如何选择衰减器

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select * from tbl_Articles WHERE ArticleID=1698866 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1698866 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1698866 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2422027,335421,2497836,1129805,221983,1123281,1586532,2036996,2202759,871698,1079426,1358301,2621741,155340,256095,2696577,2170602,903981,1751437,1508873,288937,2480627,890808,2714794,1065393,2584939,1069401,928964,1082822,920809) ORDER BY field (ArticleID,2422027,335421,2497836,1129805,221983,1123281,1586532,2036996,2202759,871698,1079426,1358301,2621741,155340,256095,2696577,2170602,903981,1751437,1508873,288937,2480627,890808,2714794,1065393,2584939,1069401,928964,1082822,920809)