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SQL Optimizer for DB2 LUW 4.4.2 - User Guide

SQL Optimizer for IBM® DB2® LUW
UsageStatistics Getting Started Options SQL Scanner SQL Optimizer SQL Formatter SQL Inspector Database Explorer SQL Repository Index Impact Analyzer Index Usage Analyzer User-Defined Temp Table Editor Functions SQL Functions SQL Information and Functions Activity Log
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Search Functions

Quest SQL Optimizer for IBM® DB2® LUW maximizes SQL performance by automating the manual, time-intensive and uncertain process of ensuring that SQL statements are performing as fast as possible. SQL Optimizer analyzes, rewrites, and evaluates SQL statements within multiple database objects, files, or SQL statements captured by the DB2 Event Monitor. With SQL Optimizer, you can analyze and optimize all your problem SQL from multiple sources. SQL Optimizer also provides you a complete index optimization and plan change analysis solution, from index recommendations to simulated index impact analysis, through comparison of multiple SQL access plans.

SQL Optimizer provides you with the following main modules.

SQL Optimizer (including SQL Rewrite and Generate Indexes functions)

SQL Formatter

Database Explorer

SQL Scanner

SQL Inspector

SQL Repository

Index Impact Analyzer

Index Usage Analyzer


Search Functions

The Search functions search through the current text pane to find the text search string. This applies to text pane that are editable with a white background (Windows default color) and the panes that are read only with a gray background (Windows default color).

These functions are available from the Search menu:

Quick Find


Find Next


Goto Line

For windows that have multiple tabs in the text pane, use the Find option on the SQL menu to search though all the tabs for the text search string.



The Find search function brings up the Find Text window where you can select the search criteria.

To search for text the currently displayed SQL statement

  1. Select Search | Find [Ctrl + F].

  2. Enter the search string.  

The search is refined in the Find Text window using the following settings:


Search Option


Case sensitive

Searches for the text in exact case that you enter it.

Whole word only

Searches for words only, or in other words, searches for a text string that is preceded and followed by a space or punctuation mark.

Regular expression

Specify whether to recognize regular expressions in the search string.


Scope Options



Searches the entire text pane.

Selected text

Searches only the highlighted text.


Direction Options



Searches from the cursor to the end of the text pane.


Searches from the cursor to the top of the text pane.


Origin Options


From cursor

Searches from the cursor either forward or backward depending on the Direction setting.

Entire scope

Searches the entire text pane. If the Direction setting is forward, it starts at the top of the pane. If the Direction setting is backward, it starts at the bottom of the pane.


Quick Find

The Quick Find search function searches the currently displayed SQL statement for the next occurrence of the text that you have highlighted in the SQL statement. If it finds this text, it moves the line containing the search string to the top of the text pane.

To find the currently highlighted text

With text highlighted in the active window, select Search | Quick Find [CRTL + ALT + F].


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