分数的含义是什么

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select * from tbl_Articles WHERE ArticleID=3137011 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3137011 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3137011 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(421453,1097001,1096218,469321,1106623,1105185,1096162,453335,2894988,1116329,1113816,1116579,1122434,493821,1087723,536484,1109685,498483,646901,1090068,1107475,1880098,485883,1118511,534814,1095145,1096633,559786,1098681,447261) ORDER BY field (ArticleID,421453,1097001,1096218,469321,1106623,1105185,1096162,453335,2894988,1116329,1113816,1116579,1122434,493821,1087723,536484,1109685,498483,646901,1090068,1107475,1880098,485883,1118511,534814,1095145,1096633,559786,1098681,447261)