Question

在oracle中的以下代码中获取无效列错误。但是当我分别执行分配给游标的查询时，它工作得很好。请让我知道我在做什么错误：

CREATE OR REPLACE PROCEDURE etl_mergeEmployeeAttendee
(
  v_EmployeeNumber IN VARCHAR2 DEFAULT NULL ,
  v_AttendeeName OUT NVARCHAR2,
  v_EmployeeAttendeeId OUT NUMBER,
  v_AttendeeTitle OUT NVARCHAR2,
  v_Company OUT NVARCHAR2,
  v_Relationship OUT NVARCHAR2,
  v_Operation OUT NUMBER,
  v_Error OUT NUMBER
)
AS
  v_Employee_AttendeeId NUMBER(10,0);
  v_Employee_Id NUMBER(10,0);
  v_Attendee_Name NVARCHAR2(50);
  v_Attendee_Title NVARCHAR2(50);
  v_Com_pany NVARCHAR2(50);
  v_Relation_ship NVARCHAR2(50);

  CURSOR sel_prod_attendee_csr
     IS SELECT a.EmployeeAttendeeId ,
          a.EmployeeId ,
          a.AttendeeName ,
          a.AttendeeTitle ,
          a.Company ,
          a.Relationship 
        FROM EmployeeAttendee a,
             Employee b
        WHERE b.EmployeeNumber = v_EmployeeNumber
          AND a.EmployeeId = b.EmployeeId;

BEGIN
  OPEN sel_prod_attendee_csr;
  FETCH sel_prod_attendee_csr INTO
    v_Employee_AttendeeId, v_Employee_Id,v_Attendee_Name,v_Attendee_Title,v_Com_pany,v_Relation_ship;
  IF sel_prod_attendee_csr%FOUND= true THEN

    /* found */
    BEGIN
      v_Operation := 1 ;
      v_AttendeeTitle := v_Attendee_Title ;
      v_Company := v_Com_pany ;
      v_Relationship := v_Relation_ship ;
      v_AttendeeName :=v_Attendee_Name;
    END;
  ELSE
    v_Operation := 2 ;-- Insert
  END IF;
  CLOSE sel_prod_attendee_csr;
END;

Answer 1

您可以获得的最佳建议 - 当您可以使用隐式游标时，请不要使用显式游标。它们通常更快，需要更少的代码，更易于维护，并且您不太可能遇到这样的错误。

将其改写为表格：

For sel_prod_attendee_csr in
  select a.EmployeeAttendeeId ,
         ...
  from   ...
loop
  etl_mergeEmployeeAttendee.EmployeeAttendeeId = a.EmployeeAttendeeId;
  ...

如您所见，您可以转储丑陋的“v_”前缀，并使用过程名称命名变量。

如果您只想要一行，那么只需使用SQL语句：

  select a.EmployeeAttendeeId ,
         ...
  into   etl_mergeEmployeeAttendee.EmployeeAttendeeId
  from   ...

考虑到程序的名称，我怀疑你完全倾销PL / SQL游标代码并且只是运行一个直接的SQL语句会好得多。

在oracle中获取“无效列索引”错误

1 个答案: