Learning to write SQL queries

I want to learn SQL to be able to write queries.  I want to be able to datamine, join tables, etc...Does anyone have a recommeded website or continuing education class that you would recommend?
gloyola1Asked:
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klittlejohn1Connect With a Mentor Commented:
Here is a site that I use and it has helped me a lot.

http://www.sqlservercentral.com/
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SharathConnect With a Mentor Data EngineerCommented:
You can start from here if you are looking for basics. http://www.w3schools.com/sql/default.asp
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PeteEngineerConnect With a Mentor Commented:
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klittlejohn1Commented:
I forgot all about that one Sharath. I have used that one too and it is a good site.
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PeteEngineerConnect With a Mentor Commented:
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PeteEngineerConnect With a Mentor Commented:
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PeteEngineerConnect With a Mentor Commented:
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jimyXConnect With a Mentor Commented:
Very good web sites above there, in addition, let's not forget some good books.
You can google "learn SQL Queries" under books and you will get many to read on line.
You may have a look on this one:

http://books.google.com/books?id=uXsi_0_vSrAC&pg=PA1&dq=learn+sql+queries&hl=en&ei=7AxvTaeeGse9tger_pjzDg&sa=X&oi=book_result&ct=result&resnum=3&ved=0CDUQ6AEwAg#v=onepage&q=learn%20sql%20queries&f=false
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sarabhaiCommented:
ok.

lets start with W3school site, this is basic fundamentals.


after that msdn is the original source so msdn help tells every thing.

and be hand on the Relational Algebra for query writing.
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