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SQL Server IIF vs CASE

I recently came to know about the availability of IIF function in SQL Server 2012. I always use nested CASE in my queries. I want to know the exact purpose of the IIF statement and when should we prefer using IIF over CASE Statement in the query. I mostly use nested CASE in my queries. ...
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Gitignore not working

My .gitignore file isn't working for some reason, and no amount of Googling has been able to fix it. Here is what I have: ...
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Database Design for Tagging

How would you design a database to support the following tagging features: 12 Answers ...
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Postgres: INSERT if does not exist already

I'm using Python to write to a postgres database: 17 Answers 17 ...
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How to prevent the activity from loading twice on pressing the button

I am trying to prevent the activity from loading twice if I press the button twice instantly after the first click. 19 Answ...
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Can I use CASE statement in a JOIN condition?

The following image is a part of Microsoft SQL Server 2008 R2 System Views. From the image we can see that the relationship between sys.partitions and sys.allocation_units depends on the value of sys.allocation_units.type . So to join them together I would write something similar to this: ...
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ASP.NET MVC Ajax Error handling

How do I handle exceptions thrown in a controller when jquery ajax calls an action? 6 Answers ...
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How to configure Ruby on Rails with no database?

It would be convenient to use Ruby on Rails for a small website project that has no current need for a database. I know I could create an empty database in MySQL and go from there, but does anyone know a better way to run Rails without a database? ...
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What is the difference between std::array and std::vector? When do you use one over other? [duplicat

What is the difference between std::array and std::vector ? When do you use one over other? 6 Answers ...
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What's the syntax for mod in java

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