最大的两位小数是多少,为什么

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select * from tbl_Articles WHERE ArticleID=790752 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=790752 LIMIT 0,1
select * from tbl_Articles_sphinx where id=790752 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(796873,1139535,705507,1088703,3090660,842669,461875,3523649,540527,1339196,659901,3400828,2543143,837914,382026,1170303,1754784,503885,380641,907948,2356632,706887,3475207,1156422,1005813,693381,2177525,1945791,1121851,1487577) ORDER BY field (ArticleID,796873,1139535,705507,1088703,3090660,842669,461875,3523649,540527,1339196,659901,3400828,2543143,837914,382026,1170303,1754784,503885,380641,907948,2356632,706887,3475207,1156422,1005813,693381,2177525,1945791,1121851,1487577)