为什么负一减一等于负2呢

页面:/news/view-1352172/ | 耗时:0.9444 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=1352172 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1352172 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1352172 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1117920,2863527,183919,239437,3431206,987401,1465035,1069956,1116703,1123034,1095063,3347035,2676605,3005935,1978504,1085514,1304848,1131675,1089838,1126524,1083227,1102712,3306784,2852333,145445,2151096,188193,1050597,1113556,2693296) ORDER BY field (ArticleID,1117920,2863527,183919,239437,3431206,987401,1465035,1069956,1116703,1123034,1095063,3347035,2676605,3005935,1978504,1085514,1304848,1131675,1089838,1126524,1083227,1102712,3306784,2852333,145445,2151096,188193,1050597,1113556,2693296)