大约有 20,000 项符合查询结果（耗时：0.0358秒） [XML]
Delete duplicate records in SQL Server?
...
You can do this with window functions. It will order the dupes by empId, and delete all but the first one.
delete x from (
select *, rn=row_number() over (partition by EmployeeName order by empId)
from Employee
) x
where rn > 1;
Run it as a select to see what w...
abort, terminate or exit?
...t successfully exits the
application, and calls atexit()
functions in LIFO order. I don't
normally see this in C++
applications, however, I do see it in
many unix based applications where it
sends an exit code at the end.
Usually a exit(0) indicates a
successful run of the application.
...
Comparing two collections for equality irrespective of the order of items in them
...valent if they
have the same elements in the same
quantity, but in any order. Elements
are equal if their values are equal,
not if they refer to the same object.
Using reflector, I modified the code behind AreEquivalent() to create a corresponding equality comparer. It is more complete tha...
How to use MDC with thread pools?
...ns, the newTaskFor methods for Runnable and Callable can be overwritten in order to wrap the argument (see accepted solution) when creating the RunnableFuture.
Note: Consequently, the executorService's submit method must be called instead of the execute method.
For the ScheduledThreadPoolExecutor...
How do I strip non alphanumeric characters from a string and keep spaces?
...
In this case I would use the bang method (gsub! instead of gsub) in order to clean the input permanently.
#permanently filter all non-alphanumeric characters, except _
@search_query.gsub!(/\W/,'')
This avoids a situation where @seach_query is used elsewhere in the code without cleaning it...
Should I index a bit field in SQL Server?
...eping track of "IsProcessed"), then an index would be good because it will order them by value and then be able to select the small working set very quickly. If you agree, add that and I will accept it.
– jeremcc
Oct 23 '08 at 21:01
...
The type 'string' must be a non-nullable type in order to use it as parameter T in the generic type
Why do I get Error "The type 'string' must be a non-nullable value type in order to use it as parameter 'T' in the generic type or method 'System.Nullable'"?
...
使用 XML 和 Web 服务 · App Inventor 2 中文网
...r (hello, everybody). The pairs in a decoding are listed in alphabetical order by tag, regardless of their order in the original input sequence. Each pair consists of the tag, together with the decoding of the data delimited by that tag. As this example shows, if the items delimited by the tag ...
Terminating a script in PowerShell
...ions to throw to a wrapping try-catch and exit from that wrapping catch in order to actually output an error exit code.
– Josh
Mar 16 '16 at 14:37
2
...
Where is the “Fold” LINQ Extension Method?
...gregate" outside of SQL. WP has a list en.wikipedia.org/wiki/Fold_(higher-order_function) of a couple dozen languages and C# is the only one that calls it "Aggregate". "Reduce" is the clear winner, followed by "Fold" for the ML family, and "Inject" for Smalltalk and friends.
–...