摘要： 1. UpdateUpdate table_name Set column_name = value_new Where ...Tips: 更新多个值，用逗号分隔2. DeleteDelete From table_name where ...Tips: 删除全部数据Delete From table_name3. TopSelect top 3 * from table_nameSelect top 30 percent * from table_name4.通配符'%' - 一个或多个字符'_' - 一个字符'[abc]' - abc 中任意 阅读全文