例:
實現原理:判斷 是否包含特殊字符，是否全部為0-9的自然數組成
    CREATE FUNCTION dbo.check_number
(
/*驗證一字符串類型是否為整型數值類型*/
@checkTmp VARCHAR(100)
)
RETURNS BIT
BEGIN
DECLARE @tmp BIT
IF LEFT(@checkTmp, 1) = ‘-‘
SET @checkTmp = SUBSTRING(@checkTmp, 2, LEN(@checkTmp))
IF (PATINDEX(‘%[^0-9-]%‘, @checkTmp) = 0
AND CHARINDEX(‘-‘, @checkTmp) <= 1
AND @checkTmp NOT IN (‘.‘, ‘-‘, ‘+‘, ‘^‘)
AND LEN(@checkTmp)>0
AND @checkTmp NOT LIKE ‘%-%‘)
SET @tmp = 1
ELSE
SET @tmp = 0
RETURN @tmp
END
GO

/*數據驗證*/
SELECT ‘878‘ [測試數值],dbo.check_number(‘999‘) [測試返回值];
SELECT ‘testData‘ [測試數值],dbo.check_number(‘abc‘) [測試返回值];
SELECT ‘8-8‘ [測試數值],dbo.check_number(‘9+9‘) [測試返回值];
SELECT ‘8.9‘ [測試數值],dbo.check_number(‘$9.9‘) [測試返回值];
SELECT ‘maomao365.com‘ [測試數值],dbo.check_number(‘maomao365.com‘) [測試返回值];
go
drop function check_number
 

mssql sqlserver 驗證整型函數分享