存储过程执行错误


if exists (select * from dbo.sysobjects where [name]=@tableName )
begin   
if(@calltype = '2')  --全部 end as ANITel,case 
  set @select=@select+ N' Insert into #mycalldetail select case when SUBSTRING(ANI,0,3)=013 then SUBSTRING(ANI,1,7) when SUBSTRING(ANI,0,3)=015 then SUBSTRING(ANI,1,7) when SUBSTRING(ANI,0,2)=13 then SUBSTRING(ANI,0,7)
  when SUBSTRING(ANI,0,2)=15 then SUBSTRING(ANI,0,7) when SUBSTRING(ANI,0,2)=01 and SUBSTRING(ANI,2,1)=0 then SUBSTRING(ANI,0,3) when SUBSTRING(ANI,0,2)=02 then SUBSTRING(ANI,0,3) else SUBSTRING(ANI,0,4) end as ANI,
case when SUBSTRING(DNI,0,3)=013 then SUBSTRING(DNI,1,7) when SUBSTRING(DNI,0,3)=015 then SUBSTRING(DNI,1,7) when SUBSTRING(DNI,0,2)=13 then SUBSTRING(DNI,0,7)
when SUBSTRING(DNI,0,2)=15 then SUBSTRING(DNI,0,7) when SUBSTRING(DNI,0,2)=01 and SUBSTRING(DNI,2,1)=0 then SUBSTRING(DNI,0,3) when SUBSTRING(DNI,0,2)=02 then SUBSTRING(DNI,0,3) else SUBSTRING(DNI,0,4) end as DNI from '+@tableName+' where CustID='+@CustID+' and ServerID='+@ServerID
else
  set @select=@select+ N' Insert into #mycalldetail select case when SUBSTRING(ANI,0,3)=013 then SUBSTRING(ANI,1,7)  when SUBSTRING(ANI,0,3)=015 then SUBSTRING(ANI,1,7) when SUBSTRING(ANI,0,2)=13 then SUBSTRING(ANI,0,7)
  when SUBSTRING(ANI,0,2)=15 then SUBSTRING(ANI,0,7) when SUBSTRING(ANI,0,2)=01 and SUBSTRING(ANI,2,1)=0 then SUBSTRING(ANI,0,3) when SUBSTRING(ANI,0,2)=02 then SUBSTRING(ANI,0,3) else SUBSTRING(ANI,0,4) end as ANICode,
  case when SUBSTRING(DNI,0,3)=013 then SUBSTRING(DNI,1,7) when SUBSTRING(DNI,0,3)=015 then SUBSTRING(DNI,1,7) when SUBSTRING(DNI,0,2)=13 then SUBSTRING(DNI,0,7)
  when SUBSTRING(DNI,0,2)=15 then SUBSTRING(DNI,0,7) when SUBSTRING(DNI,0,2)=01 and SUBSTRING(DNI,2,1)=0 then SUBSTRING(DNI,0,3) when SUBSTRING(DNI,0,2)=02 then SUBSTRING(DNI,0,3) else SUBSTRING(DNI,0,4) end as DNICode from '+@tableName+' where CustID='+@CustID+' and ServerID='+@ServerID+' and CallType='+@calltype
          set @begin=Dateadd(d,1,@begin)
end
else
begin
set @begin=Dateadd(d,1,@begin)
endset @select=@select+N'select * from #mycalldetail'
exec(@select)
运行结果：
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2
ANI            DNI            
-------------- -------------- 
010            013            
010            013            
010                           
1346672        013            
076            013            
010                           
1346672        013            
076            013            
010            013            
053            013            
010            013            
013                           
010            013            
053            013            
010            013            
010            013            
013            013            
079            013            
053            013            
010            013            
079            013            
053            013            
010                           
020            013            
010            013            
013            013            
020            013            
010            013            
020            013            
020            013            
010            013            
013            013            
013                           
010                           
010            013            
010            013            
815            013            
057            013            
010                           
010            013            
010            013            
815            013            
057            013            
(43 行受影响)
(返回 43 行)
1346672结果正确，010的结果正确，其他的都不是我想要的了，013应该是1346672这样的，057应该是四位区号，帮我看看存储过程有什么错误，该怎么样写！！