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Select n random rows from SQL Server table
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select top 10 percent * from [yourtable] order by newid()
In response to the "pure trash" comment concerning large tables: you could do it like this to improve performance.
select * from [yourtable] where [yourPk] in
(select top 10 percent [yourPk] from [yourtable] o...
type object 'datetime.datetime' has no attribute 'datetime'
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I run into the same error maybe you have already imported the module by using only import datetime so change form datetime import datetime to only import datetime. It worked for me after I changed it back.
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How to force a SQL Server 2008 database to go Offline
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@radbyx: MSDN says to use master when operating DB's state
– abatishchev
Jun 10 '10 at 15:36
17
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Capture Stored Procedure print output in .NET
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You can do this by adding an event handler to the InfoMessage event on the connection.
myConnection.InfoMessage += new SqlInfoMessageEventHandler(myConnection_InfoMessage);
void myConnection_InfoMessage(object sender, SqlInfoMessageEventA...
Changing the case of a string in Eclipse
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By default, the hotkeys:
CTRL+SHIFT+Y changes to lowercase.
CTRL+SHIFT+X changes to UPPERCASE.
Or, on a Mac:
⌘+⇧+Y changes to lowercase.
⌘+⇧+X changes to UPPERCASE.
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What does dot (.) mean in a struct initializer?
...This is a C99 feature that allows you to set specific fields of the struct by name in an initializer. Before this, the initializer needed to contain just the values, for all fields, in order -- which still works, of course.
So for the following struct:
struct demo_s {
int first;
int s...
Is there a way to give a specific file name when saving a file via cURL?
...tion or its alias --output, or redirect shell output to the file of choice by using >.
curl -o /path/to/local/file http://url.com
curl http://url.com > /path/to/local/file
If you want to preserve the original file name from the remote server, use the -O option or its alias --remote-name.
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NodeJS / Express: what is “app.use”?
...dd onto your Express middleware stack. Middleware layers can be added one by one in multiple invocations of use, or even all at once in series with one invocation.
See use documentation for more details.
To give an example for conceptual understanding of Express Middleware, here is what my app mid...
Is there an alternative sleep function in C to milliseconds?
... (at least) usec microseconds. The sleep may be lengthened slightly by
any system activity or by the time spent processing the call or by the
granularity of system timers.
usleep() takes microseconds, so you will have to multiply the input by 1000 in order to sleep in mill...
How do I inspect the view hierarchy in iOS?
...parent. Currently I have to add asserts that test these various conditions by hand, or set different background colours on different views, and as you can imagine, that's a really tedious way to go about it.
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