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SQL*Plus® User's Guide and Reference
Release 11.1

B31189-01
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UNDEFINE

Syntax

UNDEF[INE] variable ...

where variable represents the name of the substitution variable you want to delete.

Deletes one or more substitution variables that you defined either explicitly (with the DEFINE command) or implicitly (with an argument to the START command).

Examples

To undefine a substitution variable named POS, enter

UNDEFINE POS

To undefine two substitution variables named MYVAR1 and MYVAR2, enter

UNDEFINE MYVAR1 MYVAR2