如何找出低于平均销量的商品呢

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select * from tbl_Articles WHERE ArticleID=1445001 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1445001 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1445001 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1041559,1110606,1086408,1051135,1088878,1087485,1050623,1106647,1060817,1074819,1086420,1096993,1058415,1096338,1090909,1064977,1097815,1102814,1077104,1060391,1087912,1112266,1066914,1081835,1100527,1069729,1048560,1107386,1055081,1095646) ORDER BY field (ArticleID,1041559,1110606,1086408,1051135,1088878,1087485,1050623,1106647,1060817,1074819,1086420,1096993,1058415,1096338,1090909,1064977,1097815,1102814,1077104,1060391,1087912,1112266,1066914,1081835,1100527,1069729,1048560,1107386,1055081,1095646)