Question

我有一个名为StateNames From Customer Table的SQL数据库列

StateCode COLUMN具有数据类似

27 MAHARASHTRA    
23 BIHAR    
234 SHILONG

等。

我必须只选择字符串Part .. I.e MAHARASHTRA或BIHAR ..

请建议

Answer 1

CREATE FUNCTION [dbo].[Split] (@sep char(1), @s varchar(5120))
RETURNS table
AS
RETURN (
    WITH Pieces(pn, start, stop) AS (
  SELECT 1, 1, CHARINDEX(@sep, @s)
  UNION ALL
  SELECT pn + 1, stop + 1, CHARINDEX(@sep, @s, stop + 1)
  FROM Pieces
  WHERE stop > 0
)
SELECT pn AS [Index],
  SUBSTRING(@s, start, CASE WHEN stop > 0 THEN stop-start ELSE 5120 END) AS [Value]
FROM Pieces
)

然后

SELECT [Value] FROM dbo.Split(' ', YourColumnName) WHERE [Index] = 2

Answer 2

如果分隔符是特定字符，如空格，则使用CHARINDEX。

DECLARE @StateCode VARCHAR(100) = '234 SHILONG'

SELECT
    Original = @StateCode,
    PositionOfSpace = CHARINDEX(' ', @StateCode),
    State = CASE 
        WHEN CHARINDEX(' ', @StateCode) > 0
            THEN SUBSTRING(
                @StateCode, 
                CHARINDEX(' ', @StateCode) + 1,
                100)
        ELSE
            @StateCode END

MS Sql Query仅选择Char部分

2 个答案: