通过 .NET 使用 PL/SQL 集合类型参数调用 Oracle 过程
Calling an Oracle procedure with a PL/SQL collection type parameter via .NET
我正在尝试通过 .NET 调用 Oracle 存储过程。通常这不是问题,但此存储过程包含一个 PL/SQL 集合类型的参数:
create or replace type test_type as table of number;
PROCEDURE TEST1 (pvTest IN test_type);
这是我的 C# 代码:
var receiverIds = new decimal[] { 683552, 683553, 683572, 683573, 683592, 683593, 683594, 683612 };
var receiversList = new OracleParameter("pvTest", OracleDbType.Decimal, ParameterDirection.Input);
receiversList.CollectionType = OracleCollectionType.PLSQLAssociativeArray;
receiversList.Size = receiverIds.Length;
receiversList.Value = receiverIds;
using (var oracleCommand = new OracleCommand())
{
oracleCommand.Connection = this.oracleConnection;
oracleCommand.CommandText = "test_package.TEST1";
oracleCommand.BindByName = true;
oracleCommand.Parameters.Add(parameter);
oracleCommand.CommandType = CommandType.StoredProcedure;
oracleCommand.ExecuteNonQuery();
}
执行此操作时,出现 "ORA-06550: Wrong number or type of arguments" 错误。在本主题中:ORA-06550: Wrong number or type of arguments error | Calling Oracle Procedure with Table type IN parameter 我发现我应该在我的包中声明我的自定义类型。
所以我创建了一个如下所示的测试包:
CREATE OR REPLACE PACKAGE test_package_gkeu IS
TYPE test_type IS TABLE OF NUMBER;
PROCEDURE TEST1 (pvTest IN test_type);
END test_package_gkeu;
/
CREATE OR REPLACE PACKAGE BODY test_package_gkeu IS
PROCEDURE TEST1 (pvTest IN test_type) IS
BEGIN
null;
END TEST1;
END test_package_gkeu;
/
但是,这仍然产生了完全相同的错误。经过更多的搜索和尝试后,我发现我需要将 "INDEX BY BINARY_INTEGER" 添加到 "test_type" 并且可以正常工作,这样我就可以毫无错误地调用我的过程。
然后我开始将原始过程中的 SQL 查询添加到此测试包中:
select *
from receiver r
where r.receiverid in (select /*+cardinality(t 5)*/ *
from table(cast((pvTest) as test_type)) t
where rownum >= 0);
但现在我无法再构建我的包了。我在 Whosebug (PlSQL Invalid data type even after casting why) 上发现了以下内容:
PL/SQL types defined in package are invisible to SQL statements: they are pure PLSQL constructs and the SQL language can't access them directly.
并且 somewhere else 我发现:
Index by tables cannot be declared globally; the following construct generates a PLS-00355: use of pl/sql table not allowed in this context.
所以我在这里进退两难。如果自定义类型没有 "INDEX BY",我无法调用该过程,当我在包中声明它时,我无法在查询中使用该类型,并且由于"INDEX BY".
有人能帮帮我吗?我想我需要找到一种方法来在类型没有 "INDEX BY" 时调用该过程,但我已经尝试了我能想到或找到的所有方法。
ps。我正在使用 .NET 4.5 和 Oracle.ManagedDataAccess v 4.121.1.0,不幸的是,我们的 Oracle 数据库仍然是 10g (10.2.0.4.0)。
通过 ODP.NET 的过程调用仅支持关联数组,即 INDEX BY ...
,不支持嵌套表。
一个解决方案是在您的 Orale 程序中转换:
CREATE OR REPLACE PACKAGE test_package_gkeu IS
TYPE test_type IS TABLE OF NUMBER;
TYPE test_type_associative IS TABLE OF NUMBER INDEX BY INTEGER;
PROCEDURE TEST1 (pvTest IN test_type_associative ) IS
v test_type := test_type();
BEGIN
v.Extend(pvTest.COUNT);
for i in pvTest.First..pvTest.Last loop
v(i) := pvTest(i)
end loop;
select *
into ...
from receiver r
where r.receiverid MEMBER OF (v);
END;
对于 DML 语句,还请考虑以下内容:
FORALL i IN INDICES OF pvTest
INSERT INTO MY_TABLE (COL_A)
VALUES (pvTest(i));
or
FORALL i IN INDICES OF pvTest
DELETE FROM receiver
WHERE receiverid = pvTest(i);
我正在尝试通过 .NET 调用 Oracle 存储过程。通常这不是问题,但此存储过程包含一个 PL/SQL 集合类型的参数:
create or replace type test_type as table of number;
PROCEDURE TEST1 (pvTest IN test_type);
这是我的 C# 代码:
var receiverIds = new decimal[] { 683552, 683553, 683572, 683573, 683592, 683593, 683594, 683612 };
var receiversList = new OracleParameter("pvTest", OracleDbType.Decimal, ParameterDirection.Input);
receiversList.CollectionType = OracleCollectionType.PLSQLAssociativeArray;
receiversList.Size = receiverIds.Length;
receiversList.Value = receiverIds;
using (var oracleCommand = new OracleCommand())
{
oracleCommand.Connection = this.oracleConnection;
oracleCommand.CommandText = "test_package.TEST1";
oracleCommand.BindByName = true;
oracleCommand.Parameters.Add(parameter);
oracleCommand.CommandType = CommandType.StoredProcedure;
oracleCommand.ExecuteNonQuery();
}
执行此操作时,出现 "ORA-06550: Wrong number or type of arguments" 错误。在本主题中:ORA-06550: Wrong number or type of arguments error | Calling Oracle Procedure with Table type IN parameter 我发现我应该在我的包中声明我的自定义类型。
所以我创建了一个如下所示的测试包:
CREATE OR REPLACE PACKAGE test_package_gkeu IS
TYPE test_type IS TABLE OF NUMBER;
PROCEDURE TEST1 (pvTest IN test_type);
END test_package_gkeu;
/
CREATE OR REPLACE PACKAGE BODY test_package_gkeu IS
PROCEDURE TEST1 (pvTest IN test_type) IS
BEGIN
null;
END TEST1;
END test_package_gkeu;
/
但是,这仍然产生了完全相同的错误。经过更多的搜索和尝试后,我发现我需要将 "INDEX BY BINARY_INTEGER" 添加到 "test_type" 并且可以正常工作,这样我就可以毫无错误地调用我的过程。
然后我开始将原始过程中的 SQL 查询添加到此测试包中:
select *
from receiver r
where r.receiverid in (select /*+cardinality(t 5)*/ *
from table(cast((pvTest) as test_type)) t
where rownum >= 0);
但现在我无法再构建我的包了。我在 Whosebug (PlSQL Invalid data type even after casting why) 上发现了以下内容:
PL/SQL types defined in package are invisible to SQL statements: they are pure PLSQL constructs and the SQL language can't access them directly.
并且 somewhere else 我发现:
Index by tables cannot be declared globally; the following construct generates a PLS-00355: use of pl/sql table not allowed in this context.
所以我在这里进退两难。如果自定义类型没有 "INDEX BY",我无法调用该过程,当我在包中声明它时,我无法在查询中使用该类型,并且由于"INDEX BY".
有人能帮帮我吗?我想我需要找到一种方法来在类型没有 "INDEX BY" 时调用该过程,但我已经尝试了我能想到或找到的所有方法。
ps。我正在使用 .NET 4.5 和 Oracle.ManagedDataAccess v 4.121.1.0,不幸的是,我们的 Oracle 数据库仍然是 10g (10.2.0.4.0)。
通过 ODP.NET 的过程调用仅支持关联数组,即 INDEX BY ...
,不支持嵌套表。
一个解决方案是在您的 Orale 程序中转换:
CREATE OR REPLACE PACKAGE test_package_gkeu IS
TYPE test_type IS TABLE OF NUMBER;
TYPE test_type_associative IS TABLE OF NUMBER INDEX BY INTEGER;
PROCEDURE TEST1 (pvTest IN test_type_associative ) IS
v test_type := test_type();
BEGIN
v.Extend(pvTest.COUNT);
for i in pvTest.First..pvTest.Last loop
v(i) := pvTest(i)
end loop;
select *
into ...
from receiver r
where r.receiverid MEMBER OF (v);
END;
对于 DML 语句,还请考虑以下内容:
FORALL i IN INDICES OF pvTest
INSERT INTO MY_TABLE (COL_A)
VALUES (pvTest(i));
or
FORALL i IN INDICES OF pvTest
DELETE FROM receiver
WHERE receiverid = pvTest(i);