I think this is most popular question I receive in email, if I have SQL Server cheat sheet. Well, SQL Server is very wide subject and covering all the main topics of SQL Server will take 100 pages book as cheat sheet. I have tried to create one page cheat sheet which I use for my daily use. I use this quite often and my teammates uses them as well.
You can download and print this cheat sheet and use it for your personal reference. If you have any suggestions, please let me know and I will see if I can update this SQL Server cheat sheet.
The article which discuss about SQL Server cheat sheet is SQL SERVER – Download FAQ Sheet – SQL Server in One Page.
Reference : Pinal Dave (http://blog.SQLAuthority.com)