增:insert
语法:INSERT [INTO] 表values (值列表)
INSERT INTO person (username,password,address) VALUES ('admin1',123,'重庆')
写完之后点击图中的运行,下同。
例如下图:
删: delete
语法:DELETE from 表[where 条件]
DELETE FROM person WHERE id=1
改:update
语法:UPDATE 表 set 列 = 值 [where 条件]
UPDATE person SET password='1234567' where ID=1
查:select
语法:SELECT *from 表 where…
注:当为 * 时,就是默认查找所有信息
SELECT * FROM person WHERE id=1
That’s all, thank you for watching
hahahhahahahahaha…