Re: Selecting values from comma separated string

In response to Nacef LABIDI :
> Hi all,
> 
> I want to write a function that takes as param a comma separated values string
> and perform a select matching these values.
> 
> Here is the string '1,3,7,8'
> 
> And I wan to perform a : SELECT * FROM my_table WHERE id IN (1, 3, 7, 8);

Use EXECUTE sql_string, see
http://www.postgresql.org/docs/8.4/interactive/plpgsql-control-structures.html

For instance, simple example, untested:

create function foo (my_string) returns setof record as $$
declare sql text;
begin sql:='SELECT * FROM my_table WHERE id IN (' || $1 || ')'; return query execute sql;
end;

The variable sql contains the whole query, and then execute that.

HTH, Andreas
-- 
Andreas Kretschmer
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