什么是限牌令请说的简单点

页面:/news/view-2561212/ | 耗时:0.1516 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=2561212 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2561212 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2561212 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(994016,988780,1123655,1087579,1075777,1047767,1085376,1050437,1086338,1071475,1067924,1050301,1066852,1084829,1133273,1110157,1053404,1063135,1078424,1068358,1061518,1070848,1091177,1077026,1108976,1074312,1085906,1328815,1099819,1072591) ORDER BY field (ArticleID,994016,988780,1123655,1087579,1075777,1047767,1085376,1050437,1086338,1071475,1067924,1050301,1066852,1084829,1133273,1110157,1053404,1063135,1078424,1068358,1061518,1070848,1091177,1077026,1108976,1074312,1085906,1328815,1099819,1072591)