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Logical Query Processing Phase1 (From)

Posted By:      Posted Date: September 14, 2010    Points: 0   Category :Sql Server
Hello All, I read this topic so many times "Logical Query Processing" , the first phase "(1) FROM The FROM phase identifi es the query’s source tables and processes table operators. Each table operator applies a series of subphases. For example, the phases involved in a join are (1-J1) Cartesian Product," http://tsql.solidq.com/books/insidetsql2008/Logical%20Query%20Processing%20Poster.pdf That's where I am confuse.. Does SQL Server engine reads all the records from table1 and table2 in memory and apply cross join and get Virtual table for us? Thanks    

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