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SQL Optimizer for Oracle 10.0 - User Guide

Welcome to SQL Optimizer
About SQL Optimizer SQL Optimization Workflow New in This Release Additional Resources Database Privileges Database Privileges Script Connect to the Database Windows Layout Customize Toolbars Keyboard Shortcuts Support Bundle Register SQL Optimizer Check for Updates SQL Operations
ALL PARTITION ALTER INDEX AND EQUAL ANTI JOIN BITMAP AND BITMAP COMPACTION BITMAP CONSTRUCTION BITMAP CONVERSION BITMAP INDEX BITMAP JOIN INDEX UPDATE BITMAP JOIN INDEX UPDATE STATEMENT BITMAP KEY ITERATION BITMAP MERGE BITMAP MINUS BITMAP OR BUFFER SORT CARTESIAN JOIN COLLECTION ITERATOR CONCATENATION CONNECT BY CONNECT BY PUMP COUNT COUNT STOPKEY CREATE AS SELECT CUBE SCAN DDL STATEMENT DELETE DOMAIN INDEX FAST FULL INDEX SCAN FILTER FIRST ROWS FIXED INDEX FIXED TABLE FOR UPDATE FULL INDEX SCAN FULL INDEX SCAN DESCENDING FULL INDEX SCAN (MIN/MAX) HASH GROUP BY HASH GROUP BY PIVOT HASH JOIN HASH JOIN BUFFERED HASH PARTITION HASH UNIQUE INDEX INDEX BUILD NON UNIQUE INDEX RANGE SCAN INDEX RANGE SCAN DESCENDING INDEX RANGE SCAN (MIN/MAX) INDEX SAMPLE FAST FULL SCAN INDEX SKIP SCAN INDEX SKIP SCAN DESCENDING INDEX UNIQUE SCAN INLIST ITERATOR INLIST PARTITION INSERT INTERSECTION INTO INVALID PARTITION ITERATOR PARTITION LOAD AS SELECT MAT_VIEW ACCESS MAT_VIEW REWRITE ACCESS MERGE JOIN MINUS MULTI-TABLE INSERT NESTED LOOPS OUTER JOIN PARTITION PARTITION HASH EMPTY PARTITION LIST PARTITION RANGE PROJECTION PX BLOCK ITERATOR PX COORDINATOR PX ITERATOR PX PARTITION PX PARTITION HASH ALL PX PARTITION LIST ALL PX PARTITION RANGE ALL PX RECEIVE PX SEND RANGE PARTITION RECURSIVE EXECUTION RECURSIVE WITH PUMP REFERENCE MODEL REMOTE SELECT SEMI JOIN SEQUENCE SINGLE PARTITION SINGLE RANGE PARTITION SORT SORT AGGREGATE SORT GROUP BY SORT GROUP BY CUBE SORT GROUP BY NOSORT SORT GROUP BY ROLLUP SORT JOIN SORT ORDER BY SORT UNIQUE SQL MODEL TABLE ACCESS TABLE ACCESS BY GLOBAL INDEX ROWID TABLE ACCESS BY INDEX ROWID TABLE ACCESS BY LOCAL INDEX ROWID TABLE ACCESS BY ROWID TABLE ACCESS BY USER ROWID TABLE ACCESS CLUSTER TABLE ACCESS FULL TABLE ACCESS HASH TABLE ACCESS SAMPLE TABLE QUEUE TEMP TABLE GENERATION TEMP TABLE TRANSFORMATION UNION UNION ALL UNION ALL (RECURSIVE WITH) UNPIVOT UPDATE VIEW VIEW PUSHED PREDICATE WINDOW
Optimize SQL
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WINDOW

Execution Plan image: image\QCO_WINDOW.gif

Set operation.

The WINDOW operation consists of a physical or logical set of rows used for calculating the result of an analytical function. The function is then applied to all the rows in the window. The window "slides" through the query result set or partition from top-to-bottom.

 

Operation: WINDOW

 

Option: BUFFER

The WINDOW BUFFER operation supports an analytic function.

 

Option: BUFFER PUSHED RANK

The WINDOW BUFFER PUSHED RANK operation supports an analytic function while executing the RANK function.

 

Option: NOSORT

The WINDOW NOSORT operation retrieves data without sorting for an analytic function.

 

Option: NOSORT STOPKEY

The WINDOW NOSORT STOPKEY operation retrieves data without sorting for an analytic function. Query results are limited by conditions defined by the stopkey.

 

Option: SORT

The WINDOW SORT operation sorts data for an analytic function.

 

Option: SORT PUSHED RANK

The WINDOW SORT PUSHED RANK operation sorts data before executing the RANK function for an analytic function.

 

 

Related Topics

 

Optimize SQL

Create Optimize SQL Sessions

Optimize SQL consists of SQL Rewrite sessions and Plan Control sessions. You can use SQL Rewrite sessions to optimize SQL statements by generating SQL statement or index alternatives. Use Plan Control sessions to generate execution plan alternatives for SQL statements without modifying the SQL text.

Note: This topic focuses on information that may be unfamiliar to you. It does not include all step and field descriptions.

To create a new session

  1. Select the Optimize SQL tab in the main window.

  2. Click the arrow beside and select New SQL Rewrite Session or New Plan Control Session.

    Tip: Select Switch Default Session Type to Plan Control to change the default setting for new sessions. The default setting is to create a SQL Rewrite session.

  

Related Topics  

About Optimizing SQL (SQL Rewrite)

About Optimizing SQL (Plan Control)

Connect to the Database

 

Open Optimizer SQL Sessions

This topic focuses on information that may be unfamiliar to you. It does not include all step and field descriptions.

To open a session

  1. Select the Optimize SQL tab in the main window.

  2. Click .

  3. Select a SQL Rewrite or Plan Control session to open.

    Tip: Click to import a session created in Tuning Lab 7.4 or earlier.

 

Related Topics

Create Optimize SQL Sessions

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