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How do I rename a column in a database table using SQL?
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Specifically for SQL Server, use sp_rename
USE AdventureWorks;
GO
EXEC sp_rename 'Sales.SalesTerritory.TerritoryID', 'TerrID', 'COLUMN';
GO
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How to check a radio button with jQuery?
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For versions of jQuery equal or above (>=) 1.6, use:
$("#radio_1").prop("checked", true);
For versions prior to (<) 1.6, use:
$("#radio_1").attr('checked', 'checked');
Tip: You may also want to call click() or cha...
Storing Data in MySQL as JSON
...ly one definite answer on how to abuse a database system so it makes sense for you. Given that the article is very old and their main reason against Mongo and Couch was immaturity, I'd re-evaluate these two if MySQL doesn't cut it for you. They should have grown a lot by now.
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When to use self over $this?
...lf to refer to the
current class. In other words, use
$this->member for non-static members,
use self::$member for static members.
Full Answer
Here is an example of correct usage of $this and self for non-static and static member variables:
<?php
class X {
private $non_static_memb...
Pass parameter to controller from @Html.ActionLink MVC 4
...ver have confusion between the gazillions of overloads that Microsoft made for those helpers.
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SVG Positioning
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Everything in the g element is positioned relative to the current transform matrix.
To move the content, just put the transformation in the g element:
<g transform="translate(20,2.5) rotate(10)">
<rect x="0" y="0" width="60" height="10"/>
</g>
Links: Example from the SV...
jQuery: Test if checkbox is NOT checked
...te. The current state is stored in the property checked of the dom element for that checkbox.
See Properties and Attributes in HTML
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Error 1022 - Can't write; duplicate key in table
...r database. Just rename the constraints if so.
Constraints must be unique for the entire database, not just for the specific table you are creating/altering.
To find out where the constraints are currently in use you can use the following query:
SELECT `TABLE_SCHEMA`, `TABLE_NAME`
FROM `informati...
How to get the number of days of difference between two dates on mysql?
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yeah i forgot about the date format when i made the question ;p thank you
– Audel
Mar 22 '10 at 8:18
4
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“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
...it in order to avoid some security vulnerabilities or bugs where one would forget to give a value to a variable that will be used later in the script. What PHP does in the case of undeclared variables is issue a very low level error, E_NOTICE, one that is not even reported by default, but the Manual...