07修改数据

1.修改全部数据

UPDATE table_name

SET {col_name = EXPRESSION}[,...n]

示例1：将所有用户性别改为男性

---

UPDATE users SET user_sex = '男'

---

示例2：将所有玩家的所有游戏得分都增加100分

---

UPDATE scores SET score = score+100

---

2.修改特点数据

UPDATE table_name SET {col_name = expression}[,...n] WHERE condition_expression

示例：把QQ为“12302”的玩家性别都改为女性。

---

UPDATE users SET user_sex = "女" WHERE user_qq = "12302"

---