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HTML.ActionLink method
... What's strange is if you miss out the last parameter, it appends for me ?Length=8 to the current action
– Chris S
Aug 19 '09 at 10:22
32
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Send message to specific client with socket.io and node.js
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Well you have to grab the client for that (surprise), you can either go the simple way:
var io = io.listen(server);
io.clients[sessionID].send()
Which may break, I doubt it, but it's always a possibility that io.clients might get changed, so use the above...
How do you check if a certain index exists in a table?
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You can do it using a straight forward select like this:
SELECT *
FROM sys.indexes
WHERE name='YourIndexName' AND object_id = OBJECT_ID('Schema.YourTableName')
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How to implement has_many :through relationships with Mongoid and mongodb?
...ld model that differently in MongoDB using a field containing an array of 'foreign' keys on either side. For example:
class Physician
include Mongoid::Document
has_and_belongs_to_many :patients
end
class Patient
include Mongoid::Document
has_and_belongs_to_many :physicians
end
In other w...
How to set initial value and auto increment in MySQL?
How do I set the initial value for an "id" column in a MySQL table that start from 1001?
10 Answers
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SQL Server : Columns to Rows
Looking for elegant (or any) solution to convert columns to rows.
6 Answers
6
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SQL UPDATE SET one column to be equal to a value in a related table referenced by a different column
...s you might want
I recommend to check what the result set to update is before running the update (same query, just with a select):
select *
from QuestionTrackings q
inner join QuestionAnswers a
on q.AnswerID = a.AnswerID
where q.QuestionID is null -- and other conditions you might want
Particul...
Add new item count to icon on button - Android
...ble/badge_circle"/>
</RelativeLayout>
Hopefully that's enough information to at least get you pointed in the right direction!
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Update multiple rows in same query using PostgreSQL
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Works great, thank you for clarifying! The Postgres documentation for this makes for a bit of a confusing read.
– skwidbreth
May 13 '16 at 20:37
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Django database query: How to get object by id?
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If you want to get an object, using get() is more straightforward:
obj = Class.objects.get(pk=this_object_id)
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