Does ORMLITE support SQL EXISTS?

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借酒劲吻你
借酒劲吻你 2021-01-22 15:29

I am trying to query a table as follows

select * from client c
    where EXISTS (select * from visit v where c._id = v.client_id)

Can i do thi

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  •  耶瑟儿~
    2021-01-22 15:45

    Yes you can. Where.exists() has been supported my ORMLite for some time. Here are the [meager] docs:

    http://ormlite.com/docs/exists

    You would do something like the following:

    QueryBuilder visitQb = visitDao.queryBuilder();
    visitQb.where().eq(Visit.CLIENT_ID_FIELD, client.getId());
    QueryBuilder clientQb = clientDao.queryBuilder();
    clientQb.where().exists(visitQb);
    List results = clientQb.query();
    

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