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RDBMS - Sql Processing (Engine) 27 pages

(Access|Scan) (Paths|Method)
(Query Plan) Cost
Execution
Data Access Path - Full Table Scan
Query Optimizer Goal
Hard Parse (Library cache miss)
Logical Plan (Query)
Relational Operator (Data operations|Execution Plan Steps)
Query Optimizer (Query Optimization)
SQL Parser
How to read a physical plan (Execution Plan | Execution Tree)
(Physical|Execution) Plan
Plan
How to read a query plan ?
Query Plan
Query Rewrite
The Query Transformer
Result Set
Row Operation
Row Set
Row source generator
(Set|Set-based) Operation
Soft parse (Library cache hit)
SQL processing (Sql Compiler)
Optimizer Statistics
Query Plan (Step|Operation)
SQL Tree

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Sql Engine - Query Plan (Step|Operation)

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About

A query plan step is essentially an relational operator with its arguments.

Articles Related

SQL Engine - (Set|Set-based) Operation
Sql Engine - Row Operation
SQL Engine - How to read a query plan ?

Goal

A operation may be:

a row operation
a set operation
or both

Discover More

SQL Engine - (Set|Set-based) Operation

An Operation that implements a mathematics set function. A set operation does not return records to the next operation until all of the rows have been processed in contrast to row operation, returning...

SQL Engine - How to read a query plan ?

How to read a query plan (ie a execution tree) ? Each row in the output table corresponds to a single step in the execution plan. The first step is the furthest indented to the right. As it's...

Sql Engine - Row Operation

A row operation returns the first records to the next operation quickly. NESTED LOOPS

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