SQL Plus - Argument

1 - About

The arguments of a script become become substitution variable:

  • &1 for the first one,
  • &2 for the second one,
  • etc ….

SQL*PLUS doesn't have any flow control (IF statement), you have to do them in SQL or PL/SQL.

3 - Initialization

If no argument has been given, you can still initialize them with this snippet:


column 1 new_value 1
column 2 new_value 2

set termout off
select null as "1"
,      null as "2"
from   dual 
where  1=2;
set termout on

PROMPT The value for the first argument is: &1
PROMPT The value for the second argument is: &2

DEFINE 1
DEFINE 2

UNDEFINE 1
UNDEFINE 2

Example:


@myScript  1 


The value for the first argument is: 1
DEFINE 1               = "1" (CHAR)
The value for the second argument is:
DEFINE 2               = "" (CHAR)

The variable 2 is NULL and can be tested with the function NVL.

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