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How do I execute a stored procedure once for each row returned by query?
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You can thank people by up-voting their comment. Who knows, maybe that way they'll have the rep to make the edit, next time! :-)
– Robino
Jun 25 '14 at 7:57
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CSS styling in Django forms
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Yes and no. First CSS classes are by convention used for styling, if you need an unique identifier its better to use id. Second its usually the template side's responsobilty to do exaclty this, Esspecially if you are going to access this class via frontend me...
How to implement the activity stream in a social network
...t as you can. Structure so that you can quickly grab a batch of activities by activity ID or by using a set of friend IDs with time constraints.
Publish the activity IDs to Redis whenever an activity record is created, adding the ID to an "activity stream" list for every user who is a friend/subscri...
How update the _id of one MongoDB Document?
...rted with a duplicate value in a unique indexed field. You could fix this by doing the delete first, but that is a bad idea because if your insert fails for some reason your data is now lost. You must instead drop your index, perform the work, then restore the index.
– skelly...
Foreign Key to multiple tables
...pends on your needs.
You could simply create two columns in Ticket, OwnedByUserId and OwnedByGroupId, and have nullable Foreign Keys to each table.
You could create M:M reference tables enabling both ticket:user and ticket:group relationships. Perhaps in future you will want to allow a single tick...
Linq to Entities join vs groupjoin
...th child groups. This can be turned into a flat list of parent-child pairs by two small additions:
from p in parents
join c in children on p.Id equals c.Id into g // <= into
from c in g.DefaultIfEmpty() // <= flattens the groups
select new { Parent = p.Value, Child = c?.ChildValu...
How to find duplicates in 2 columns not 1
...e_id,
upcharge_title,
count(*)
from your_table
group by stone_id,
upcharge_title
having count(*) > 1
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SQLAlchemy ORDER BY DESCENDING?
How can I use ORDER BY descending in a SQLAlchemy query like the following?
6 Answers
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ViewParam vs @ManagedProperty(value = “#{param.id}”)
... if you want the view parameters to survive any validation failures caused by forms enclosed in the view, otherwise you need to manually retain all request parameters for the subsequent requests by <f:param> in the command components.
Example:
<f:metadata>
<f:viewParam id="user_...
How to find serial number of Android device?
...gt;=2.3. Only 2.2 has the problems mentioned in the post.
Several devices by several manufacturers are affected by the ANDROID_ID bug in 2.2.
As far as I've been able to determine, all affected devices have the same ANDROID_ID, which is 9774d56d682e549c. Which is also the same device id reported b...