1¹ø
EXEC SQL CONNECT ¡®scott¡¯ IDENTIFIED BY ¡®tiger¡¯;

2¹ø
LARE/OPEN/FECTH/CLOSE

3¹ø 
 ¨ç SQLCA, WHENEVER
 ¨è sqlca.sqlerrd[2]
 ¨é EXEC SQL WHENEVER NOT FOUND DO break;