Re: setting and using variables in PSQL ????

Gauthier, Dave <dave(dot)gauthier(at)intel(dot)com> schrieb:

>
>
> Hi:
>
> At the PSQL prompt, I want to set some variables based upon query results, or
> via static assignment, then insert a record with those values. Sort of like...

You can use this:

- define in your postgresql.conf:
custom_variable_classes = 'myvar'

- use within psql:

test=# set myvar.benutzer = 'foo';
SET
test=*# select * from foo;
id | name
----+------
1 | foo
2 | bar
(2 rows)

test=*# select * from foo where name=current_setting('myvar.benutzer');
id | name
----+------
1 | foo
(1 row)

test=*# set myvar.benutzer = 'none';
SET
test=*# select * from foo where name=current_setting('myvar.benutzer');
id | name
----+------
(0 rows)

HTH, Andreas
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