Hello All Consider a function: create function f(varchar(10), decimal(10,1)) returns integer as 'select 1;' language sql; I need to retreive full set of info about argument and return types (for variable length too). How I can get it from system catalog ? For tables columns I can gen an info from pg_attribute table. But in case of function no entry are present there. pg_proc has no info about length of variable length types.
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