ISNUMERIC('07213E71') = True?

Question

SQL is detecting that the following string ISNUMERIC:

\'07213E71\'

I believe this is because the \'E\' is being classed as a mathmatical symbol.

Answer 1

07213E71 is a floating number 7213 with 71 zeros

You can use this ISNUMERIC(myValue + '.0e0') to test for whole integers. Slightly cryptic but works.

Another test is the double negative myValue NOT LIKE '%[^0-9]%' which allows only digits 0 to 9.

ISNUMERIC has other issues in that these all return 1: +, -,