Checking SQL statement Status in Powerbuilder

Assume that your SQL in Powerbuilder script as below :-

//DECLARE sqlca is your transaction...
transaction SQLCA

SELECT * FROM MYTABLE A WHERE A.MYCOL = '01234' using SQLCA;

if SQLCA.sqlcode = 100 then
    messagabox('Error', 'Record Not Found',StopSign!)
    return
end if

/*
SQLCA.sqlcode = 100 //result not found
SQLCA.sqlcode = 0 //result found or SQL return no error
SQLCA.sqlcode = -1 //returns error in SELECT or INSERT or UPDATE
*/