Re: [SQL] Get the max(value1, value2, value3) from a table

[Emi Lu]

select max(col1) from table
union all
select max(col2) from table
union all
select max(col3) from table
No, this is not what I prefer; it makes complicate query.



Would the following work also?

SELECT MAX( GREATEST( col1, col2, col3 ) )
  FROM TABLE;

I would prefer this func. Unfortunately, the current version I have 
8.02(http://www.postgresql.org/docs/8.0/static/functions-conditional.html) 
does not support this func I am afraid :(

Thanks !
Ly.

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