SQL SQL Server 2012 新增加的几个函数:
SELECT CONVERT (INT, 'Angkor-216.00') 直接报错
SELECT TRY_CONVERT(INT, 'SSD-216.00') 输出:NULL
SELECT TRY_CONVERT(INT, '216') 输出:416
SELECT TRY_CONVERT(DATETIME, '216') 输出:NULL
DECLARE @birthdate datetime = '2013-11-05'
Select FORMAT (@birthdate ,N'd') [Date],
FORMAT (@birthdate ,N'dd') [Date],
FORMAT (@birthdate ,N'ddd') [Date],
FORMAT (@birthdate ,N'dddd') [Date],
FORMAT (@birthdate ,N'dddd') [Date]
输出:
Date Date Date Date Date
11/5/2013 05 Tue Tuesday Tuesday
指定日期月份中的最后一天: 注意2月
SELECT EOMONTH ('02/02/2016') 'EOM Processing Date'
EOM Processing Date
2016-02-29
SELECT EOMONTH ( Getdate(), -1 ) AS 'Last Month'
Last Month
2013-10-31
SELECT CHOOSE ( 5, 'CTO', 'GM', 'DGM', 'AGM', 'Manager')
Output:Manager
SELECT CONCAT( 'Angkor','Joining Date at ', GETDATE());
Output:AngkorJoining Date at Nov 29 2013 2:23PM