Answer / kart

select max(col1) col1,max(col2) col2,max(col3) col3
from table;


col1 col2 col3
dinesh suresh prkaesh

Answer / sivanagaraju

SELECT DISTINCT((SELECT COL1 FROM COLL WHERE COL1<>'NULL')),(SELECT COL2 FROM COLL WHERE COL2<>'NULL'),(SELECT COL3 FROM COLL WHERE COL3<>'NULL')
FROM COLL

Answer / sivanagaraju

SELECT C1.COL1,C2.COL2,C3.COL3
FROM COLL C1,(SELECT COL2 FROM COLL WHERE COL2 <>'NULL') C2,
(SELECT COL3 FROM COLL WHERE COL3<>'NULL') C3
WHERE C1.COL1<>'NULL';

Answer / ajitnayak

select distinct col1 from samp
where col1 is not null
union all
select distinct col2 from samp
where col2 is not null

Answer / sivanagaraju

SELECT C1.COL1,C2.COL2,C3.COL3
FROM (SELECT COL1 FROM COLL WHERE COL1 <>'NULL') C1,
(SELECT COL2 FROM COLL WHERE COL2 <>'NULL') C2,
(SELECT COL3 FROM COLL WHERE COL3<>'NULL') C3
WHERE C1.COL1 <>'NULL' AND C2.COL2<>'NULL';

Answer / apsar

select distinct((select col1 from z1 where no is not null))col1,(select col2 from z1 where sal is not null)col2,select col3 from z1 where col is not null) from z1
Hint:z1 is Table Name

What is the difference between mdf and ndf files?

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