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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) I am wondering why these two functions are not part of postgresql built-in functions as it has many use cases ThanksIf you're ordering by col1, does select min(col1), max(col1) from table order by col1not do the trick;
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) I am wondering why these two functions are not part of postgresql built-in functions as it has many use cases Thanks
select min(col1), max(col1) from table order by col1
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