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'IF' in 'SELECT' statement - choose output value based on column values
...IF(type = 'P', amount, amount * -1) as amount
FROM report
See http://dev.mysql.com/doc/refman/5.0/en/control-flow-functions.html.
Additionally, you could handle when the condition is null. In the case of a null amount:
SELECT id,
IF(type = 'P', IFNULL(amount,0), IFNULL(amount,0) * -1) as...
How do I get the row count of a pandas DataFrame?
... answered Apr 11 '13 at 8:24
rootroot
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【软著】软件著作权证书申请流程及注意事项，模板分享 - App Inventor 2 中...
...码文档中不要有代码空行及注释。50行*60页
6、AppInventor2如何申请软著？
一般的软件比如使用Java开发，源码中准备的就是.java代码，但是appinventor没有具体的代码怎么办？不要紧，将.aia导出后，用压缩软件打开aia源码，在src目...
How do you add Boost libraries in CMakeLists.txt?
...s:
When searching, FindBoost checks the environment variable $ENV{BOOST_ROOT}. You can set this variable before calling find_package if necessary.
When you have multiple build-versions of boost (multi-threaded, static, shared, etc.) you can specify you desired configuration before calling find_pa...
SQL Client for Mac OS X that works with MS SQL Server [closed]
...r, which can work very well with almost every type of databases, including MySQL, SQL Server, Oracle, PostgreSQL, SAP Hana, Redis... just to name a few. The DB connector driver can be added in a very easy to understand way. I've also tried Oracle SQL Developer, DB Visualizer but they do not work w...
Android中Java和JavaScript交互 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...页中，JavaScript又是一个很举足轻重的脚本。本文将介绍如何实现Java代码和Javascript代码的相互调用。如何实现
实现Java和js交互十分便捷。通常只需要以下几步：
WebView开启JavaScript脚本执行。
WebView设置供JavaScript调用的交互接...
2016年最适合小投资的10个创业项目 - 资讯 - 清泛网 - 专注C/C++及内核技术
...，面对行行色色的创业项目让很多人挑花了眼，不知道该如何抉择。创业看似很难其实简单，抓住好项目你就勇敢之前！小投资创业项目是很多创业者的首选，面对行行色色的创业项目让很多人挑花了眼，不知道该如何抉择。小...
Why am I getting error for apple-touch-icon-precomposed.png
...e-touch-icon-precomposed.png and apple-touch-icon.png and upload it to the root directory of the server. After that, the error should be gone.
I noticed lots of requests for apple-touch-icon-precomposed.png and apple-touch-icon.png in the logs that tried to load the images from the root director...
What are CN, OU, DC in an LDAP search?
...e format.
You read it from right to left, the right-most component is the root of the tree, and the left most component is the node (or leaf) you want to reach.
Each = pair is a search criteria.
With your example query
("CN=Dev-India,OU=Distribution Groups,DC=gp,DC=gl,DC=google,DC=com");
In e...
“’” showing on page instead of “ ' ”
... when you create it.
You're most likely using SQL Server, but here is some MySQL code (copied from this article):
CREATE DATABASE db_name CHARACTER SET utf8;
CREATE TABLE tbl_name (...) CHARACTER SET utf8;
If your table is however already UTF-8, then you need to take a step back. Who or what put th...