如何计算PE倍数

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select * from tbl_Articles WHERE ArticleID=569992 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=569992 LIMIT 0,1
select * from tbl_Articles_sphinx where id=569992 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1936475,241265,1066925,1456940,3005184,987892,1070088,2230810,1316170,3090557,3015878,3006471,2786990,1701457,3166889,917776,370039,2245394,1946890,291692,1609567,658847,2775749,191083,2771827,1064085,1284497,1044569,2404075,341992) ORDER BY field (ArticleID,1936475,241265,1066925,1456940,3005184,987892,1070088,2230810,1316170,3090557,3015878,3006471,2786990,1701457,3166889,917776,370039,2245394,1946890,291692,1609567,658847,2775749,191083,2771827,1064085,1284497,1044569,2404075,341992)