$result   The result resource returned by the sasql_query function.

row_num   An integer that represents the new position of the cursor within the result resource. For example, specify 0 to move the cursor to the first row of the result set or 5 to move it to the sixth row. Negative numbers represent rows relative to the end of the result set. For example, -1 moves the cursor to the last row in the result set and -2 moves it to the second-last row.