Extacting a very large volume of data
Posted: Wed Jul 18, 2007 11:13 pm
Dear All,
I have a monthly job that extracts data from table whose volume is very huge around 300 crore records totally & 60 columns.
I have to extract 15 columns from that table and also have a group by clause in it to find the count of each person who has called more than 3 times.
My present query takes 45 hrs to do this.
Any better idea??
Suggestions welcome.
Kindly help!!!
Thanks in advance!!!
I have a monthly job that extracts data from table whose volume is very huge around 300 crore records totally & 60 columns.
I have to extract 15 columns from that table and also have a group by clause in it to find the count of each person who has called more than 3 times.
My present query takes 45 hrs to do this.
Any better idea??
Suggestions welcome.
Kindly help!!!
Thanks in advance!!!