Re: Using a function in different schemas

On 08/31/2011 08:38 AM, Juan Manuel Alvarez wrote:
> Hello everyone! This is the first time I post on this list. Until now,
> I was able to get a solution to all the problems I had, but now I am
> facing an issue I can't resolve, so I hope you can help me.
>
> The problem goes like this: I am using the same distribution of
> tables/functions into different schemas, so I have the following
> layout
> - "schema1" has tables "myTable1" and "myTable2", and function "myFunction"
> - "schema2" has tables "myTable1" and "myTable2", and function "myFunction"
>
> Until now I used the full names to distinguish between schemas, like
> this: schema1.myTable1 and schema2.myTable1.
> But now I have to add an update trigger in both "myTable1" that calls
> to a function that makes a select statement on "myTable2".
> The problem is that even if the trigger is inside "mySchema1", it
> can't find "myTable2" and I don't know how to get the schema that the
> function is into.
>
> Things I have tried so far:
> - current_schema() but, according to the documentation, it "returns
> the name of the schema that is first in the search path" and that is
> neither "mySchema1" or "mySchema2".
> - Passing a parameter to the trigger: since it is an update trigger I
> haven't found a way to pass parameter to it.
>
> Can anyone please point me in the right direction?

Assuming using plpgsql look here:
http://www.postgresql.org/docs/9.0/interactive/plpgsql-trigger.html

In particular:

"
TG_TABLE_SCHEMA

Data type name; the name of the schema of the table that caused the
trigger invocation.
"

>
> Thanks in advance!
> Juan M.
>

--
Adrian Klaver
adrian(dot)klaver(at)gmail(dot)com