source destination distance chennai bangalore 500 bangalore chennai 500 hyd

source destination distance
chennai bangalore 500
bangalore chennai 500
hyd delhi 1000
delhi hyd 1000
bangalore hyd 800

Here chennai to bangalore and bangalore to chennai is same distance. and hyd and delhi also same criteria.
Based on the distance i want to display only one row using sql query?

Question Posted / hari

4 Answers
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source destination distance chennai bangalore 500 bangalore chennai 500 hyd delhi 1000..

Answer / nihar meher

select distinct greatest(source,destination),least(source,destination) from tablename;

Is This Answer Correct ?

3 Yes

1 No

source destination distance chennai bangalore 500 bangalore chennai 500 hyd delhi 1000..

Answer / ajitnayak

select distinct source,destination,distance from dist_tab where source > destination
minus
select distinct source,destination,distance from dist_tab where source < destination

Is This Answer Correct ?

0 Yes

0 No

source destination distance chennai bangalore 500 bangalore chennai 500 hyd delhi 1000..

Answer / sushma ajay

select source, destination, distance from(
select source,destination,lag(source) over (order by distance) oldsrc,distance
from traveldist)
where nvl(destination,'@') <> nvl(oldsrc,'@');

Is This Answer Correct ?

5 Yes

6 No

source destination distance chennai bangalore 500 bangalore chennai 500 hyd delhi 1000..

Answer / deepak

select source, destination, distance from Distance_rcd where source>destination
union select destination, source, distance from Distance_rcd where source<destination

Is This Answer Correct ?

1 Yes

2 No

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