大约有 1,948 项符合查询结果（耗时：0.0205秒） [XML]
Linux/Unix command to determine if process is running?
...l/bash command that will determine if a specific process is running. e.g. mysqld , httpd ...
What is the simplest way/command to do this?
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Why can't I access DateTime->date in PHP's DateTime class?
... Why wouldn't one want this exact format? It is the same format as MySQL has for dates.
– Elia Iliashenko
Jul 16 '15 at 16:51
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How do I automatically update a timestamp in PostgreSQL
...omatically update the time stamp when a new row is inserted as I can do in MySQL using CURRENT_TIMESTAMP.
4 Answers
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Is it bad to have my virtualenv directory inside my git repository?
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If you, say pip install mysql-python, on a 64 bit machine, and then someone with a 32 bit machine tries to use it, it will not work. It uses a C module, like many Python modules do, to increase performance. I imagine Windows->Linux would also not...
搭建高可用mongodb集群（四）—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...这么多传统数据库的架构，那Nosql怎么去做到了这些呢？mysql要做到自动扩展需要加一个数据访问层用程序去扩展，数据库的增加、删除、备份还需要程序去控制。一但数据库的节点一多，要维护起来也是非常头疼的。不过mongodb...
What is the difference between synchronous and asynchronous programming (in node.js)
...f the sql driver you use. The driver should spawn a new thread, connect to mysql and run the query. Once done, post the result to the event queue, and Node will call the callback.
– Salvatorelab
Oct 21 '13 at 7:36
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JPA EntityManager: Why use persist() over merge()?
...ttached, entityToSave);
return attached;
}
Although if connected to MySQL merge() could be as efficient as persist() using a call to INSERT with ON DUPLICATE KEY UPDATE option, JPA is a very high level programming and you can't assume this is going to be the case everywhere.
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How to link Docker services across hosts?
...is taken from the blog post:
$ docker run -d -P -e constraint:storage=ssd mysql
One of the supported constraints is "node" that allows you pin a container to a specific hostname. The swarm also resolves links across nodes.
In my testing I got the impression that Swarm doesn't yet work with volum...
Limiting the number of records from mysqldump?
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As skaffman says, use the --where option:
mysqldump --opt --where="1 limit 1000000" database
Of course, that would give you the first million rows from every table.
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Are PHP short tags acceptable to use?
...not use any of the other features that might not be supported on a server? MYSQL vs MYSQLI? You will waste your time little by little, again and again writing long tags just to avoid a tiny chance of spending a little time to change to a better host.
– Dean Or
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