java - 如何解决java中的以下问题？

Question

我在运行查询时遇到以下错误。

org.hibernate.hql.ast.QuerySyntaxException: expecting CLOSE, found 'LIMIT' near line 1, column 194 [from com.claystone.db.Gpsdata where id.mobileunitid = '2090818044' and gpsdate in (select id.gpsdate from com.claystone.db.Gpsdata where id.mobileunitid = '2090818044' ORDER BY id.gpsdate DESC LIMIT 1 )  and gpsstatus='true']

这是我的查询。请给出建议，这个查询有什么错误？

data=session.createQuery[from com.claystone.db.Gpsdata where id.mobileunitid = '2090818044' and gpsdate in (select id.gpsdate from com.claystone.db.Gpsdata where id.mobileunitid = '2090818044' ORDER BY id.gpsdate DESC LIMIT 1 )  and gpsstatus='true']

Answer 1

为什么要使用子查询？就这样做吧:

data=session.createQuery[from com.claystone.db.Gpsdata where id.mobileunitid = '2090818044' and gpsstatus='true' ORDER BY id.gpsdate DESC LIMIT 1]

您可能需要将 LIMIT 1 关闭并在查询中使用 .setMaxResults(1)。