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Linq to Entities join vs groupjoin

I have web searched but I still cant find a simple answer. Can someone please explain (in simple English) what a GroupJoin is? How is it different from a regular inner Join ? Is it commonly used? Is it only for method syntax? What about query syntax? A c# code example would be nice. ...
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What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?

What's the difference between 5 Answers 5 ...
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How do I execute inserts and updates in an Alembic upgrade script?

I need to alter data during an Alembic upgrade. 3 Answers 3 ...
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Which is generally best to use — StringComparison.OrdinalIgnoreCase or StringComparison.InvariantCul

I have some code like this: 5 Answers 5 ...
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How to keep Maven profiles which are activeByDefault active even if another profile gets activated?

I have a profile in my pom.xml which should be always active unless it is explicitely deactivated (-P !firstProfile). I solved this by using the activeByDefault flag: ...
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How to create a new branch from a tag?

I'd like to create a new master branch from an existing tag. Say I have a tag v1.0 . How to create a new branch from this tag? ...
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How can you diff two pipelines in Bash?

How can you diff two pipelines without using temporary files in Bash? Say you have two command pipelines: 3 Answers ...
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Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?

The section "Avoid Enums Where You Only Need Ints" was removed from the official developer documentation . (See Why doesn't Android use more enums? for the old section content) ...
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How to get error information when HttpWebRequest.GetResponse() fails

I am initiating an HttpWebRequest and then retrieving it's response. Occasionally, I get a 500 (or at least 5##) error, but no description. I have control over both endpoints and would like the receiving end to get a little bit more information. For example, I would like to pass the exception mes...
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Validating an XML against referenced XSD in C#

I have an XML file with a specified schema location such as this: 5 Answers 5 ...