Topic: SQL*Plus and PL/SQL >> How to get rows that r not common in two tables
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| Title: How to get rows that r not common in two tables |
| Irfan |
Posted: Apr 02, 2008 02:10:54 AM |
Total Post: 29
Joined: Nov, 2005
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hi ,
I have two tables report and report_old having same table structure.Data in both is different.Some rows are common in both while others are different.
MSISDN NUMBER,
EXPIRY_DATE DATE,
VAL_BKT VARCHAR2(4000),
ACCT_BALANCE NUMBER,
BAL_BKT VARCHAR2(4000)
I want to get to get all the msisdn in report table that are not in the report_old table.I use below query for that but its taking long time execute.
create table report_ins
as
(select *From report
where msisdn not in (select msisdn from report_old));
Both the table contain more than 360000 rows of data .
Plz help.
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 Murtuja |
| Posted: Apr 02, 2008 03:40:45 AM |  |
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Total Post: 857
Joined: Jan, 2006
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Hi Irfan,
Try this query
select * from report r1 where not exists (select r2.msisdn from report_old r2 where r1.msisdn=r2.msisdn)
and tell me whether it makes any difference in execution time.
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| Irfan |
| Posted: Apr 02, 2008 04:00:23 AM | |
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Total Post: 29
Joined: Nov, 2005
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hi Murtuja,
Thanks execution time has greatly reduced..
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