占比怎么算计算公式

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select * from tbl_Articles_data WHERE ArticleID=3122852 LIMIT 0,1
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SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(437948,458823,100915,2697053,470821,1052528,394502,1120978,1137094,431563,1097803,488605,409375,617579,3456544,1090020,1510763,100483,424888,489749,482821,382572,1062007,2388010,3493048,421515,1128190,451182,449471,483766) ORDER BY field (ArticleID,437948,458823,100915,2697053,470821,1052528,394502,1120978,1137094,431563,1097803,488605,409375,617579,3456544,1090020,1510763,100483,424888,489749,482821,382572,1062007,2388010,3493048,421515,1128190,451182,449471,483766)