什么叫做倍数关系 倍数关系是什么意思？

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select * from tbl_Articles WHERE ArticleID=80101 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=80101 LIMIT 0,1
select * from tbl_Articles_sphinx where id=80101 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(360222,79992,86105,1100262,358539,1104171,1094757,383508,1093927,365250,1114802,370367,420446,86136,392883,422272,87079,1091705,87070,86939,100387,1091719,363633,1113323,101120,399457,376834,1085532,402019,401504) ORDER BY field (ArticleID,360222,79992,86105,1100262,358539,1104171,1094757,383508,1093927,365250,1114802,370367,420446,86136,392883,422272,87079,1091705,87070,86939,100387,1091719,363633,1113323,101120,399457,376834,1085532,402019,401504)