Find Non-numeric Rows in Column

CREATE TABLE #foo (

ident BIGINT IDENTITY (0, 1)

, someString VARCHAR (128) DEFAULT '')

INSERT #foo ( someString )

SELECT '4546546'

UNION

SELECT '456654.475'

UNION

SELECT 'afafsdf'

UNION

SELECT '78998'

UNION

SELECT '87979z'

SELECT ident

, someString

, PATINDEX ('%[^0-9]%', someString)

FROM #foo

WHERE PATINDEX ('%[^0-9]%', someString) != 0