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快云vps怎么备份数据？

威海服务器/VPS 威海VPS
3709

1、windows系统通过在服务器中安装FTP工具将数据备份到本地；

2、linux系统通过ssh远程登录后安装xftp工具进行本地和服务器数据传输。

来源：景安

Public @ 2016-11-09 16:13:15

如何避免ASP的SQL的执行效率低

威海服务器/VPS 威海SQL Server
4359

以下是一些提高ASP SQL执行效率的方法： 1. 编写高效的SQL查询：确保SQL查询语句是优化的，包括选择合适的索引、避免使用不必要的JOIN操作和子查询、避免使用LIKE操作符以及尽可能减少SELECT返回的列数等。 2. 参数化查询：使用参数化查询而不是拼接字符串来构建SQL查询语句，这样可以避免SQL注入攻击，并且能够重复使用已编译的查询计划。 3. 缓存查询结果：如果某些查询结果在一

Public @ 2023-07-31 15:00:28

海量数据库的查询优化及分页算法方案

威海服务器/VPS 威海SQL Server
2718

很多人不知道SQL语句在SQL SERVER中是如何执行的,他们担心自己所写的SQL语句会被SQL SERVER误解。比如：select * from table1 where name='zhangsan' and tID > 10000和执行:select * from table1 where tID > 10000 and name='zhangsan&

Public @ 2021-08-24 15:47:54

快云VPS支持多种环境多个数据库吗？

威海服务器/VPS 威海VPS
2981

支持，可同时安装mysql和mssql。

Public @ 2020-12-03 16:13:14

快云VPS快速入门

威海服务器/VPS 威海VPS
3287

一、怎么购买/试用快云VPS1、登陆快云官方网站http://www.kuaiyun.cn/，注册会员，填写真实有效的会员信息；2、登陆会员，来到快云VPS所在页面,选择您需要的快云VPS型号，点击购买/申请试用；1.png3、如果您是申请试用，请及时联系您的商务经理(或联系24小时在线客服QQ:4006598598电话:4006598598)审核开通；如果您测试觉得不错，可进入会员中心，在我的云

Public @ 2019-01-03 16:13:16

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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.023073s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.017438s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4753 LIMIT 1 [ RunTime:0.015757s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.016062s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by times desc limit 100 [ RunTime:0.016194s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.017190s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4753 LIMIT 1 [ RunTime:0.015594s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] update `ob_article` set views=views+1 where id=4753 [ RunTime:0.016533s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海服务器/VPS' AND `status` <> -1 LIMIT 1 [ RunTime:0.022598s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海服务器/VPS' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.051718s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海VPS' AND `status` <> -1 LIMIT 1 [ RunTime:0.022599s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海VPS' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.038947s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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