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LINQ - Left Join, Group By, and Count
...into j1
from j2 in j1.DefaultIfEmpty()
group j2 by p.ParentId into grouped
select new { ParentId = grouped.Key, Count = grouped.Count(t=>t.ChildId != null) }
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Android device does not show up in adb list [closed]
... Android Nougat: Settings -> Developer options -> Networking -> Select USB Configuration. Changing it to MTP worked for me.
– sffc
Sep 5 '17 at 1:54
6
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SQL Server - Return value after INSERT
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No need for a separate SELECT...
INSERT INTO table (name)
OUTPUT Inserted.ID
VALUES('bob');
This works for non-IDENTITY columns (such as GUIDs) too
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How to change the Eclipse default workspace?
...down>Workspaces.
There you can set a flag to make Eclipse prompt you to select a workspace at startup by checking the "Prompt for workspace at startup" checkbox.
You can set the number of previous workspaces to remember also. Finally there is a list of recent workspaces. If you just remove all b...
PostgreSQL: Drop PostgreSQL database through command line [closed]
...rrently taking place against your database, including all idle processes.
SELECT * FROM pg_stat_activity WHERE datname='database name';
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Maven2: Best practice for Enterprise Project (EAR file)
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What helped me a lot was to run the Maven archetype:generate goal and select from one of the archetypes, some of which seem to be updated regularly (in particular JBoss seems to be well maintained).
mvn archetype:generate
Hundreds of archetypes appeared in a numbered list from which to selec...
How to check if an element does NOT have a specific class?
...t one for the case in the question, but just as a reference if you need to select elements that don't have a certain class, you can use the not selector:
// select all divs that don't have class test
$( 'div' ).not( ".test" );
$( 'div:not(.test)' ); // <-- alternative
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JQuery: detect change in input field [duplicate]
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});
If you use the change handler, this will only fire after the user deselects the input box, which may not be what you want.
There is an example of both here: http://jsfiddle.net/6bSX6/
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How do you view ALL text from an ntext or nvarchar(max) in SSMS?
...tions on the Query menu, or right-click in the SQL Server Query window and select Query Options.
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Maximum Characters Retrieved
Enter a number from 1 through 65535 to specify the maximum number of characters that will be displayed in each cell.
Maximum is, as you see, 64k. T...
MySQL error: key specification without a key length
...d, and the trick is to choose a number N that’s long enough to give good selectivity, but short enough to save space. The prefix should be long enough to make the index nearly as useful as it would be if you’d indexed the whole column.
Before we go further let us define some important terms. In...