二分之负一是否等于负二分之一

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select * from tbl_Articles WHERE ArticleID=592008 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=592008 LIMIT 0,1
select * from tbl_Articles_sphinx where id=592008 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(112006,178922,464031,454591,1129269,1275376,3430220,326120,1090801,1952522,1123032,2960136,1131841,1922137,1086414,135171,2765969,2129355,1079888,1617792,1439706,157409,1127919,157487,2330741,1085490,1084865,1129651,334767,228864) ORDER BY field (ArticleID,112006,178922,464031,454591,1129269,1275376,3430220,326120,1090801,1952522,1123032,2960136,1131841,1922137,1086414,135171,2765969,2129355,1079888,1617792,1439706,157409,1127919,157487,2330741,1085490,1084865,1129651,334767,228864)