arctanx等于什么

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select * from tbl_Articles WHERE ArticleID=2332171 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2332171 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2332171 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(394122,389903,398241,86252,375402,1304635,86785,100500,1118442,358539,398367,1105922,392821,379934,1104637,100503,1086618,391827,1110408,1112893,372554,1097945,100857,395357,1098681,1115209,365228,393848,360518,363143) ORDER BY field (ArticleID,394122,389903,398241,86252,375402,1304635,86785,100500,1118442,358539,398367,1105922,392821,379934,1104637,100503,1086618,391827,1110408,1112893,372554,1097945,100857,395357,1098681,1115209,365228,393848,360518,363143)