sql - Why order of the result varies on using extra brackets in select query -

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select distinct (upper(cd)) table end_date > '08-12-2013'

and

select distinct upper(cd) table end_date > '08-12-2013'

the results of both queries same order varies. there explanation ?

as understand there no default 'order' of results unless order clause specified.

this may dependent on rdbms afaik standard sql.


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