Patrick TJ McPhee wrote:
I'm not sure a static variable is the right way to achieve this, but
you could use a custom_variable_class for this. Add this to your
postgresql.conf:
custom_variable_classes='global'
Then you can set and show variables prefixed by global.:
set global.success = 'true';
This is very intriguing, but I'd like to make sure it is doing what I
think it is doing. Is it tracking variables in a connection across SQL
commands? If so, shouldn't this work (Assume the existence of table
"detail" with a column called "val2").
create or replace function SetVal2() returns void as
$$
begin
update detail set val2=global.val2;
end;
$$
language plpgsql
set global.val2=5;
select SetVal2();
I'm getting the following error which I don't understand. Seems I don't
know how to access the variable once it is set.
ERROR: missing FROM-clause entry for table "global"
CONTEXT: SQL statement "update detail set val2=global.val2"
PL/pgSQL function "setval2" line 2 at SQL statement
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