The resulting row hash value is typed BYTE(4).
| IF the argument list is … | THEN HASHROW … |
|---|---|
| empty | returns the maximum hash code value. |
| an expression that evaluates to NULL | returns '00000000'XB. |
| a list of expressions where all the expressions evaluate to NULL | |
| an expression that evaluates to 0, '', ' ', or a similar value | |
| a valid, non-NULL expression that can appear in the select list of a SELECT statement | evaluates expression or the list of expressions and applies the hash function on the result. HASHROW returns the resulting row hash value. |
| a list of expressions that can appear in the select list of a SELECT statement, where some expressions can evaluate to NULL |