June 2015
Intermediate to advanced
1800 pages
70h 6m
English
book
Microsoft SQL Server 2014 Unleashed
by Ray Rankins, Paul Bertucci, Chris Gallelli, Alex T. Silverstein
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Determining the Optimal Join Order
In addition to determining the best join strategies, the Query Optimizer also evaluates and determines the optimal join order that would result in the most efficient query plan. In the query’s execution plan, you might find that the order of the tables in the execution plan is a different order than specified in the query. Regardless of the join strategy used, the Query Optimizer needs to determine which table is the outer input and which is the inner input to the join strategy chosen. For example, consider the following query:
select soh.SalesOrderID, OrderDate, Status, ProductNumber, ListPrice from Sales.SalesOrderHeader soh join Sales.SalesOrderDetail sod on soh.SalesOrderID ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.