百分比如何计算

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select * from tbl_Articles WHERE ArticleID=516271 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=516271 LIMIT 0,1
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SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(802981,531031,732573,991609,983558,1147985,1033839,1099746,660748,867221,923283,826599,683946,837461,483056,571377,663246,1047306,482697,996495,920744,929956,967596,677580,448699,1106596,840907,421563,810659,1021827) ORDER BY field (ArticleID,802981,531031,732573,991609,983558,1147985,1033839,1099746,660748,867221,923283,826599,683946,837461,483056,571377,663246,1047306,482697,996495,920744,929956,967596,677580,448699,1106596,840907,421563,810659,1021827)