(单选题)19: Given the application code:
EXEC SQL DECLARE cur CURSOR WITH HOLD FOR SELECT c1 FROM t1
EXEC SQL OPEN cur
EXEC SQL FETCH cur INTO :hv /* Statement 1 */
EXEC SQL COMMIT /* Statement 2 */
EXEC SQL FETCH cur INTO :hv /* Statement 3 */
EXEC SQL ROLLBACK /* Statement 4 */
EXEC SQL CLOSE cur /* Statement 5 */
If the table T1 has no rows in it, which statement will cause the cursor "cur" to be
closed first?
A: Statement 1
B: Statement 2
C: Statement 3
D: Statement 4
(责任编辑：admin)要这答案加QQ：800020900 或加微信：vq800020900 获取
