二分之根号二是不是分数为什么

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select * from tbl_Articles WHERE ArticleID=1328684 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1328684 LIMIT 0,1
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SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(983947,1068006,1068973,1082936,1131443,1079546,1078873,992503,1085888,1068708,999426,1070474,1074409,1064085,1069083,1078717,1047093,1090699,1070038,1067895,1124007,1060721,993095,1063165,1044745,1044673,1051655,1074198,1087825,1054792) ORDER BY field (ArticleID,983947,1068006,1068973,1082936,1131443,1079546,1078873,992503,1085888,1068708,999426,1070474,1074409,1064085,1069083,1078717,1047093,1090699,1070038,1067895,1124007,1060721,993095,1063165,1044745,1044673,1051655,1074198,1087825,1054792)