Обсуждение: Usage of RETURN QUERY

Hello,

I'm trying to use RETURN QUERY in a function (see query below) in order to
return list of issues and number of times when each issue occurred.

When I try to run the query, it outputs:

ERROR:  syntax error at or near "RETURN"
LINE 5: RETURN QUERY SELECT COUNT(tbl_rpc_data.data) AS count, tbl_r...
        ^
********** Error **********

ERROR: syntax error at or near "RETURN"
SQL state: 42601

I also tried running RETURN QUERY EXECUTE '...' USING ... -- the same
result.

I'm using 'PostgreSQL 9.0.1, compiled by Visual C++ build 1500, 64-bit    ' on
64-bit Windows 7 Ultimate.


The text of the query:

--DROP FUNCTION dbglogs_golden.get_grouped_issues_by_agents(integer[]);

CREATE OR REPLACE FUNCTION
dbglogs_golden.get_grouped_issues_by_agents(_p_agent_ids integer[])
  RETURNS TABLE(_count integer, _desc text) AS $$

RETURN QUERY SELECT COUNT(tbl_rpc_data.data) AS count, tbl_rpc_data.data
FROM dbglogs_golden.tbl_rpc_messages, dbglogs_debug.tbl_severity_levels,
dbglogs_golden.tbl_rpc_data, dbglogs_product_agent.tbl_product_agents
WHERE tbl_severity_levels.severity_level_id =
tbl_rpc_messages.severity_level_id AND
      tbl_rpc_data.data_id = tbl_rpc_messages.data_id AND
      tbl_product_agents.product_agent_id =
tbl_rpc_messages.product_agent_id AND
      tbl_rpc_messages.product_agent_id = ANY(_p_agent_ids) AND
      tbl_severity_levels.severity_level_id IN (1, 2, 4, 5)
GROUP BY tbl_rpc_data.data
ORDER BY count DESC;

END;

$$ LANGUAGE 'plpgsql';
ALTER FUNCTION dbglogs_golden.get_grouped_issues_by_agents(integer[]) OWNER
TO ed;

"Eugene Dorofeyev" <edorofeyev@gmail.com> writes:
> I'm trying to use RETURN QUERY in a function (see query below) in order to
> return list of issues and number of times when each issue occurred.

It looks like your problem is you forgot a BEGIN.

> CREATE OR REPLACE FUNCTION
> dbglogs_golden.get_grouped_issues_by_agents(_p_agent_ids integer[])
>   RETURNS TABLE(_count integer, _desc text) AS $$

> RETURN QUERY SELECT COUNT(tbl_rpc_data.data) AS count, tbl_rpc_data.data
> FROM dbglogs_golden.tbl_rpc_messages, dbglogs_debug.tbl_severity_levels,
> dbglogs_golden.tbl_rpc_data, dbglogs_product_agent.tbl_product_agents
> WHERE tbl_severity_levels.severity_level_id =
> tbl_rpc_messages.severity_level_id AND
>       tbl_rpc_data.data_id = tbl_rpc_messages.data_id AND
>       tbl_product_agents.product_agent_id =
> tbl_rpc_messages.product_agent_id AND
>       tbl_rpc_messages.product_agent_id = ANY(_p_agent_ids) AND
>       tbl_severity_levels.severity_level_id IN (1, 2, 4, 5)
> GROUP BY tbl_rpc_data.data
> ORDER BY count DESC;

> END;

> $$ LANGUAGE 'plpgsql';

            regards, tom lane

Damn, I really need to buy a new glasses.

Thank you for your help.

But it returns data as a set of rows like

(10354,"EXCEPTION: ...")
(4363,"Access Violation Exception.")
...


Is there a way to get columns as in a view ?

-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Wednesday, December 08, 2010 4:53 PM
To: edorofeyev@gmail.com
Cc: pgsql-novice@postgresql.org
Subject: Re: [NOVICE] Usage of RETURN QUERY

"Eugene Dorofeyev" <edorofeyev@gmail.com> writes:
> I'm trying to use RETURN QUERY in a function (see query below) in
> order to return list of issues and number of times when each issue
occurred.

It looks like your problem is you forgot a BEGIN.

"Eugene Dorofeyev" <edorofeyev@gmail.com> writes:
> But it returns data as a set of rows like

> (10354,"EXCEPTION: ...")
> (4363,"Access Violation Exception.")

> Is there a way to get columns as in a view ?

Try "SELECT * FROM func(...)" rather than just "SELECT func(...)".

            regards, tom lane

Yes, 'SELECT * FROM' works fine


-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Wednesday, December 08, 2010 5:38 PM
To: edorofeyev@gmail.com
Cc: pgsql-novice@postgresql.org
Subject: Re: [NOVICE] Usage of RETURN QUERY

"Eugene Dorofeyev" <edorofeyev@gmail.com> writes:
> But it returns data as a set of rows like

> (10354,"EXCEPTION: ...")
> (4363,"Access Violation Exception.")

> Is there a way to get columns as in a view ?

Try "SELECT * FROM func(...)" rather than just "SELECT func(...)".

            regards, tom lane