Topic: Oracle Certified Professional Exams (OCP & OCA) >> Need a answer for a Query....
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| Title: Need a answer for a Query.... |
| priya |
Posted: Apr 17, 2007 02:10:43 AM |
Total Post: 39
Joined: Apr, 2007
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TABLE 1 -
CUSTOMER ID ACCNT NUMBER
1 A1
1 B1
1 c1
2 A2
3 A3
3 B3
4 C1
TABLE 2-
ACCNT NUMBER BANK NAME
A1 HSBC
B1 ICICI
C1 HSBC
A2 HSBC
A3 HSBC
B3 ICICI
C1 HSBC
What is the query to print the customer IDs who have accounts in ALL the banks
(IN THIS INSTANCE THE QUERY SHOULD RETURN 1 AND 3)
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 gps |
| Posted: Apr 17, 2007 07:45:49 AM |  |
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Total Post: 38
Joined: May, 2006
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Try this query ...
select customer_id
from (select customer_id,bank_name from table1 a, table2 b
where a.account_no=b.account_no
group by customer_id,bank_name)
group by customer_id having count(*)=
(select count(distinct bank_name) from table2)
Gurwinder
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| priya |
| Posted: Apr 17, 2007 07:56:27 AM | |
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Total Post: 39
Joined: Apr, 2007
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hi,
thanks verymuch..
got it.
priya
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| Time Zone: EDT |
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