在SQL Server 2008中的符号之前隔离字符串中的子字符串

Question

我试图从字符串中提取子字符串(在这种情况下,在连字符之前的所有内容),如下所示:

Net Operating Loss - 2007
Capital Loss - 1991
Foreign Tax Credit - 1997

并使用SQL Server Management studio 2008分别想要年份和名称(连字符前的子串).有什么建议吗？或者想法我怎么能做到这一点？

Answer 1

DECLARE @test nvarchar(100)

SET @test = 'Foreign Tax Credit - 1997'

SELECT @test, left(@test, charindex('-', @test) - 2) AS LeftString,
    right(@test, len(@test) - charindex('-', @test) - 1)  AS RightString

Answer 2

DECLARE @dd VARCHAR(200) = 'Net Operating Loss - 2007';

SELECT SUBSTRING(@dd, 1, CHARINDEX('-', @dd) -1) F1,
       SUBSTRING(@dd, CHARINDEX('-', @dd) +1, LEN(@dd)) F2