关系运算的结果为什么或什么

页面:/news/view-3352826/ | 耗时:0.3044 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=3352826 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3352826 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3352826 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1049440,1055361,1081699,1450002,1014587,1055678,1069677,1064613,1131479,1054832,1073515,1050395,1048280,1069059,1122096,1069159,1068782,1104629,1123793,994016,1065469,1048360,1067935,1062424,1047083,1059016,1915094,1057595,1044649,1099583) ORDER BY field (ArticleID,1049440,1055361,1081699,1450002,1014587,1055678,1069677,1064613,1131479,1054832,1073515,1050395,1048280,1069059,1122096,1069159,1068782,1104629,1123793,994016,1065469,1048360,1067935,1062424,1047083,1059016,1915094,1057595,1044649,1099583)