SQL

is numeric in sql

SELECT ISNUMERIC('Hello world!');
-- Tests if expression is numeric

numeric in sql

numeric(p,d): A fixed-point number with user-specified precision. The number
consists of p digits (plus a sign), and d of the p digits are to the right of the decimal
point. Thus, numeric(3,1) allows 44.5 to be stored exactly, but neither 444.5 nor
0.32 can be stored exactly in a field of this type.