表名字是:test_tb_grade
脚本:
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (1, '张三', '2017-02-01', '成功');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (2, '张三', '2017-02-01', '成功');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (3, '张三', '2017-01-01', '失败');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (4, '李四', '2017-01-01', '成功');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (5, '李四', '2017-03-01', '失败');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (6, '李四', '2017-02-01', '成功');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (7, '王五', '2017-01-01', '成功');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (8, '王五', '2017-03-01', '失败');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (9, '王五', '2017-03-01', '失败');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (10, '张三', '2017-02-01', '成功');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (11, '张三', '2017-02-01', '失败');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (12, '张三', '2017-01-01', '无效');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (13, '李四', '2017-01-01', '无效');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (14, '李四', '2017-03-01', '无效');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (15, '李四', '2017-01-01', '成功');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (16, '李四', '2017-03-01', '成功');
INSERT INTO test_tb_grade
(id
, USER_NAME
, REQUEST_DATE
, CODE
) VALUES (17, '王五', '2017-03-01', '无效');
求得结果如下:
请问sql 可以实现吗