我有两张桌子:
表1:
+---------------------+
|id | name | company|
+---------------------+
|1 | sai | abc |
|2 | sri | xyz |
|4 | abx | bcd |
+---------------------+
表2:
+---------------------------+
| id | emp_name | salary |
+---------------------------+
| 1 | sai | 20k |
| 4 | abx | 40k |
+---------------------------+
当比较两个表时,table1
的不匹配数据才会出现。
结果:
+----------------------+
|id | name | company |
+----------------------+
|2 | sri | xyz |
+----------------------+
我尝试过:
SELECT * FROM Table1 a WHERE NOT EXISTS (SELECT * FROM Table2 b WHERE a.id = b.id)
答案 0 :(得分:0)
一个选项使用LEFT JOIN
:
SELECT t1.*
FROM Table1 t1
LEFT JOIN Table2 t2
ON t1.id = t2.id
WHERE t2.id IS NULL
在这里演示: