Convert To BigInt

May 20, 2008



This select qry runs for abt 20 mins, I think convert to bigint is causing the slowness. Underlying tbl has abt 50000 recs. Pl note that I am runnign this in SQL SERVER 2005, Where it takes abt 20 mins. However when I run this on SQL Server 2000, it takes only 4 mins.


ANy ideas to speed up this qry.

select distinct convert(bigint,c.loannum) as loannum ,c.ampsstatus ,((convert(char(10),c.insdate,110) )) as MaxInsdate
from Conversion_AllStatus_History2007 c
where ((convert(char(10),c.insdate,110) )) =(select max((convert(char(10),a.insdate,110) )) from
Conversion_AllStatus_History2007 a
where convert(bigint,a.loannum)=convert(bigint,c.loannum))

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function return: cast((cast(@dt as binary(8))) as bigint)

small test:

sql Code:






Original
- sql Code




declare @i int, @d datetime
declare @t table (id int identity, dt datetime, bd binary(8), bi bigint)
set @i=1
set @d = getdate()
while @i between 1 and 20
begin
insert @t(dt, bd, bi)
select
@d,
cast(@d as binary(8)),
cast((cast(@d as binary(8))) as bigint)

set @d = dateadd(mi, @i, @d)
set @i=@i+1
end

select *
from @t
order by bi






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Hello

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Thanks,

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Precision 19 (Byte)
Size 0 (ADO_LNGPTR)
Type adBigInt
Value Null

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PLEASE HELP.

Regards,

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[Code] ....

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evFieldVal          
(No column name)
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[Code] ....

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I logged out and came back and tried again, and it still worked. So then I tried…

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[Code] ...

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