我最好的猜测是，ConcatRelated会对“ DocumFrag”中的每个“标题”进行评估。在应用该函数之前，请选择内部查询中的前10个：
SELECT q.title, ConcatRelated("DOCTEXT","DocumFrag", "title='" & q.title & "'" ) AS result
FROM
(SELECT TOP 10 title FROM DocumFrag) AS q
GROUP BY q.title;
如何提高此查询和VBA的效率？
如何提高此查询和VBA的效率？
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