ISNumeric is buggy in SQL Server?

When I do ISNUMERIC('0E1') = 1, it returns true. Can anyone explain how SQL server qualifies 'E' as numeric?

Is this the right way to check 开发者_如何学运维numbers in SQL? Sorry I am new to T-SQL.

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0E1 is numeric. http://en.wikipedia.org/wiki/Exponential_notation#E_notation

To allow only integers containing only numbers, see Best equivalent for IsInteger in SQL Server