Functions possibly returning more than one row. Typical examples are series generating functions or unnest(). A.k.a. "table-functions".

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How can I replace the cursor in the below query?

I have this below query which calls a stored procedure that takes only 1 item's attributes at a time. But because of performance problems we are required to remove the cursor. How can I replace the ...
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Call function where argument is a (sub)select statement

My function takes an int4 as argument and returns a table: SELECT * FROM test_function(545421); -- works fine SELECT * FROM test_function(SELECT customerid FROM tableX ...
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Filling in missing dates in record set from generate_series()

Consider: with days as (select day::date from generate_series(date '2013-01-01', date '2013-01-01' + 365, interval '1 day' day) day ) select 'Inspections'::text as data_label, count(i.reporting_id) ...
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Function execute query, manipulates result and then return the same result

I need a function that does something like this pseudocode: function get_data() RETURN SET OF something... as BEGIN myResultSet = select id, some_other_column from ...... limit 20000; update ...
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Unnest multiple arrays into rows

I have been shown a great way to bulkinsert with this example: WITH p AS ( INSERT INTO parent_table (column_1) SELECT $1 RETURNING id) INSERT INTO child_table (parent_table_id, ...
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RETURN NEXT in Postgres Function

I'm currently writing a plpgsql function that will select from a table and produce a substantial amount of data. I was originally going to return an array, but I found a resource that explains the ...
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PostgreSQL stored procedure to return rows or empty set

I have a stored procedure, which RETURNS SETOF ct_custom_type and inside I do RETURN QUERY EXECUTE 'some dynamic query' And I want to do this: If this 'dynamic query' returns >= 10 rows, I want to ...
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Error: set_valued function called in context that cannot accept a set. What is it about?

I use Postgresql 9.1, with ubuntu 12.04. Inspired by Craig's answer to my question Concatenation of setof type or setof record I thought I would go well with using return query, setof record, and a ...
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Concatenation of setof type or setof record

I use Postgresql 9.1 with Ubuntu 12.04. In a plpgsql function I try to concatenate setof type returned from another function. the type pair_id_value in question is created with create type ...
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returning set of records in stored procedure

I would like to return a set of records from a pl/pgsql. Is there a way to do that without using the "for" construct and cursors? For instance when I compared these two stored procedures: create or ...