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Simple way to transpose columns and rows in SQL?
How do I simply switch columns with rows in SQL?
Is there any simple command to transpose?
9 Answers
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Why shouldn't I use mysql_* functions in PHP?
...nctions? (e.g. mysql_query() , mysql_connect() or mysql_real_escape_string() )?
13 Answers
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How to select/get drop down option in Selenium 2
I am converting my selenium 1 code to selenium 2 and can't find any easy way to select a label in a drop down menu or get the selected value of a drop down. Do you know how to do that in Selenium 2?
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Spring JPA selecting specific columns
I am using Spring JPA to perform all database operations. However I don't know how to select specific columns from a table in Spring JPA?
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How to use the toString method in Java?
Can anybody explain to me the concept of the toString() method, defined in the Object class? How is it used, and what is its purpose?
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Call UrlHelper in models in ASP.NET MVC
I need to generate some URLs in a model in ASP.NET MVC. I'd like to call something like UrlHelper.Action() which uses the routes to generate the URL. I don't mind filling the usual blanks, like the hostname, scheme and so on.
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MySQL和MongoDB设计实例进行对比 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...表来单独保存。
CREATE TABLE IF NOT EXISTS `mobiles` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`name` VARCHAR(100) NOT NULL,
`brand` VARCHAR(100) NOT NULL,
PRIMARY KEY (`id`)
);
CREATE TABLE IF NOT EXISTS `mobile_params` (
`id` int(10) unsigned NOT NULL A...
ActiveRecord: List columns in table from console
I know that you can ask ActiveRecord to list tables in console using:
8 Answers
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Do I need to create indexes on foreign keys on Oracle?
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The foreign key constraint alone does not provide the index on Oracle - one must (and should) be created.
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Get names of all keys in the collection
I'd like to get the names of all the keys in a MongoDB collection.
21 Answers
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