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MySQL: Fastest way to count number of rows
...ach time you try to count all rows. (based on primary key's column)
Using PHP to count rows is not very smart, because you have to send data from mysql to php. Why do it when you can achieve the same on the mysql side?
If the COUNT(*) is slow, you should run EXPLAIN on the query, and check if inde...
Efficiently convert rows to columns in sql server
... yourtable
group by ColumnName, id
order by id
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set @query = N'SELECT ' + @cols + N' from
(
select value, ColumnName
fr...
How to assert two list contain the same elements in Python? [duplicate]
... to assert that two list contain the same elements without regard to their order.
5 Answers
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How to join components of a path when you are constructing a URL in Python
...ng for a simple way to join them:
>>> url = 'https://api.foo.com/orders/bartag?spamStatus=awaiting_spam&page=1&pageSize=250'
Doing some looking around:
>>> split = urlparse.urlsplit(url)
>>> split
SplitResult(scheme='https', netloc='api.foo.com', path='/orders/...
比尔盖茨“未来生活预言”的科技豪宅（图） - 资讯 - 清泛网 - 专注C/C++及内核技术
...、中东石油大王，俄罗斯能源寡头……只要是钱能解决的问题，以上这些人都能解决。但世界上总也一些事是无法用钱来解决的，比如说知识，比如说艺术。
比尔·盖茨最自豪的还是他的私人图书馆，这是一座圆顶建筑，...
How to run travis-ci locally
...le change to .travis.yml and every little change I make to the source in order to run the build. With jenkins you can download jenkins and run locally. Does travis offer something like this?
...
Node.js / Express.js - How does app.router work?
... next() or make it so no more middleware get called. That means that the order in which I place my middleware calls is important, because some middleware depends on other middleware, and some middleware near the end might not even be called.
...
Is there a standard naming convention for git tags? [closed]
... Prefixing 'v' is also quite useful when sorting tags in alphabetical order. Other tags may also exist; whether officially in a master repository or to track a developer's work locally. With 'v' prefixes the release tags form their own group, instead of being scattered all over the rest of the ...
Ways to save Backbone.js model data?
...Tful server end code. Some people like Ruby, some people like .net, I like PHP. Particularly I like SLIM PHP micro-framework. SLIM PHP is a micro-framework that has a very elegant and simple tool set for dealing with RESTful activities. You can define routes (URIs) like in the examples above and dep...
Testing two JSON objects for equality ignoring child order in Java
...ON parsing library that supports comparing two JSON objects ignoring child order, specifically for unit testing JSON returning from a web service.
...