什么叫比的基本性质

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select * from tbl_Articles WHERE ArticleID=3151004 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3151004 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3151004 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(824948,1119281,3406394,3524621,1098882,398367,1119023,1106148,1111354,1049235,2445681,1092408,3306243,1005030,1092373,3311325,1094307,1121122,1106922,100682,1106942,2334176,1083411,635046,1767012,3159514,1103720,1088914,2650372,1112782) ORDER BY field (ArticleID,824948,1119281,3406394,3524621,1098882,398367,1119023,1106148,1111354,1049235,2445681,1092408,3306243,1005030,1092373,3311325,1094307,1121122,1106922,100682,1106942,2334176,1083411,635046,1767012,3159514,1103720,1088914,2650372,1112782)