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Backwards migration with Django South
... runs all new migrations, in order. (It looks at the database tables to decide which ones are 'new').
However, you can also specify any migration by number, and South will migrate your database, either forward or backward, to take it to that point. So, with the example files above, if you have alre...
Installing PDO driver on MySQL Linux server
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Thanks ryAn_Hdot! But that also didn't work for me. My solution now: I was running php7 and i had to do sudo apt-get install php-mysql
– johnnydoe82
Jun 22 '16 at 16:45
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SQL Server - When to use Clustered vs non-Clustered Index?
...treme care when picking a clustering key - it should be:
narrow (4 bytes ideal)
unique (it's the "row pointer" after all. If you don't make it unique SQL Server will do it for you in the background, costing you a couple of bytes for each entry times the number of rows and the number of nonclustere...
How do I create a SHA1 hash in ruby?
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For a Base64 encoded hash, to validated an Oauth signature, I used
require 'base64'
require 'hmac-sha1'
Base64.encode64((HMAC::SHA1.new('key') << 'base').digest).strip
share...
Remove file from SVN repository without deleting local copy
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I am getting a "svn: invalid option: --keep-local" - Is it because I am on 1.4.6?
– barfoon
May 11 '09 at 17:39
7
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Convert varchar to uniqueidentifier in SQL Server
...he schema for, contains a column defined as varchar(50) which stores uniqueidentifiers in the format 'a89b1acd95016ae6b9c8aabb07da2010' (no hyphens)
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How do you run a single query through mysql from the command line?
... it at all i.e. mysql.exe -u root -e "my query"
– solidau
Jun 25 '19 at 16:29
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show 2 more comments
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Showing a different background colour in Vim past 80 characters
... add this to your .vimrc to highlight 81 and onward (so 80 is your last valid column):
let &colorcolumn=join(range(81,999),",")
If you don't see a highlight, you may not have a ColorColumn highlight color set. Add this (adjust to suit your preferences):
highlight ColorColumn ctermbg=235 guib...
Which regular expression operator means 'Don't' match this character?
...tead of specifying all the characters literally, you can use shorthands inside character classes: [\w] (lowercase) will match any "word character" (letter, numbers and underscore), [\W] (uppercase) will match anything but word characters; similarly, [\d] will match the 0-9 digits while [\D] matches...
Why does “,,,” == Array(4) in Javascript?
... constructor... anyway, in a system (dont bother what kind of system), <identity_X>===<identity_X> sould always be true!
– ZEE
Jun 15 '12 at 17:04
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