百分数里单位1如何确定

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select * from tbl_Articles WHERE ArticleID=1349083 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1349083 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1349083 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(339392,2595058,250030,1130894,1100905,2982309,3218948,1062985,2358909,1724646,244828,1552694,802538,1053422,1098967,2945859,2301844,1081737,473887,3313565,2347743,1074298,1099373,270125,367022,307217,1075967,1058415,1132159,2142755) ORDER BY field (ArticleID,339392,2595058,250030,1130894,1100905,2982309,3218948,1062985,2358909,1724646,244828,1552694,802538,1053422,1098967,2945859,2301844,1081737,473887,3313565,2347743,1074298,1099373,270125,367022,307217,1075967,1058415,1132159,2142755)