+----+---------+--------------------+----------+------+---------------------+---------+-------------+------------+----------+
| id | pname | pmail | pgender | page | pdetails | pnumber | ddepartment | date | time |
+----+---------+--------------------+----------+------+---------------------+---------+-------------+------------+----------+
| 1 | karuna | karuna@gmail.com | female | 21 | hfsdh gfhdf shdh | 2332 | Surgeon | 2018-05-15 | 16:00:00 |
+----+---------+--------------------+----------+------+---------------------+---------+-------------+------------+----------+
这是我的数据库表appointment。
每当我执行前两个查询时，它们都会完美运行
select * from appointment;(execute )
select * from appointment where pname = 'karuna';(execute)
但是当我尝试执行这两个查询时，我得到的结果是空集
select *from appointment where pmail='karuna@gmail.com';(empty set (0.00 sec))
select *from appointment where ddepartment='Surgeon';(empty set (0.00 sec))