通过C#将整数数组传递给oracle过程 [英] pass integer array to oracle procedure by c#

问题描述

我想通过c#将整数数组传递给存储过程.该过程可通过sql developer开发，但在c#中不起作用.这是我的代码，但是我被卡住了 wrong number or types of arguments in call to 'V1'错误.请帮我 C#代码:

I want to pass an integer array to a stored procedure via c#. the procedure works via sql developer but in c# it doesn't work. this is my code but i got stuck by the wrong number or types of arguments in call to 'V1' error. please help me c# code:

DBEngine oracleEngine = new OracleEngine(connectionString);

DbCommand cmd = oracleEngine.MakeTextCmd("v1");
cmd.CommandType = CommandType.StoredProcedure;

OracleParameter param1 = new OracleParameter();

List<int> values = new List<int>() { 1, 2, 3, 4, 5 };

OracleParameter p_strings = new OracleParameter();
p_strings.ParameterName = "VehicleGroupID_Array";
p_strings.OracleDbType = OracleDbType.Int32;
p_strings.Direction = ParameterDirection.Input;
p_strings.CollectionType = OracleCollectionType.PLSQLAssociativeArray;
p_strings.Value = new int[5]{1,2,3,4,5};
cmd.Parameters.Add(p_strings);

//DbDataReader reader = oracleEngine.ExecuteReader(cmd);
cmd.ExecuteNonQuery();

我的程序:

create or replace PROCEDURE v1
(
  VehicleGroupID_Array IN INNUMARRAY --  List
)
IS
  p_recordset SYS_REFCURSOR;
BEGIN
  OPEN p_recordset FOR
  SELECT DISTINCT
         "vUserVehicles"."UserID",
         "vUserVehicles"."VehicleID",
         "vUserVehicles"."VehicleName",
         "vUserVehicles"."VehicleSerialNo",
         "vUserVehicles"."Description",
         "vUserVehicles"."VehicleNo",
         "vUserVehicles"."VehicleShahrbaniNo",
         "vUserVehicles"."GSMWirelessDialNo",
         "vUserVehicles"."Status",
         "vUserVehicles"."ThurayaDialNo",
         "vUserVehicles"."Company",
         "vUserVehicles"."MachineModelId",
         "vUserVehicles"."VehicleTypeID",
         "vUserVehicles"."Consumption",
         "vUserVehicles"."RegistrationCode",
         "vUserVehicles"."VehicleKindId"
  FROM   "vUserVehicles"
         INNER JOIN "VehicleGroupDetail"
         ON "vUserVehicles"."VehicleID" = "VehicleGroupDetail"."VehicleID"
  WHERE  "VehicleGroupDetail"."VehicleGroupID" IN (
           select column_value from table(VehicleGroupID_Array))
         )
  ORDER BY "vUserVehicles"."Description" ASC;

  DBMS_SQL.RETURN_RESULT(p_recordset);
END;

和我的类型:

create or replace TYPE INNUMARRAY AS TABLE OF INTEGER;

推荐答案

您的类型:

create or replace TYPE INNUMARRAY AS TABLE OF INTEGER;

是在SQL范围内定义的集合.

is a collection defined in the SQL scope.

您传递的参数:

p_strings.CollectionType = OracleCollectionType.PLSQLAssociativeArray;
p_strings.Value = new int[5]{1,2,3,4,5};

是一个关联数组，只能在PL/SQL范围内(即在程序包中或在PL/SQL块内)定义，而不能在SQL范围内使用.

is an associative array which can only be defined in a PL/SQL scope (i.e. in a package or within a PL/SQL block) and cannot be used in an SQL scope.

它们是两种不同且不兼容的数据类型.

They are two different and incompatible data types.

相反，您可以在包中创建关联数组类型，然后将关联数组中的每个值手动提取到可以在SQL范围内使用的集合中:

Instead, you can create an associative array type in a package and then manually extract each value from the associative array into a collection that can be used in the SQL scope:

CREATE PACKAGE vehicles_pkg IS
  TYPE INNUMASSOCARRAY IS TABLE OF INTEGER INDEX BY BINARY_INTEGER;

  PROCEDURE v1
  (
    VehicleGroupID_Array IN INNUMASSOCARRAY
  );
END;
/

CREATE PACKAGE BODY vehicles_pkg IS
  PROCEDURE v1
  (
    VehicleGroupID_Array IN INNUMASSOCARRAY
  )
  IS
    p_recordset SYS_REFCURSOR;
    p_array     INNUMARRAY := INNUMARRAY();
    i           BINARY_INTEGER;
  BEGIN
    i := VehicleGroupID_Array.FIRST;
    WHILE i IS NOT NULL LOOP
      p_array.EXTEND;
      p_array( p_array.COUNT ) := VehicleGroupID_Array(i);
      i := VehicleGroupID_Array.NEXT(i);
    END LOOP;

    -- Rest of your procedure using p_array instead of the associative array.
  END;
END;
/

我可以在包外部定义关联数组类型吗?我希望它们独立.

can I define the associative array type outside of package? I want them to be standalone.

否，但是您可以定义一个仅包含以下类型的包:

No, but you can define a package just containing the type:

CREATE PACKAGE vehicles_pkg IS
  TYPE INNUMASSOCARRAY IS TABLE OF INTEGER INDEX BY BINARY_INTEGER;
END;
/

CREATE PROCEDURE v1
(
  VehicleGroupID_Array IN vehicles_pkg.INNUMASSOCARRAY
)
IS
  p_recordset SYS_REFCURSOR;
  p_array     INNUMARRAY := INNUMARRAY();
  i           BINARY_INTEGER;
BEGIN
  i := VehicleGroupID_Array.FIRST;
  WHILE i IS NOT NULL LOOP
    p_array.EXTEND;
    p_array( p_array.COUNT ) := VehicleGroupID_Array(i);
    i := VehicleGroupID_Array.NEXT(i);
  END LOOP;

  -- Rest of your procedure using p_array instead of the associative array.
END;
/

或者更好的做法是，在包中创建一些通用命名的类型和函数，以从关联数组转换为集合，然后在过程中重用它们:

Or, better, create some generically named types and a function in the package to translate from an associative array to a collection and then reuse them in your procedures:

SQL小提琴

Oracle 11g R2架构设置:

CREATE TYPE IntList AS TABLE OF INTEGER
/

CREATE PACKAGE tools IS
  TYPE IntMap IS TABLE OF INTEGER INDEX BY BINARY_INTEGER;

  FUNCTION IntMapToList(
    i_map IntMap
  ) RETURN IntList;
END;
/

CREATE PACKAGE BODY tools IS
  FUNCTION IntMapToList(
    i_map IntMap
  ) RETURN IntList
  IS
    o_list IntList := IntList();
    i      BINARY_INTEGER;
  BEGIN
    IF i_map IS NOT NULL THEN
      i := o_list.FIRST;
      WHILE i IS NOT NULL LOOP
        o_list.EXTEND;
        o_list( o_list.COUNT ) := i_map( i );
        i := i_map.NEXT( i );
      END LOOP;
    END IF;
    RETURN o_list;
  END;
END;
/

CREATE PROCEDURE v1
(
  VehicleGroupID_Array IN tools.IntMap
)
IS
  p_recordset SYS_REFCURSOR;
  p_array     IntList := tools.IntMapToList( VehicleGroupID_Array );
  i           BINARY_INTEGER;
BEGIN
  -- Rest of your procedure using p_array instead of the associative array.
  NULL;
END;
/

这篇关于通过C#将整数数组传递给oracle过程的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！