怎么判断右前头位置

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select * from tbl_Articles WHERE ArticleID=1104410 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1104410 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1104410 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(563928,544790,590784,490594,1321909,423077,599547,392439,557142,477703,474416,462219,2041964,627144,3320004,384209,417452,409621,448945,487102,3369415,493875,573661,552223,882790,386860,512448,583468,595148,638214) ORDER BY field (ArticleID,563928,544790,590784,490594,1321909,423077,599547,392439,557142,477703,474416,462219,2041964,627144,3320004,384209,417452,409621,448945,487102,3369415,493875,573661,552223,882790,386860,512448,583468,595148,638214)