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Django in / not in query
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table1.objects.extra(where=["table1.id NOT IN (SELECT table2.key_to_table1 FROM table2 WHERE table2.id = some_parm)"])
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How add “or” in switch statements?
...sizes: 1=Small 2=Medium 3=Large");
Console.Write("Please enter your selection: ");
string s = Console.ReadLine();
int n = int.Parse(s);
int cost = 0;
switch(n)
{
case 1:
cost += 25;
break;
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What is private bytes, virtual bytes, working set?
...perfmon counter descriptions, here is the inside story about private bytes from "Private Bytes Performance Counter -- Beware!" on MSDN:
Q: When is a Private Byte not a Private Byte?
A: When it isn't resident.
The Private Bytes counter reports the commit charge of the process. That is to say, the am...
What is PAGEIOLATCH_SH wait type in SQL Server?
...ppens in queries that use indexes efficiently.
If your query is like this:
Select * from <table> where <col1> = <value> order by <PrimaryKey>
, check that you have a composite index on (col1, col_primary_key).
If you don't have one, then you'll need either a full INDEX SCAN ...
How to use DbContext.Database.SqlQuery(sql, params) with stored procedure? EF Code First C
...t accepted as the answer, its a much easier to write solution than the one selected as answer.
– Nikkoli
Oct 2 '12 at 18:43
10
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How to find the key of the largest value hash?
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You can use the select method if you want the key value pair returned:
hash.select {|k,v| v == hash.values.max }
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How do I get the entity that represents the current user in Symfony2?
...regular dql like
$em = $this->get('doctrine.orm.entity_manager');
"SELECT u FROM Acme\AuctionBundle\Entity\User u where u.username=".$username;
$q=$em->createQuery($query);
$user=$q->getResult();
the $user should now hold the user with this username ( you could also use other fields ...
How should I edit an Entity Framework connection string?
...nnection strings. Now go to the edmx, right click on the designer surface, select Update model from database, choose the connection string from the dropdown, Click next, Add or Refresh (select what you want) and finish.
In the output window it will show something like this,
Generated model file: U...
How to store arrays in MySQL?
... retrieve a person and all of their fruit you can do something like this:
SELECT p.*, f.*
FROM person p
INNER JOIN person_fruit pf
ON pf.person_id = p.id
INNER JOIN fruits f
ON f.fruit_name = pf.fruit_name
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How can I enable the Windows Server Task Scheduler History recording?
...plication and Service Logs then Microsoft, Windows, TaskScheduler and then select Operational.
You should have Actions showing in the preview pane with two sections - Operational and below that Event nnn, TaskScheduler. One of the items listed in the Operational section should be Properties. Click ...