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how to return email id if it contains dell.com otherwise any one email in the group


how to return email id if it contains dell.com otherwise any one email in the group

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asita
asita
SSChasing Mays
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if an email contains %dell.com% then return it otherwise max(email) / min(email) just one
please help me,

DDL
create table #onner (acctno int, email_id varchar(30))

insert into #onner values(1,'king@dell.com')
insert into #onner values (1,'siller@dell.com')
insert into #onner values (1,'villa@billo.com')

insert into #onner values (2,'aillow@dell.com')
insert into #onner values (2,'king@tcs.com')

insert into #onner values (3,'laxmg@dell.com')


insert into #onner values (4,'abc@bb.com')
insert into #onner values (4,'zyx@dd.com')
insert into #onner values (4,'WWW@xx.com')
insert into #onner values (4,'ZAS@vonage.com')

expected results

acctno Email
1 siller@dell.com (any dell.com if exist more than once)
2 aillow@dell.com
3 laxmg@dell.com
4 zyx@dd.com (any one doesn't matter since there is no email contains dell.com)


Thank you very much in advance
asitti
asita
asita
SSChasing Mays
SSChasing Mays (612 reputation)SSChasing Mays (612 reputation)SSChasing Mays (612 reputation)SSChasing Mays (612 reputation)SSChasing Mays (612 reputation)SSChasing Mays (612 reputation)SSChasing Mays (612 reputation)SSChasing Mays (612 reputation)

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Points: 612 Visits: 335
Could somebody please help me

Thank you in advance
asitti
Mark Cowne
Mark Cowne
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WITH CTE AS (
SELECT acctno , email_id,
ROW_NUMBER() OVER(PARTITION BY acctno ORDER BY CASE WHEN email_id LIKE '%dell.com%' THEN 0 ELSE 1 END, email_id) AS rn
FROM #onner)
SELECT acctno , email_id
FROM CTE
WHERE rn=1
ORDER BY acctno;



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asita
asita
SSChasing Mays
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is it something can be done in sql, or do we need to do step by step process for this


i am trying hard but no use, could somebody help me please
Sean Lange
Sean Lange
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asita (7/23/2013)
is it something can be done in sql, or do we need to do step by step process for this


i am trying hard but no use, could somebody help me please


What is wrong with example Mark provided? It does exactly what you said it needs to do.

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asita
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SSChasing Mays
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Mark Thank you very much for your example

it worked very well for me

i greatful to you,
aaron.reese
aaron.reese
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@ asita,

Do you understnad what Marks code does. If not you need to have it explained; don't just use it if you can't replicate it.
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