg 242, Level 16, State 3, Line 1 The conversion of a varchar data type to a smalldatetime data type resulted in an out-of-range value. */ ************/ ------------ -- SQL CONVERT DATE/DATETIME script applying table variable ------------ -- SQL Server convert date -- Datetime column is converted into date only string column DECLARE @sqlConvertDate TABLE ( DatetimeColumn datetime, DateColumn char(10)); INSERT @sqlConvertDate(DatetimeColumn) SELECT GETDATE() UPDATE @sqlConvertDate SET DateColumn = CONVERT(char(10), DatetimeColumn, 111) SELECT * FROM @sqlConvertDate -- SQL Server convert datetime -- The string date column is converted into datetime column UPDATE @sqlConvertDate SET DatetimeColumn = CONVERT(Datetime, DateColumn, 111) SELECT * FROM @sqlConvertDate -- Equivalent formulation -- SQL Server cast datetime UPDATE @sqlConvertDate SET DatetimeColumn = CAST(DateColumn AS datetime) SELECT * FROM @sqlConvertDate GO /* First results DatetimeColumn DateColumn 2012-12-25 15:54:10.363 2012/12/25 */ /* Second results: DatetimeColumn DateColumn 2012-12-25 00:00:00.000 2012/12/25 */ ------------ -- SQL date sequence generation with DATEADD & table variable -- SQL Server cast datetime to string -- SQL Server insert default values method DECLARE @Sequence table (Sequence int identity(1,1)) DECLARE @i int; SET @i = 0 WHILE ( @i < 500) BEGIN INSERT @Sequence DEFAULT VALUES SET @i = @i + 1 END SELECT DateSequence = CAST(DATEADD(day, Sequence,getdate()) AS varchar) FROM @Sequence GO /* Partial results: DateSequence Dec 31 2008 3:02AM Jan 1 2009 3:02AM Jan 2 2009 3:02AM Jan 3 2009 3:02AM Jan 4 2009 3:02AM Jan 5 2009 3:02AM Jan 6 2009 3:02AM Jan 7 2009 3:02AM */ ------------ ------------ -- SQL Last Week calculations ------------ -- SQL last Friday -- Implied string to datetime conversions in DATEADD & DATEDIFF DECLARE @BaseFriday CHAR(8), @LastFriday datetime, @LastMonday datetime SET @BaseFriday = '19000105' SELECT @LastFriday = DATEADD(dd, (DATEDIFF(dd, @BaseFriday, CURRENT_TIMESTAMP) / 7) * 7, @BaseFriday) SELECT [Last Friday] = @LastFriday -- Result: 2008-12-26 00:00:00.000 -- SQL last Monday (last week's Monday) SELECT @LastMonday=DATEADD(dd, (DATEDIFF(dd, @BaseFriday, CURRENT_TIMESTAMP) / 7) * 7 - 4, @BaseFriday) SELECT [Last Monday]= @LastMonday -- Result: 2008-12-22 00:00:00.000 -- SQL last week - SUN - SAT SELECT [Last Week] = CONVERT(varchar,dateadd(day, -1, @LastMonday), 101)+ ' - ' + CONVERT(varchar,dateadd(day, 1, @LastFriday), 101) -- Result: 12/21/2008 - 12/27/2008 ------------ ------------ -- SQL Last Date calculations ------------ -- Last day of prior month -- Last day of previous month SELECT convert( varchar, dateadd(dd,-1,DATEADD(mm, DATEDIFF(mm,0,getdate() ), 0)),101) -- 01/31/2019 -- Last day of current month SELECT convert( varchar, dateadd(dd,-1,DATEADD(mm, DATEDIFF(mm,0,getdate())+1, 0)),101) -- 02/28/2019 -- Last day of prior quarter -- Last day of previous quarter SELECT convert( varchar, dateadd(dd,-1,DATEADD(qq, DATEDIFF(qq,0,getdate() ), 0)),101) -- 12/31/2018 -- Last day of current quarter -- Last day of current quarter SELECT convert( varchar, dateadd(dd,-1,DATEADD(qq, DATEDIFF(qq,0,getdate())+1, 0)),101) -- 03/31/2019 -- Last day of prior year -- Last day of previous year SELECT convert( varchar, dateadd(dd,-1,DATEADD(yy, DATEDIFF(yy,0,getdate() ), 0)),101) -- 12/31/2018 -- Last day of current year SELECT convert( varchar, dateadd(dd,-1,DATEADD(yy, DATEDIFF(yy,0,getdate())+1, 0)),101) -- 12/31/2019 GO
------------ ------------ -- SQL Server dateformat and language setting ------------ -- T-SQL set language -- String to date conversion SET LANGUAGE us_english SELECT CAST('2018-03-15' AS datetime) -- 2018-03-15 00:00:00.000 SET LANGUAGE british SELECT CAST('2018-03-15' AS datetime) /* Msg 242, Level 16, State 3, Line 2 The conversion of a varchar data type to a datetime data type resulted in an out-of-range value. */ SELECT CAST('2018-15-03' AS datetime) -- 2018-03-15 00:00:00.000 SET LANGUAGE us_english -- SQL dateformat with language dependency SELECT name, alias, dateformat FROM sys.syslanguages WHERE langid in(0,1,2,4,5,6,7,10,11,13,23,31) GO /* name alias dateformat us_english English mdy Deutsch German dmy Français French dmy Dansk Danish dmy Español Spanish dmy Italiano Italian dmy Nederlands Dutch dmy Suomi Finnish dmy Svenska Swedish ymd magyar Hungarian ymd British British English dmy Arabic Arabic dmy */ ------------ Sql Server 中一个非常强大的日期格式化函数 Select CONVERT(varchar(100), GETDATE(), 0): 05 16 2006 10:57AM Select CONVERT(varchar(100), GETDATE(), 1): 05/16/06 Select CONVERT(varchar(100), GETDATE(), 2): 06.05.16 Select CONVERT(varchar(100), GETDATE(), 3): 16/05/06 Select CONVERT(varchar(100), GETDATE(), 4): 16.05.06 Select CONVERT(varchar(100), GETDATE(), 5): 16-05-06 Select CONVERT(varchar(100), GETDATE(), 6): 16 05 06 Select CONVERT(varchar(100), GETDATE(), 7): 05 16, 06 Select CONVERT(varchar(100), GETDATE(), 8): 10:57:46 Select CONVERT(varchar(100), GETDATE(), 9): 05 16 2006 10:57:46:827AM Select CONVERT(varchar(100), GETDATE(), 10): 05-16-06 Select CONVERT(varchar(100), GETDATE(), 11): 06/05/16 Select CONVERT(varchar(100), GETDATE(), 12): 060516 Select CONVERT(varchar(100), GETDATE(), 13): 16 05 2006 10:57:46:937 Select CONVERT(varchar(100), GETDATE(), 14): 10:57:46:967 Select CONVERT(varchar(100), GETDATE(), 20): 2006-05-16 10:57:47 Select CONVERT(varchar(100), GETDATE(), 21): 2006-05-16 10:57:47.157 Select CONVERT(varchar(100), GETDATE(), 22): 05/16/06 10:57:47 AM Select CONVERT(varchar(100), GETDATE(), 23): 2006-05-16 Select CONVERT(varchar(100), GETDATE(), 24): 10:57:47 Select CONVERT(varchar(100), GETDATE(), 25): 2006-05-16 10:57:47.250 Select CONVERT(varchar(100), GETDATE(), 100): 05 16 2006 10:57AM Select CONVERT(varchar(100), GETDATE(), 101): 05/16/2006 Select CONVERT(varchar(100), GETDATE(), 102): 2006.05.16 Select CONVERT(varchar(100), GETDATE(), 103): 16/05/2006 Select CONVERT(varchar(100), GETDATE(), 104): 16.05.2006 Select CONVERT(varchar(100), GETDATE(), 105): 16-05-2006 Select CONVERT(varchar(100), GETDATE(), 106): 16 05 2006 Select CONVERT(varchar(100), GETDATE(), 107): 05 16, 2006 Select CONVERT(varchar(100), GETDATE(), 108): 10:57:49 Select CONVERT(varchar(100), GETDATE(), 109): 05 16 2006 10:57:49:437AM Select CONVERT(varchar(100), GETDATE(), 110): 05-16-2006 Select CONVERT(varchar(100), GETDATE(), 111): 2006/05/16 Select CONVERT(varchar(100), GETDATE(), 112): 20060516 Select CONVERT(varchar(100), GETDATE(), 113): 16 05 2006 10:57:49:513 Select CONVERT(varchar(100), GETDATE(), 114): 10:57:49:547 Select CONVERT(varchar(100), GETDATE(), 120): 2006-05-16 10:57:49 Select CONVERT(varchar(100), GETDATE(), 121): 2006-05-16 10:57:49.700 Select CONVERT(varchar(100), GETDATE(), 126): 2006-05-16T10:57:49.827 Select CONVERT(varchar(100), GETDATE(), 130): 18 ???? ?????? 1427 10:57:49:907AM Select CONVERT(varchar(100), GETDATE(), 131): 18/04/1427 10:57:49:920AM 常用： Select CONVERT(varchar(100), GETDATE(), 8): 10:57:46 Select CONVERT(varchar(100), GETDATE(), 24): 10:57:47 Select CONVERT(varchar(100), GETDATE(), 108): 10:57:49 Select CONVERT(varchar(100), GETDATE(), 12): 060516 Select CONVERT(varchar(100), GETDATE(), 23): 2006-05-16
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