6个负数相乘结果是负数还是正数

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select * from tbl_Articles WHERE ArticleID=1499864 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1499864 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1499864 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1091394,1081699,1086122,1082451,1063619,1063315,1095319,1066812,1041729,1093410,1052287,1091645,1085858,1009146,1078286,1056832,1069739,1079063,1067327,1075975,2390057,1096256,1050369,1093397,1045659,1120647,994629,1076025,1070764,1080759) ORDER BY field (ArticleID,1091394,1081699,1086122,1082451,1063619,1063315,1095319,1066812,1041729,1093410,1052287,1091645,1085858,1009146,1078286,1056832,1069739,1079063,1067327,1075975,2390057,1096256,1050369,1093397,1045659,1120647,994629,1076025,1070764,1080759)