March 1999
Intermediate to advanced
528 pages
14h 39m
English
Content preview from Oracle SQL*Plus: The Definitive GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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The SET Command
SQL*Plus contains a large number of internal variables that control various aspects of the way the product operates. The SET command is used to change these settings to suit your preferences. The number of settings is quite large, so for convenience I’ve divided them into the following categories:
Report output and format settings
Feedback settings
Input settings
Operational settings
Substitution variable settings
Large object settings
Tuning and timing settings
Database administration settings
Miscellaneous settings
The following sections describe the settings available in each of these categories.
Report Output and Format Settings
The largest group of SQL*Plus settings exists to control the way data is formatted, displayed, and output for a report. These settings control such things as the number of lines on a page, the line length, whether or not tab characters are used to format the output, and so forth. The following list briefly describes each of these settings:
- COLSEP
Controls the text used to separate columns of data.
- EMBEDDED
Turns the embedded report feature on or off.
- HEADSEP
Controls the character used to mark a line break in a column heading.
- HEADING
Controls whether or not column headings are displayed when selecting data.
- LINESIZE
Specifies the maximum line width.
- MAXDATA
The maximum row length SQL*Plus can handle.
- NEWPAGE
Controls what SQL*Plus prints when advancing to a new page.
- NULL
Contains the text SQL*Plus displays for any null values returned by a query. ...
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