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How to prepend a string to a column value in MySQL?
...hat:
UPDATE tbl SET col=CONCAT('test',col);
If you want to get cleverer and only update columns which don't already have test prepended, try
UPDATE tbl SET col=CONCAT('test',col)
WHERE col NOT LIKE 'test%';
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Unique constraint on multiple columns
...o I add a unique constraint for columns fcode, scode, dcode with t-sql and/or management studio ? fcode, scode, dcode must be unique together.
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Django queries - id vs pk
...s preferable. See the documentation of built-in functionid in the Python standard library. (It is the same in Python 2.)
– Lutz Prechelt
Mar 23 '16 at 8:17
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What is the most efficient way to store tags in a database?
... what is the most effective way to store tags so that they may be searched and filtered?
7 Answers
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Specifying Maven's local repository location as a CLI parameter
...et the location of the local Maven repository as argument on the Maven command line?
3 Answers
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Get Unix Epoch Time in Swift
...rking/AlamoFire (github.com/Alamofire/Alamofire) to load currentmillis.com and then parse the html of the page. Note that you have to account for networking delays and check for connectivity. I decided to just use Foundation...
– Chase Roberts
Dec 9 '16 at 20:2...
How can I make Visual Studio's build be very verbose?
... General
Change the setting for Suppress Startup Banner to No
The cl command line(s) will be shown in the output window.
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Add a fragment to the URL without causing a redirect?
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No worries - and it makes you wonder why it always returns it.
– alex
Nov 26 '10 at 2:13
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Android Studio Multi-Windows for One Project
I'm wondering if anyone knows how to open two windows of Android Studio with both having the same project. I know you can drag tabs out, but that allows you to only edit that one file. I want two fully-featured windows with each being able to see the Project Files/Structure.
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Nginx not picking up site in sites-enabled?
... For me this also fixed it! Thanks!
– Sander Versluys
Nov 15 '13 at 14:11
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