A prefix operator is an operator that is applied to the variable, constant, function, or parenthetic expression that immediately follows it. The plus sign (+) and minus sign (-) can be used as prefix ...

operator a symbol ... expression returns all values for EMPNUM and SSN that are not missing or that have a value of 0: data testmacs; set customer; where substr (name,1,3) = 'Mac' and ...

If you are a coder or have the know-how of computer programming, then you would know that to add a ‘not equal to’ sign, we use “!=”. Although this does the job for you as your system can ...