tan-1等于多少度

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select * from tbl_Articles WHERE ArticleID=2187136 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2187136 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2187136 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(534012,1123398,857471,3186297,3223550,3260438,2752370,2979566,3048192,2952816,164811,129362,3088406,2442179,2048911,112476,3151293,600373,166893,1122010,3214594,2479227,672753,1875526,1118599,2952065,1051803,2494833,525373,2514677) ORDER BY field (ArticleID,534012,1123398,857471,3186297,3223550,3260438,2752370,2979566,3048192,2952816,164811,129362,3088406,2442179,2048911,112476,3151293,600373,166893,1122010,3214594,2479227,672753,1875526,1118599,2952065,1051803,2494833,525373,2514677)