All about select & join & project & dividedly in SQL Server?

Question

I mean I want to learn about these relational algebra in SQL server comprehensively so I need a few websites related to them.

Joe Wilson · Answer

Thank you for your answer. but the webpage you have suggested was unavailable  and w3 school courses are good but I need something others related to subject please something more.

Nanhe Siddique · Answer

watch this video www.youtube.com/watch?v=FTrqsCWKfrw and read following links https://mivuletech.wordpress.com/2011/03/22/an-overview-of-relational-algebra-operators-and-their-sql-translations/ http://www.w3schools.com/sql/default.asp