标签: ora-04044

我有以下不编译的小函数:

function f_query_01  Return interval Day to second is 
  start_time timestamp(3);
  end_time timestamp(3);
  time_diff interval Day to second;  
  c_query_number number;

begin

  start_time := systimestamp; 
  select count(*) into c_query_number from wg;  <--This is the line that errors out
  end_time := systimestamp;
  time_diff := start_time - end_time;

  return time_diff;

end f_query_01;

编译器给我以下错误:

Error(29,3): PL/SQL: SQL Statement ignored
Error(29,44): PL/SQL: ORA-04044: procedure, function, package, or type is not allowed here

导致此错误的原因是什么？如何解决？

我试图从4个表FACTS_CDPM，PRODUCT，CUSTOMER，DATE中获取数据到CUST_ALLOC表中，当我只运行select查询时，我得到了结果，但是当我将其放在过程中并用select语句插入时如下所示，我收到错误消息“错误（11,15）：PL / SQL：ORA-04044：此处不允许使用过程，函数，程序包或类型”

请问有人可以帮忙为什么会这样吗？

谢谢！

INSERT INTO CUST_ALLOC
(PART_ID,
      CUSTOMER,
      MONTH,
      QTY_ALLOCATED
        )    
    SELECT P.PROD_ID,
       C.PURCHASING,
       D.MONTH_ID,
       SUM(X.QTY)
FROM FACTS_CDPM X INNER JOIN PRODUCT P ON P.PROD_NUM=X.PROD_NUM 
                    INNER JOIN CUSTOMER C ON X.CUST_NUM=C.CUST_NUM 
                    INNER JOIN DATE D ON X.DATE_NUM=D.DATE_NUM
WHERE MEASURE_NUM=18
GROUP BY P.PROD_ID,C.PURCHASING,D.MONTH_ID;