如果column2 = a，SQL编辑column1

Question

我在下表中有一个数据库：

type__ number

 a ____ 3
 b ____ 1
 a ____ 1
 b ____ 2
 a ____ 3
 a ____ 2
 a ____ 2
 a ____ 1
 b ____ 2

如何+1全部a或b行？谢谢

Answer 1

- 更新type = a

的所有行

UPDATE A
  SET  A.number = A.number + 1
FROM YourTable AS A
WHERE  A.type = 'a';

- 更新type = b

的所有行

UPDATE A
  SET  A.number = A.number + 1
FROM YourTable AS A
WHERE  A.type = 'b';