SQL*Plus User's Guide and Reference Release 8.1.6 A75664-01 |
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Command Reference, 49 of 52
Deletes one or more user variables that you defined either explicitly (with the DEFINE command) or implicitly (with an argument to the START command).
UNDEF[INE] variable ...
Refer to the following for a description of the term or clause:
To undefine a user variable named POS, enter
SQL> UNDEFINE POS
To undefine two user variables named MYVAR1 and MYVAR2, enter
SQL> UNDEFINE MYVAR1 MYVAR2
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