摘要:
1.打开终端命令行输入 ssh-keygen -t rsa -C “flhw” 弹出此提示一路回车即可 Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): 公 阅读全文
摘要:
单表查询语法 格式: SELECT DISTINCT 字段1,字段2... FROM 表名 WHERE 条件 GROUP BY field HAVING 筛选 ORDER BY field LIMIT 限制条数 关键字执行优先级: from where group by select distinc 阅读全文