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How do I return rows with a specific value first?
...le, DB2, and many other database systems, this is what you can use:
ORDER BY CASE WHEN city = 'New York' THEN 1 ELSE 2 END, city
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Visualizing branch topology in Git
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See also answer by Andrew regarding --simplify-by-decoration option.
– ruvim
Nov 14 '16 at 23:24
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How can I use optional parameters in a T-SQL stored procedure?
...a, your schema, and your actual usage:
Dynamic Search Conditions in T-SQL by by Erland Sommarskog
The Curse and Blessings of Dynamic SQL by Erland Sommarskog
If you have the proper SQL Server 2008 version (SQL 2008 SP1 CU5 (10.0.2746) and later), you can use this little trick to actually use an i...
How to Sync iPhone Core Data with web server, and then push to other devices? [closed]
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I suggest carefully reading and implementing the sync strategy discussed by Dan Grover at iPhone 2009 conference, available here as a pdf document.
This is a viable solution and is not that difficult to implement (Dan implemented this in several of its applications), overlapping the solution desc...
How to determine day of week by passing specific date?
...a.util.Calendar, and java.text.SimpleDateFormat are now legacy, supplanted by the java.time classes built into Java 8 & Java 9. See Tutorial by Oracle.
– Basil Bourque
Nov 3 '17 at 21:25
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Are static class instances unique to a request or a server in ASP.NET?
... application pool is recycled, and therefore everything that is referenced by the static instance, will not be GC'ed. This can lead to memory usage problems.
If you need an instance with the same lifetime as a request, I would suggest to use the HttpContext.Current.Items collection. This is by desi...
What is Normalisation (or Normalization)?
...t each cell should have only one value. We can normalize this problem away by have a separate row per car:
UserId | Car
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1 | Toyota
2 | Ford
2 | Cadillac
The problem with having several values in one cell is that it is tricky to update, tricky to query against,...
What is the largest Safe UDP Packet Size on the Internet
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It is true that a typical IPv4 header is 20 bytes, and the UDP header is 8 bytes. However it is possible to include IP options which can increase the size of the IP header to as much as 60 bytes. In addition, sometimes it is necessary for intermediate nodes to encaps...
How does Python 2 compare string and int? Why do lists compare as greater than numbers, and tuples g
...plementation detail: Objects of different types except numbers are ordered by their type names; objects of the same types that don’t support proper comparison are ordered by their address.
When you order two strings or two numeric types the ordering is done in the expected way (lexicographic ord...
Django select only rows with duplicate field values
...alues('name')
.annotate(Count('id'))
.order_by()
.filter(id__count__gt=1)
This is as close as you can get with Django. The problem is that this will return a ValuesQuerySet with only name and count. However, you can then use this to construct a regular...