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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
isn't id better to count? since it's non nullable e usually its the primary key witch makes guaranties the index?
I'm still learn, so i'm sorry if that makes no sense
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Obsolete issue, closing
...and the language is?
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If all the people use C# instead of assembler, then programming will cease to be programming.
beautiful, of course, but if all the time using system libraries, then programming will cease to be programming.
Fixed
Generally agreed, although shouldn't a database's query analyzer be clever enough to skip selecting any column from this subquery (because it is not actually of any use)?
This is a beginner kata.
They are semantically equivalent I think.
Exactly,
SELECT 1
will run much faster thanSELECT *
Added an example to the description. Does it help?
No problem.
Could you paste your solution here so I can take a look?