// sql 语句结尾的地方须要 设置为空 SELECT * FROM users ; UPDATE users SET uname = 'hezhi' WHERE uid = 3 // 运行单行选中的sql 语句 跨界键 ctrl shift r // 删除 DELETE FROM users WHERE uid = 1; // 添加 INSERT INTO users(uid, uname, uaddress) VALUES(29, null , 'shanghai');