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有人可以解释我为什么这个子查询返回“这个子查询最多可以返回一条记录”。MS ACCESS Subselect“子查询最多可以返回一条记录”
(SELECT TOP 1 J.observacao " +
" FROM tblPendenciaHistorico J " +
" INNER JOIN tblPendenciaPendenciaHistorico JH " +
" ON J.historicoId = JH.pendenciaHistoricoId " +
" WHERE JH.pendenciaId = P.pendenciaId " +
" ORDER BY J.data DESC) AS historicoStatus"
Tks litelite我加了pk。 – Denis