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How to delete duplicate rows in SQL Server?
...4], [col5], [col6], [col7],
RN = ROW_NUMBER()OVER(PARTITION BY col1 ORDER BY col1)
FROM dbo.Table1
)
DELETE FROM CTE WHERE RN > 1
DEMO (result is different; I assume that it's due to a typo on your part)
COL1 COL2 COL3 COL4 COL5 COL6 COL7
john 1 1 1...
Repository Pattern vs DAL
...cts are grouped into aggregates, each with an aggregate root. E.g. PurchaseOrder is an aggregate root and OrderItems are children within the aggregate root. A repository only deals with aggregate roots. That is, a OrderItem for example is never loaded independently of it's aggreate root. So, you wou...
What is the difference between atomic and critical in OpenMP?
...d. We are referring to those cases that synchronization is necessary.
In order to synchronize the threads in a multi-threaded program, we'll use lock. When the access is required to be restricted by only one thread at a time, locks come into play. The lock concept implementation may vary from proc...
Circle drawing with SVG's arc path
...utely specifies where the start point of all shapes is. It has to do so in order for dash arrays to work on shapes.
– Paul LeBeau
Jan 17 '17 at 3:50
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What is the best way to get all the divisors of a number?
...s about killing performance. Problem two: the divisors are not returned in order.
– Tomasz Gandor
Dec 10 '14 at 14:37
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Exception.Message vs Exception.ToString()
...e scenarios. It also writes out the properties of the exceptions in a nice order. It's using C# 7 but should be very easy for you to convert to older versions if necessary. See also this related answer.
public static class ExceptionExtensions
{
public static string ToDetailedString(this Excepti...
How do I detach objects in Entity Framework Code First?
...ed object of a type which is part of your model classes (Person, Customer, Order, etc.). You cannot directly pass in an IQueryable<T> into dbContext.Entry(...). Is that the question you meant?
– Slauma
Apr 8 '11 at 19:37
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The current branch is not configured for pull No value for key branch.master.merge found in configur
...ranch. I haven't found a way in that case not to do the manual editing in order to git pull, even with command line git.
After the edit is saved, right click on the git repo in your egit "Git Repositories" perspective, and choose properties, you will now see this section of keys has been created...
C# Object Pooling Pattern implementation
...ches, but the bottom line is that resources should be accessed in the same order that they were created, which means that we have to maintain references to them but mark them as "in use" (or not). In the worst-case scenario, only one slot is ever available, and it takes a full iteration of the buff...
Accessing a Dictionary.Keys Key through a numeric index
...t = mydict.Keys.ElementAt(mydict.Count -1);
You should not depend on the order of keys in a Dictionary. If you need ordering, you should use an OrderedDictionary, as suggested in this answer. The other answers on this page are interesting as well.
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