Hmmm ... everyone is throwing their ideas around ... so here is mine ...
Hopefully on this large table you have a PK.
1. First time when you do the count(*) (I hope it will be > 10 minutes), do it as follows ...
select count(*), max(pk_column)
from my ludicrously_large_table
/
Somehow, remember the max(pk_column) value.
Next time onwards do ...
select count(*), max(pk_column)
from my ludicrously_large_table
where pk_column > previously_saved_max_pk_column_value
/
Then add this count(*) plus last count(*) to get the total number.
How is that ??
Raj
______________________________________________________
Rajendra Jamadagni MIS, ESPN Inc.
Rajendra dot Jamadagni at ESPN dot com
Any opinion expressed here is personal and doesn't reflect that of ESPN Inc.
QOTD: Any clod can have facts, but having an opinion is an art!
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