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SQL Data Reader - handling Null column values
I'm using a SQLdatareader to build POCOs from a database. The code works except when it encounters a null value in the database. For example, if the FirstName column in the database contains a null value, an exception is thrown.
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Best approach to remove time part of datetime in SQL Server
...a function or CAST to a column invalidates index usage. See number 2 here: http://www.simple-talk.com/sql/t-sql-programming/ten-common-sql-programming-mistakes/
Now, this does have an example of later SQL Server optimiser versions managing CAST to date correctly, but generally it will be a bad idea...
Difference between size_t and std::size_t
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What is the best way to filter a Java Collection?
I want to filter a java.util.Collection based on a predicate.
27 Answers
27
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Circle line-segment collision detection algorithm?
I have a line from A to B and a circle positioned at C with the radius R.
27 Answers
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How do I generate random number for each row in a TSQL Select?
...HECKSUM(NEWID())) * 10 as INT) + 1
Transact-SQL Documentation:
CAST(): https://docs.microsoft.com/en-us/sql/t-sql/functions/cast-and-convert-transact-sql
RAND(): http://msdn.microsoft.com/en-us/library/ms177610.aspx
CHECKSUM(): http://msdn.microsoft.com/en-us/library/ms189788.aspx
NEWID(): https...
How can I parse JSON with C#?
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If .NET 4 is available to you, check out: http://visitmix.com/writings/the-rise-of-json (archive.org)
Here is a snippet from that site:
WebClient webClient = new WebClient();
dynamic result = JsonValue.Parse(webClient.DownloadString("https://api.foursquare.com/v2/u...
Difference between Repository and Service Layer?
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Comparing two collections for equality irrespective of the order of items in them
I would like to compare two collections (in C#), but I'm not sure of the best way to implement this efficiently.
19 Answers...
“Comparison method violates its general contract!”
Can someone explain me in simple terms, why does this code throw an exception, "Comparison method violates its general contract!", and how do I fix it?
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