PostgreSQL错误:SELECT ... INTO的EXECUTE未实现

Question

当我从我定义的函数运行以下命令时,我收到错误"SELECT ... INTO的EXECUTE未实现".这是否意味着不允许特定命令(即"SELECT ... INTO")？或者它只是意味着我做错了什么？导致错误的实际代码如下.如果答案已经在这里,我道歉,但是我看起来并且找不到这个特定的错误.在此先感谢...无论如何,我都在运行8.4.7

 vCommand = 'select ' || stmt.column_name || ' as id ' ||
            ', count(*) as nCount
            INTO tmpResults
            from ' || stmt.table_name || '
            WHERE ' || stmt.column_name || ' IN (select distinct primary_id from anyTable
                                                WHERE primary_id = ' || stmt.column_name || ')
            group by ' || stmt.column_name || ';';
EXECUTE vCommand;

Answer 1

INTO在这个用例中含糊不清,然后在那里被禁止.

您可以使用CREATE TABLE AS SELECT.

CREATE OR REPLACE FUNCTION public.f1(tablename character varying)
 RETURNS integer
 LANGUAGE plpgsql
AS $function$
begin
  execute 'create temp table xx on commit drop as select * from ' 
                                      || quote_ident(tablename);
  return (select count(*) from xx);
end;
$function$

postgres=# select f1('omega');
 f1 
????
  2
(1 row)