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How to create composite primary key in SQL Server 2008
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Right Click on the Table you wish to create the composite key on and select Design.
Highlight the columns you wish to form as a composite key
Right Click over those columns and Set Primary Key
To see the SQL you can then right click on the Table > Script Table As > Create To
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Extreme wait-time when taking a SQL Server database offline
...s statistic update)
To find connections, use sys.sysprocesses
USE master
SELECT * FROM sys.sysprocesses WHERE dbid = DB_ID('MyDB')
To force disconnections, use ROLLBACK IMMEDIATE
USE master
ALTER DATABASE MyDB SET SINGLE_USER WITH ROLLBACK IMMEDIATE
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How to force uninstallation of windows service
... and services window if opened, then start cmd again by right clicking and selecting run as administrator. If sc delete sericeName does not work or anything does not work.
http://weblogs.asp.net/avnerk/archive/2007/09/05/windows-services-services-msc-and-the-quot-this-service-is-marked-for-deletion...
REST API 404: Bad URI, or Missing Resource?
...s no data which align to the query conditions (for example zero record was selected).
When there was no data to sent back to the client I prepared an perfect JSON message with internal error code, etc. to inform the client about the reason of the "Not Found" and it was sent back to the client with ...
How can I open a link in a new window?
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No need of using jQuery selector in the click handler so line $(this).attr('target', '_blank'); could be changed to this.target = "_blank"; Also, if the anchor links on the page can be modified to have rel="external" attributes then you could creat...
What is the advantage to using bloom filters?
...riefly tell the basics.
you initiate an empty bit array of length m
you select k different hash functions (the more independent the better)
if you want to add element, you calculate all the k hashes of this value and set the corresponding bits to 1
if you want to check if element exist, you also ...
Storing JSON in database vs. having a new column for each key
..._food pizza
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and query via something like this:
select meta_val from `table` where meta_key = 'name' and uid = 1 order by meta_id desc
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Difference between shared objects (.so), static libraries (.a), and DLL's (.so)?
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FYI: g++ has __attribute__ syntax for selectively 'export' symbols: #define DLLEXPORT __attribute__ ((visibility("default"))) #define DLLLOCAL __attribute__ ((visibility("hidden")))
– Brian Cannard
Jul 10 '14 at 14:49
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What is the difference between object keys with quotes and without quotes?
...the conflict between the method size and the attribute size is resolved by selecting the method. There are cases in jQuery where passing a Value as a string or another type causes a change in behavior, but never from defining a property with a valid property name in quotes vs not in quotes.
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Difference between sh and bash
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Some Bash keywords like local, source, function, shopt, let, declare, and select are not portable to sh. (Some sh implementations support e.g. local.)
Bash has many C-style syntax extensions like the three-argument for((i=0;i<=3;i++)) loop, += increment assignment, etc. The $'string\nwith\tC\aes...