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Django database query: How to get object by id?
...turns the identity of an object. In a majority of cases referencing things by id will do the right thing e.g. Class.objects.get(id=this_object_id) work. But that's something to consider I guess.
– Tom
Jul 28 '16 at 20:45
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How to fetch the row count for all tables in a SQL SERVER database [duplicate]
...CT ''?'', COUNT(*) FROM ?'
SELECT table_name, row_count FROM #counts ORDER BY table_name, row_count DESC
DROP TABLE #counts
The output will be a list of tables and their row counts.
If you just want the total row count across the whole database, appending:
SELECT SUM(row_count) AS total_row_coun...
Kill some processes by .exe file name
How can I kill some active processes by searching for their .exe filenames in C# .NET or C++?
6 Answers
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What does “1 line adds whitespace errors” mean when applying a patch?
...manual explains:
What are considered whitespace errors is controlled
by core.whitespace configuration. By default, trailing whitespaces
(including lines that solely consist of whitespaces) and a space
character that is immediately followed by a tab character inside the
initial indent of ...
python max function using 'key' and lambda expression
..., it simply returns the object that is the largest.
How does key work?
By default in Python 2 key compares items based on a set of rules based on the type of the objects (for example a string is always greater than an integer).
To modify the object before comparison, or to compare based on a pa...
EJB's - when to use Remote and/or local interfaces?
...distributing EJBs on a different tier and they fixed the spec (in EJB 2.0) by introducing the concept of Local interfaces so that clients collocated in the same virtual machine with the EJB container can call EJBs using direct method invocation, totally bypassing RMI semantics (and the associated ov...
The Definitive C++ Book Guide and List
..., 2014) (updated for C++11/C++14) An introduction to programming using C++ by the creator of the language. A good read, that assumes no previous programming experience, but is not only for beginners.
Introductory, with previous programming experience
A Tour of C++ (Bjarne Stroustrup) (2nd edition...
“Order by Col1, Col2” using entity framework
I need to order by 2 columns using the entity framework.
5 Answers
5
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Redis connection to 127.0.0.1:6379 failed - connect ECONNREFUSED
I working with node.js by expressjs I try to store an account to session. So, i try to test to use session with code in expressjs
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Is the “struct hack” technically undefined behavior?
... but there is no way it can make such restrictions for an object allocated by malloc, when you have merely converted the returned void * to a pointer to [a struct containing] an array. It's still valid to access any part of the allocated object using a pointer to char (or preferably unsigned char).
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