This week's book giveaways are in the Refactoring and Agile forums.
We're giving away four copies each of Re-engineering Legacy Software and Docker in Action and have the authors on-line!
See this thread and this one for details.
Win a copy of Re-engineering Legacy Software this week in the Refactoring forum
or Docker in Action in the Agile forum!
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SqlHelp

 
Anonymous
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Dno Status
10 null
10 aa
20 null
20 bb
20 cc
30 null

Display REcord that has a null status but has only one record.

output 30 null
 
Jeanne Boyarsky
author & internet detective
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Eclipse IDE Java VI Editor
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Shan,
You need to use a subquery. It is something like this:

select * from table t1
where t1.status is null and 1 =
(select count(*) from table t2 where t1.dno = t2.dno)
[ October 22, 2004: Message edited by: Jeanne Boyarsky ]
 
Anonymous
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thanx
 
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