负根号9等于多少急说明理由

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select * from tbl_Articles WHERE ArticleID=2366971 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2366971 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2366971 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(428520,1319347,1085528,241282,238896,1092365,1048236,1322226,333351,920477,838128,479556,654645,1293236,1065623,1384198,179028,165569,304527,255233,842300,1093581,1123653,624874,1132545,640698,2794203,782030,897118,1282187) ORDER BY field (ArticleID,428520,1319347,1085528,241282,238896,1092365,1048236,1322226,333351,920477,838128,479556,654645,1293236,1065623,1384198,179028,165569,304527,255233,842300,1093581,1123653,624874,1132545,640698,2794203,782030,897118,1282187)