Simplify distinct usage in API #303

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timowest opened this Issue Nov 29, 2012 · 5 comments

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@timowest
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countDistinct, iterateDistinct, listDistinct and listDistinctResults will be deprecated in Querydsl 3.0 and removed at a later time. This is because the same effect can be achieved with distinct() + count/iterate/list/listResults. This usage is more in line with other result modifiers such as limit, offset and orderBy.

As an example the following query

query.from(...).listDistinct(...)

can then be expressed as

query.from(...).distinct().list(...)
@netwein
netwein commented Jan 10, 2013

If the listDistinctResults will be removed how the funtionality of select distinct on specific field with pagination can be accomplished? Today the search result also calculates the total rows number on the distinct field

@timowest
Member

listDistinctResults(...) will become distinct().listResults(...)

@timowest
Member

Released in 3.0.0.BETA1

@timowest timowest closed this Jan 13, 2013
@timowest timowest added this to the 3.0.0 milestone Apr 14, 2014
@hamavaro

How Select DISTINCT on specific field can be done in querydsl 4.0.2 ?
Thanks.

@danielhiguerasgoold

@hamavaro I think you are looking for the GROUP BY clause.

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