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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Compiling DML Statements
When SQL Server compiles an execution plan for a DML statement, it performs the following basic steps:
1. The query is parsed and checked for proper syntax, and the T-SQL statements are parsed into keywords, expressions, operators, and identifiers to generate a query tree. The query tree (sometimes referred to as the sequence tree) is an internal format of the query that SQL Server can operate on. It is essentially the logical steps needed to transform the query into the desired result.
2. The query tree is then normalized and simplified. During normalization, the tables and columns are verified, and the metadata (data types, null properties, index statistics, and so on) about them is retrieved. In addition, any views ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.