三关一闭指的是什么

页面:/news/view-99948/ | 耗时:0.6958 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=99948 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=99948 LIMIT 0,1
select * from tbl_Articles_sphinx where id=99948 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1107939,1104009,1127721,1124352,1127513,1127331,1107150,1127549,1123697,1133349,1111116,1120669,1130544,1129885,1127901,1120071,1110822,1113229,1112172,1120683,1123044,1122106,1108081,1103861,1111916,1133301,1125333,1123589,1108043,1120049) ORDER BY field (ArticleID,1107939,1104009,1127721,1124352,1127513,1127331,1107150,1127549,1123697,1133349,1111116,1120669,1130544,1129885,1127901,1120071,1110822,1113229,1112172,1120683,1123044,1122106,1108081,1103861,1111916,1133301,1125333,1123589,1108043,1120049)