RE: Count(*) last 30 seconds

Why use count(1) instead of count(*)? They all does the same thing. So does count(primary key).

Richard Ji

-----Original Message-----
Sent: Tuesday, February 11, 2003 12:09 PM To: Multiple recipients of list ORACLE-L

Hi,

1. create unique index or primary key AND update statistics of the table
2. use count(1) instead of count(*)

JP

On Tuesday 11 February 2003 17:19, you wrote:
> Hi list,
>
> I issue a select count(*) from mytable and last 30 seconds.
>
> The table has 1,466,196 records and were loaded with a batch process, so
> they are in a countinous space.
>
> I consider that time exagerated.
>
> The TBS is LMT with a Uniform size of 128 MB.
>
> The block size is 8MB, version 9.2.0.1.0 in Windows 2000.
>
> Where should I start looking ???
>
> TIA
>
> Ramon E. Estevez
> com.banilejas_at_codetel.net.do
> 809-565-3121

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