实数包括负数吗

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select * from tbl_Articles WHERE ArticleID=444386 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=444386 LIMIT 0,1
select * from tbl_Articles_sphinx where id=444386 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(683225,1146791,1026922,737055,476887,1116605,578968,498172,1130984,86648,712459,698004,948098,987059,1067808,1116764,876889,999567,954520,587643,864382,754002,423203,583794,1027812,919382,833423,915338,673208,1119477) ORDER BY field (ArticleID,683225,1146791,1026922,737055,476887,1116605,578968,498172,1130984,86648,712459,698004,948098,987059,1067808,1116764,876889,999567,954520,587643,864382,754002,423203,583794,1027812,919382,833423,915338,673208,1119477)