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COUNT DISTINCT with CONDITIONS
...me;
The first count(distinct...) is easy.
The second one, looks somewhat complex, is actually the same as the first one, except that you use case...when clause. In the case...when clause, you filter only positive values. Zeros or negative values would be evaluated as null and won't be included in ...
How to split a string, but also keep the delimiters?
... empty character before ; or after ;.
Hope this helps.
EDIT Fabian Steeg comments on Readability is valid. Readability is always the problem for RegEx. One thing, I do to help easing this is to create a variable whose name represent what the regex does and use Java String format to help that. Like...
Differences between git pull origin master & git pull origin/master
...r branch, lets say am on another branch in my repo and then am doing above command, will it update my current branch with the origin remote changes or my master branch with the changes ?
– Rachel
May 21 '10 at 16:38
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How do I reword the very first git commit message?
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Do git rebase -i --root
(point to root instead of pointing to a specific commit)
This way, the first commit is also included and you can just reword it like any other commit.
The --root option was introduced in Git v1.7.12 (2012). Before then the only option was to use filter-branch or --amend, ...
Where can I find a NuGet package for upgrading to System.Web.Http v5.0.0.0?
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How can I edit a view using phpMyAdmin 3.2.4?
I need to simply edit a very complicated view in phpMyAdmin 3.2.4 but I cannot figure how to do that. Any suggestions?
Thanks!
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WebException how to get whole response with a body?
...this case it's obvious to the attention-paying reader and @iwtu, but Fully comprehensive answers can make the real difference to the beginners reading this answer;)
– Jeroen
Nov 18 '16 at 12:18
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Replace all non-alphanumeric characters in a string
...doing more than one replace, this will perform slightly quicker if you pre-compile the regex, e.g., import re; regex = re.compile('[^0-9a-zA-Z]+'); regex.sub('*', 'h^&ell.,|o w]{+orld')
– Chris
Jun 2 '18 at 15:47
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