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Multiple Indexes vs Multi-Column Indexes
I've just been adding an Index to a table in SQL Server 2005 and it got me thinking. What is the difference between creating 1 index and defining multiple columns over having 1 index per column you want to index.
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SET NAMES utf8 in MySQL?
...ters to show on websites properly when the data was queried from MySQL. My tables and columns are set to UTF-8 in MySQL—so should this be necessary?
– NexusRex
Aug 30 '11 at 19:15
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What methods of ‘clearfix’ can I use?
...one css statement. Additionally, using display: block (instead of display: table) allows margins to collapse properly when elements with clearfix are siblings.
.container::after {
content: "";
display: block;
clear: both;
}
This is the most modern version of the clearfix.
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How to Use Order By for Multiple Columns in Laravel 4?
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Is there a way to add an orderBy on an established query?
– Rafael
Jan 16 '15 at 21:43
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PowerShell script to return versions of .NET Framework on a machine?
...me, Version, Release
Based on the MSDN article, you could build a lookup table and return the marketing product version number for releases after 4.5:
$Lookup = @{
378389 = [version]'4.5'
378675 = [version]'4.5.1'
378758 = [version]'4.5.1'
379893 = [version]'4.5.2'
393295 = [v...
.NET unique object identifier
...e cost, but such a thing could be helpful if one compares two distinct immutable objects and finds them equal; if one when possible overwrites the reference to the newer one with a reference to the older one, one can avoid having many redundant references to identical but distinct objects.
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Is it possible to break a long line to multiple lines in Python [duplicate]
...t a list of strings instead of one long string:
queryText= "SELECT * FROM TABLE1 AS T1"\
"JOIN TABLE2 AS T2 ON T1.SOMETHING = T2.SOMETHING"\
"JOIN TABLE3 AS T3 ON T3.SOMETHING = T2.SOMETHING"\
"WHERE SOMETHING BETWEEN <WHATEVER> AND <WHATEVER ELSE>"\
"ORDER BY WHATEVERS DESC"
kinda li...
What is the best place for storing uploaded images, SQL database or disk file system? [closed]
...ll consume a lot of memory. Also, if you use a storage engine that employs table-locks for writes (ISAM for example), your files table might be locked often depending on the size / rate of files you are storing there.
Regarding security - I usually store the files in a directory that is outside of...
How to do associative array/hashing in JavaScript
...ash/AS3 Dictionary does. In JavaScript, var obj1 = {}; var obj2 = {}; var table= {}; table[obj1] = "A"; table[obj2] = "B"; alert(table[obj1]); //displays B, because it can't differentiate between keys obj1 and obj2; they're both converted to string and just become something like "Object". Total fa...
Why does ContentResolver.requestSync not trigger a sync?
...ed when it's time to sync. I figure you already have this in place.
4. Establish a binding between an Account-type and a Content Authority
Looking back again at AndroidManifest, that strange <meta-data> tag in our service is the key piece that establishes the binding between a ContentAutho...