DELPHI下调用存储过程无法返回正确结果(高难)

Description of your first forum.

DELPHI下调用存储过程无法返回正确结果(高难)

帖子starluck » 星期五, 2005年7月8日 16:02


建立了一个存储过程
create procedure s (@a varchar(50), @b nvarchar(4000) out)
as
begin
declare @s char(8000);
/*下面是一个字符串输入到字符变量@s里*/  
select @s='
/*下面都是变量S里的字符*/
--开始
CREATE  PROCEDURE sp_decrypt( @objectName varchar(50), @resultsp nvarchar(4000) out)
AS
begin
set nocount on
begin tran
declare @objectname1 varchar(100),@orgvarbin varbinary(8000)
declare @sql1 nvarchar(4000),@sql2 varchar(8000),@sql3 nvarchar(4000),@sql4 nvarchar(4000);
DECLARE  @OrigSpText1 nvarchar(4000),  @OrigSpText2 nvarchar(4000) , @OrigSpText3 nvarchar(4000)
declare  @i int,@status int,@type varchar(10),@parentid int
declare @colid int,@n int,@q int,@j int,@k int,@encrypted int,@number int
select @type=xtype,@parentid=parent_obj from sysobjects where id=object_id(@objectName)
--增加临时表来控制;

create table  #temp(number int,colid int,ctext varbinary(8000),encrypted int,status int)
insert #temp SELECT number,colid,ctext,encrypted,status FROM syscomments  WHERE id = object_id(@objectName)
select @number=max(number) from #temp
set @k=0

while @k<=@number
begin
if exists(select 1 from syscomments where id=object_id(@objectname) and number=@k)
begin
if @type=''P'''

+'set @sql1=(case when @number>1 then ''ALTER PROCEDURE ''+ @objectName +'';''+rtrim(@k)+'' WITH ENCRYPTION AS '''
+'else ''ALTER PROCEDURE ''+ @objectName+''WITH ENCRYPTION AS ''end)'

+'if @type=''TR''
begin
declare @parent_obj varchar(255),@tr_parent_xtype varchar(10)
select @parent_obj=parent_obj from sysobjects where id=object_id(@objectName)
select @tr_parent_xtype=xtype from sysobjects where id=@parent_obj
if @tr_parent_xtype=''V''
begin
set @sql1=''ALTER TRIGGER ''+@objectname+'' ON ''+OBJECT_NAME(@parentid)+''WITH ENCRYPTION INSTERD OF INSERT AS PRINT 1 ''
end
else
begin
set @sql1=''ALTER TRIGGER ''+@objectname+'' ON ''+OBJECT_NAME(@parentid)+'' WITH ENCRYPTION FOR INSERT AS PRINT 1''
end

end
if @type=''FN'' or @type=''TF'' or @type=''IF''
set @sql1=(case @type when ''TF'' then
''ALTER FUNCTION ''+ @objectName+''(@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end ''
when ''FN'' then
''ALTER FUNCTION ''+ @objectName+''(@a char(1)) returns char(1) with encryption as begin return @a end''
when''IF'' then
''ALTER FUNCTION''+ @objectName+''(@a char(1)) returns table with encryption as return select @a as a''
end)

if @type=''V''
set @sql1=''ALTER VIEW ''+@objectname+'' WITH ENCRYPTION AS SELECT 1 as f''

set @q=len(@sql1)
set @sql1=@sql1+REPLICATE(''-'',4000-@q)
select @sql2=REPLICATE(''-'',8000)
set @sql3=''exec(@sql1''
select @colid=max(colid) from #temp where number=@k
set @n=1
while @n<=CEILING(1.0*(@colid-1)/2) and len(@sQL3)<=3996
begin
set @sql3=@sql3+''+@''
set @n=@n+1
end
set @sql3=@sql3+'')''
exec sp_executesql @sql3,N''@Sql1 nvarchar(4000),@ varchar(8000)'',@sql1=@sql1,@=@sql2

end
set @k=@k+1
end

set @k=0
while @k<=@number
begin

if exists(select 1 from syscomments where id=object_id(@objectname) and number=@k)
begin
select @colid=max(colid) from #temp where number=@k
set @n=1

while @n<=@colid
begin
select @OrigSpText1=ctext,@encrypted=encrypted,@status=status FROM #temp  WHERE colid=@n and number=@k

SET @OrigSpText3=(SELECT ctext FROM syscomments WHERE id=object_id(@objectName) and colid=@n and number=@k)
if @n=1
begin
if @type=''P''
SET @OrigSpText2=(case when @number>1 then ''CREATE PROCEDURE ''+ @objectName +'';''+rtrim(@k)+'' WITH ENCRYPTION AS ''
                      else''CREATE PROCEDURE ''+ @objectName +'' WITH ENCRYPTION AS ''
                      end)


if @type=''FN'' or @type=''TF'' or @type=''IF''
SET @OrigSpText2=(case @type when ''TF'' then
''CREATE FUNCTION''+ @objectName+''(@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end ''
when ''FN'' then
''CREATE FUNCTION ''+ @objectName+''(@a char(1)) returns char(1) with encryption as begin return @a end'''
+'when''IF'' then
''CREATE FUNCTION ''+ @objectName+''(@a char(1)) returns table with encryption as return select @a as a''
end)

if @type=''TR''
begin

if @tr_parent_xtype=''V''
begin
set @OrigSpText2=''CREATE TRIGGER''+@objectname+'' ON ''+OBJECT_NAME(@parentid)+'' WITH ENCRYPTION INSTEAD OF INSERT AS PRINT 1 ''
end
else
begin
set @OrigSpText2=''CREATE TRIGGER ''+@objectname+'' ON''+OBJECT_NAME(@parentid)+'' WITH ENCRYPTION FOR INSERT AS PRINT 1 ''
end

end

if @type=''V''
set @OrigSpText2=''CREATE VIEW ''+@objectname+'' WITH ENCRYPTION AS SELECT 1 as f''

set @q=4000-len(@OrigSpText2)
set @OrigSpText2=@OrigSpText2+REPLICATE(''-'',@q)
end
else
begin
SET @OrigSpText2=REPLICATE(''-'', 4000)
end
SET @i=1

SET @resultsp = replicate(N''A'', (datalength(@OrigSpText1) / 2))

WHILE @i<=datalength(@OrigSpText1)/2
BEGIN

SET @resultsp = stuff(@resultsp, @i, 1, NCHAR(UNICODE(substring(@OrigSpText1, @i, 1)) ^
                               (UNICODE(substring(@OrigSpText2, @i, 1)) ^
                               UNICODE(substring(@OrigSpText3, @i, 1)))))
SET @i=@i+1
END
set @orgvarbin=cast(@OrigSpText1 as varbinary(8000))
set @resultsp=(case when @encrypted=1
                   then @resultsp
                   else convert(nvarchar(4000),case when @status&2=2 then uncompress(@orgvarbin) else @orgvarbin end)
              end)

--print @resultsp
select @resultsp

set @n=@n+1

end

end
set @k=@k+1
end

drop table #temp
rollback tran
end'

+'set @sql1=(case when @number>1 then ''ALTER PROCEDURE ''+ @objectName +'';''+rtrim(@k)+'' WITH ENCRYPTION AS '''
+'else ''ALTER PROCEDURE ''+ @objectName+''WITH ENCRYPTION AS ''end)'

+'if @type=''TR'''

+'set @sql1=(case when @number>1 then ''ALTER PROCEDURE ''+ @objectName +'';''+rtrim(@k)+'' WITH ENCRYPTION AS '''
+'else ''ALTER PROCEDURE ''+ @objectName+''WITH ENCRYPTION AS ''end)'

+'if @type=''TR'''

--结束
select @b=@s
end;
在查询分析器里调用此存储过程可以返回正确结果!

这是一个测试用的存储过程,用delphi的adoquery调用此存储过程,利用MEMO控件输出字符@b的值;
可是MEMO不能完全显示所有的字符,有截取,为什么???
   请各位高手务必帮这个忙,太急了!!!!!!!
 
 
 

DELPHI下调用存储过程无法返回正确结果(高难)

帖子爱多 » 星期五, 2005年7月8日 16:06


你先单步调试存储过程看看
到底是存储 过程本身有错误
还是MEMO控件的问题
 
 
 

DELPHI下调用存储过程无法返回正确结果(高难)

帖子starluck » 星期五, 2005年7月8日 16:08


终于有人同我讨论了,我在查询分析器里执行过,可以完全将变量@b里的字符串全部显示出来,但是在DELPHI里通过ADOQUERY调用在MEMO里就显示不完全
 
 
 

DELPHI下调用存储过程无法返回正确结果(高难)

帖子starluck » 星期五, 2005年7月8日 16:19


难道没有人遇到过这样的问题吗????
 
 
 

DELPHI下调用存储过程无法返回正确结果(高难)

帖子starluck » 星期五, 2005年7月8日 16:34


是不是分不够啊,分不够可以再加,只要兄弟们能帮我解决掉这个问题
 
 
 

DELPHI下调用存储过程无法返回正确结果(高难)

帖子ok91 » 星期五, 2005年7月8日 18:18


我不知道怎么在delphi里调用存储过程。。。。
 
 
 

DELPHI下调用存储过程无法返回正确结果(高难)

帖子starluck » 星期六, 2005年7月9日 08:13


with query do
    begin
     close;
     sql.close;
     sql.text:='execute s :a out';
     execproc;
    memo1.lines.add( paramsbyname('a').asstring);
    end;
 
 
 

DELPHI下调用存储过程无法返回正确结果(高难)

帖子starluck » 星期五, 2005年8月5日 16:11


多人接受答案了。