Chat now with support

Get Live Help
Complete Registration

Sign In

Request Pricing

Contact Sales

SQL Optimizer for DB2 ZOS 5.5.1 - User Guide

Table of Contents

About SQL Optimizer Connections Connect to the Database SQL Optimization Workflow Create Support Bundles Join the SQL Optimizer Community Register SQL Optimizer Additional Resources SQL Operations

BTBSCAN CORSUB DELCUR DELETE DFETCH DIXSCAN EXCEPT EXCEPTA FETCH FFETCH FIXSCAN HBJOIN HSSCAN INLIST INSERT INTERSECT INTERSECTA IXAND IXOR IXSCAN MERGE MERGESTMT MIXSCAN MSJOIN NLJOIN PARTITION PIXSCAN PRUNED QB RETURN REPARTITION RGLIST RIDFETCH SELUPD SEMIJOIN SIXSCAN SORT SORTRID STARJOIN TBSCAN TRUNCATE UNION UNIONA UPDATE UPDCUR WFSCAN WORKFILE XIXAND XIXOR XIXSCAN

About Optimizing SQL Create Optimize SQL Sessions Open Optimizer SQL Sessions Optimize SQL Statements Specify Session Test Run Criteria Automatically Optimize SQL Statements Execution Plan

About Execution Plans Review Execution Plans Get Execution Plans Fill Missing Execution Plans Copy Execution Plans Animate Execution Plans

Generate Index Alternatives

About Generating Index Alternatives Test Run Index Alternatives Generate Index Alternatives

Test Run SQL Alternatives Retrieve Run Results Create User Defined Alternatives Set Bind Variables Review Alternatives Alternative SQL Text View Optimization Details View Schema Information View Bind Variables Show or Hide Table Attributes Show or Hide Column Attributes Compare SQL Statements Generate Optimize SQL Resolution Report Troubleshoot Optimization Results

Execution Plan Options Directory Setup Options Appearance Options

Intelligence Options Optimization Options SQL Options Quota Options

Index Generation

Index Options Intelligence Options (Index Generation)

Test Run Options Execution Method Options Order and Termination Options Best Alternative Criteria Options

Tutorial: SQL Optimizer

About us Copyright

STARJOIN

Use to perform a star join.

Star join allows you to join a dimension column of a fact table to the key column in the corresponding dimension table.

TBSCAN

Use to read every row in a table.

A table space scan construct consists of two nodes: a TBSCAN node and some type of table node such as a base table, a materialized query table, a work file, a pipe, or a table function.

TRUNCATE

Denotes TRUNCATE statement.

A TRUNCATE statement deletes all rows for either declared global temporary tables or base tables.

UNION

Combine rows from multiple tables and remove duplicate rows.

A UNION construct contains a UNION node and at least one subtree. Each subtree contains a WFSCAN node, a WORKFILE node, a SORT node, and the source query block node.

Related Documents

The document was helpful.

Select Rating

I easily found the information I needed.

Select Rating

© 2024 Quest Software Inc. ALL RIGHTS RESERVED. Feedback Terms of Use Privacy Cookie Preference Center