这是我的存储过程：
SET TERM ^ ;
CREATE PROCEDURE INSERT_ETYPE (
E_ID Integer,
E_NAME Varchar(20) CHARACTER SET NONE )
RETURNS (
NEW_ID Integer)
AS
declare variable addr varchar(20);
declare variable type smallint;
declare variable ord smallint;
declare variable cmd varchar(255);
declare variable answr varchar(255);
begin
insert into ETYPE
select * from ETYPE where ID=:e_id;
select max(ID) from ETYPE into :new_id;
update ETYPE set NAME = :e_name where ID = :new_id;
for
select ADDR,REGTYPE,ORD from ETYPEREGS
where ETYPE_ID=:e_id
into :addr,:type,:ord
do
begin
insert into ETYPEREGS
(ETYPE_ID,ADDR,REGTYPE,ORD)
values
(:new_id,:addr,:type,:ord);
end
for
select CMD,ANSWR,ORD,REGTYPE from ETYPESPECIAL
where ETYPE_ID=:e_id
into :cmd,:answr,:ord,:type
do
begin
insert into ETYPESPECIAL
(ETYPE_ID,CMD,ANSWR,ORD,REGTYPE)
values
(:new_id,:cmd,:answr,:ord,:type);
end
end^
SET TERM ; ^
这是我在 C++ 中的代码：
StoredProc_InsertEType->ParamByName("E_ID")->AsInteger = src_id;
StoredProc_InsertEType->ParamByName("E_NAME")->AsString = _name;
try
{
StoredProc_InsertEType->ExecProc();
new_id = StoredProc_InsertEType->ParamByName(L"NEW_ID")->AsInteger;
}
catch(EDBEngineError & e)
{
errors->Add(e.Message);
return false;
}
无论表 ETYPE 不为空，变量 new_id 始终为零。当我SELECT MAX(ID) FROM ETYPE从管理工具 FlameRobin 运行命令时，它返回正确的数字（~180）。我应该怎么做才能获得 NEW_ID 参数的正确值？