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Posted by: Peter Brawley
Date: December 05, 2020 04:21PM

> Sorry, no idea!

Sure you do. you've been asked for all possible combinations of firstcol and secondcol values in your table, read about cross join, then try substituting your column and table names into ...

select a.firstcol, b.secondcol
from tbl as a
cross join tbl as b
order by firstcol, secondcol;

... it'll give you 25 rows, now all you need to do is suppress the duplicates (hint: read about distinct).

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December 04, 2020 04:38PM
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December 06, 2020 06:39AM
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