大约有 6,000 项符合查询结果(耗时:0.0217秒) [XML]

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国务院:网速提40%流量不清零 三运营商尚未回应 - 资讯 - 清泛网 - 专注C/C+...

...等领域,推广政府和社会资本合作模式,以竞争择优选择包括民营和国有企业在内的社会资本,扩大公共产品和服务供给,并依据绩效评价给予合理回报,是转变政府职能、激发市场活力、打造经济新增长点的重要改革举措。 ...
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How do I get the size of a java.sql.ResultSet?

...his method to calculate ResultSet size. This is great...no use of an extra SQL parameter. Please comment on this method. – Madeyedexter Mar 13 '15 at 5:21 6 ...
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Why should you use an ORM? [closed]

...nd portable. ORM implementation classes know how to write vendor-specific SQL, so you don't have to. share | improve this answer | follow | ...
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Truncating all tables in a Postgres database

I regularly need to delete all the data from my PostgreSQL database before a rebuild. How would I do this directly in SQL? ...
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程序员之网络安全系列(五):数字证书以及12306的证书问题 - 更多技术 - ...

...natures), so your connection may not be private.),我猜他们是为了性能?? 但是,就算浏览器地址栏的锁不能变绿,我们还得订票不是吗? 我觉得12306可能需要一个操作系统内置的认证机构来发一个证书,不然普通的用户根本不知道怎...
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How to count occurrences of a column value efficiently in SQL?

... FYI, On SQL Server 2005, the second query runs with almost half the execution cost (using SET SHOWPLAN_ALL ON) as the first. I thought the first would have been better, but the old school join beat it. – KM. ...
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How to import CSV file data into a PostgreSQL table?

..._codes FROM '/path/to/csv/ZIP_CODES.txt' DELIMITER ',' CSV HEADER; postgresql.org/docs/9.1/static/sql-copy.html – Barrett Clark Nov 8 '13 at 15:17 ...
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Rails 4 LIKE query - ActiveRecord adds quotes

... Isn't this vulnerable to SQL Injection? I mean, are those search strings sanitized? – jdscosta91 Oct 16 '14 at 17:08 6 ...
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Database development mistakes made by application developers [closed]

...xists--you should be using it. It's quite common to see this failure on MySQL databases. I don't believe MyISAM supports it. InnoDB does. You'll find people who are using MyISAM or those that are using InnoDB but aren't using it anyway. More here: How important are constraints like NOT NULL a...
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Rails: Using greater than/less than with a where statement

... it possible for the user to enter the value, it avoids the possibility of SQL injection attacks) – user1051849 Nov 4 '14 at 11:21 add a comment  |  ...