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How to 'insert if not exists' in MySQL?
... ON DUPLICATE KEY UPDATE.
Imagine we have a table:
CREATE TABLE `transcripts` (
`ensembl_transcript_id` varchar(20) NOT NULL,
`transcript_chrom_start` int(10) unsigned NOT NULL,
`transcript_chrom_end` int(10) unsigned NOT NULL,
PRIMARY KEY (`ensembl_transcript_id`)
) ENGINE=InnoDB DEFAULT CHAR...
Generic deep diff between two objects
...
Here is a JavaScript library which you can use for finding diff between two JavaScript objects:
Github URL:
https://github.com/cosmicanant/recursive-diff
Npmjs url: https://www.npmjs.com/package/recursive-diff
You can use recursive-diff li...
How do I enable EF migrations for multiple contexts to separate databases?
...eOfMainProject
-ConnectionStringName ContextA
Steps to create migration scripts in Package Manager Console:
Run command
Add-Migration MYMIGRATION -ConfigurationTypeName ConfigurationA -ProjectName
ProjectContextIsInIfNotMainOne -StartupProjectName NameOfMainProject
-ConnectionStringName Contex...
How to convert a String to its equivalent LINQ Expression Tree?
...
You might take a look at the DLR. It allows you to evaluate and execute scripts inside .NET 2.0 application. Here's a sample with IronRuby:
using System;
using IronRuby;
using IronRuby.Runtime;
using Microsoft.Scripting.Hosting;
class App
{
static void Main()
{
var setup = new S...
List of foreign keys and the tables they reference
...
Here is an all-purpose script we use that has been incredibly handy.
Save it off so you can execute it directly (@fkeys.sql). It will let you search by Owner and either the Parent or Child table and show foreign key relationships. The current ...
Select the values of one property on all objects of an array in PowerShell
...r alternative:
# By property name (string):
$objects.ForEach('Name')
# By script block (more flexibility; like ForEach-Object)
$objects.ForEach({ $_.Name })
This approach is similar to member enumeration, with the same tradeoffs, except that pipeline logic is not applied; it is marginally slower,...
VIP会员中心 · App Inventor 2 中文网，少儿编程陪伴者
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Difference between exit(0) and exit(1) in Python
...e program is called (though 99% of the time, if you're just running Python scripts, it doesn't matter).
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Can git operate in “silent mode”?
...ks, though. And then you can just do "quiet_git push" etc. later on in the script.
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Get all attributes of an element using jQuery
...
A debugging script (jquery solution based on the answer above by hashchange)
function getAttributes ( $node ) {
$.each( $node[0].attributes, function ( index, attribute ) {
console.log(attribute.name+':'+attribute.value);
...