如何理解范数的等价性

页面:/news/view-594947/ | 耗时:0.0558 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=594947 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=594947 LIMIT 0,1
select * from tbl_Articles_sphinx where id=594947 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1065749,1067089,1081197,1060755,1090937,1071972,1125249,1080977,1132649,1072831,1080428,1081835,1069505,1044442,1089840,1110195,1110850,1111870,1082201,1080649,1106232,1087911,1085842,1097667,1077490,1113243,1087499,1084779,1110031,1046666) ORDER BY field (ArticleID,1065749,1067089,1081197,1060755,1090937,1071972,1125249,1080977,1132649,1072831,1080428,1081835,1069505,1044442,1089840,1110195,1110850,1111870,1082201,1080649,1106232,1087911,1085842,1097667,1077490,1113243,1087499,1084779,1110031,1046666)