Re: [GENERAL] get first and last row in one sql as two columns

[Rob Sargent]

On 09/02/2015 05:14 PM, Tom Smith wrote:

Hi:

I need to get the first and last tow in one sql like below

select first(col1), last(col1) from table order by col1

I saw some posting in wiki with a custom function (or C extention)
to do this.   Is it widely used and reliable?

https://wiki.postgresql.org/wiki/First/last_(aggregate) <https://wiki.postgresql.org/wiki/First/last_%28aggregate%29>

I am wondering why these two functions are not part of postgresql built-in
functions as it has many use cases

Thanks

If you're ordering by col1, does

   select min(col1), max(col1) from table order by col1

not do the trick;