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What's the difference between INNER JOIN, LEFT JOIN, RIGHT JOIN and FULL JOIN? [duplicate]
... is the top left picture not simply SELECT * FROM TableB;? Why is the top middle picture not SELECT * FROM A INTERSECT SELECT * FROM B ? etc
– onedaywhen
Sep 9 '11 at 10:41
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Script to kill all connections to a database (More than RESTRICTED_USER ROLLBACK)
...8000) = '';
SELECT @kill = @kill + 'kill ' + CONVERT(varchar(5), session_id) + ';'
FROM sys.dm_exec_sessions
WHERE database_id = db_id('MyDB')
EXEC(@kill);
For MS SQL Server 2000, 2005, 2008
USE master;
DECLARE @kill varchar(8000); SET @kill = '';
SELECT @kill = @kill + 'kill ' + CONVERT...
REST API Best practices: Where to put parameters? [closed]
...nted best practices, I have not found them yet. However, here are a few guidelines I use when determining where to put parameters in an url:
Optional parameters tend to be easier to put in the query string.
If you want to return a 404 error when the parameter value does not correspond to an exist...
Can Flask have optional URL parameters?
...
Another way is to write
@user.route('/<user_id>', defaults={'username': None})
@user.route('/<user_id>/<username>')
def show(user_id, username):
pass
But I guess that you want to write a single route and mark username as optional? If that's the ca...
Setting background colour of Android layout element
I am trying to, somewhat clone the design of an activity from a set of slides on Android UI design . However I am having a problem with a very simple task.
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On Duplicate Key Update same as insert
I've searched around but didn't find if it's possible.
8 Answers
8
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How to delete object from array inside foreach loop?
...h an array of objects and want to delete one of the objects based on it's 'id' property, but my code doesn't work.
6 Answer...
Multiple GitHub Accounts & SSH Config
...hub.com
HostName github.com
PreferredAuthentications publickey
IdentityFile ~/.ssh/me_rsa
Host work.github.com
HostName github.com
PreferredAuthentications publickey
IdentityFile ~/.ssh/work_rsa
My work profile didn't take until I did a ssh-add ~/.ssh/work_rsa. After that ...
How can I get the current user's username in Bash?
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@BillMan, what does that even mean? Could you provide an example?
– Dejay Clayton
Nov 18 '15 at 16:06
17
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SQLAlchemy ORDER BY DESCENDING?
...have done:
.order_by(model.Entry.amount.desc())
This is handy since it avoids an import, and you can use it on other places such as in a relation definition, etc.
For more information, you can refer this
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