Re: How to pass table column values to function - Mailing list pgsql-general

From Marcos Pegoraro
Subject Re: How to pass table column values to function
Date
Msg-id CAB-JLwZM-+AiVoK7_U3NVwLr3Ois+Mgw4yMGFw4-vvwp011_iQ@mail.gmail.com
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In response to How to pass table column values to function  (Andrus <kobruleht2@hot.ee>)
List pgsql-general


Em sáb., 11 de fev. de 2023 às 07:10, Andrus <kobruleht2@hot.ee> escreveu:

Hi!

Table source contains integer column. Its values should be passed to function for selecting data from other table.

I tried

        CREATE OR REPLACE FUNCTION public.TestAddAssetTransactions(dokumnrs int[])
         RETURNS int AS
        $BODY$
        
        with i1 as (
        INSERT INTO bilkaib (dokumnr)
        select dokumnr  from dok where dokumnr in (select * from unnest(dokumnrs))
        returning *
        )
        
        select count(*) from i1;
        $BODY$ language sql;
        
        create temp table bilkaib (dokumnr int ) on commit drop;
        create temp table dok (dokumnr serial primary key ) on commit drop;
        create temp table source (dokumnr int ) on commit drop;
        insert into source values (1),(2);
    
    select TestAddAssetTransactions( (select ARRAY[dokumnr] from source)::int[] )

 
but got error

> ERROR: more than one row returned by a subquery used as an expression

Probably you want an array_agg and not an array
select TestAddAssetTransactions( (select array_agg(dokumnr) from source) ) 

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