为什么0乘以任何数都等于0

页面:/news/view-682868/ | 耗时:0.1634 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=682868 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=682868 LIMIT 0,1
select * from tbl_Articles_sphinx where id=682868 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2809580,355881,1788608,299637,1097309,816882,1275697,1350573,1072673,2757512,940064,1126506,3007705,235129,283219,1342182,2737726,201694,220155,167843,296335,245793,2521528,1130314,226789,415901,1068824,2592946,1916298,1791035) ORDER BY field (ArticleID,2809580,355881,1788608,299637,1097309,816882,1275697,1350573,1072673,2757512,940064,1126506,3007705,235129,283219,1342182,2737726,201694,220155,167843,296335,245793,2521528,1130314,226789,415901,1068824,2592946,1916298,1791035)