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