计算机为什么能那么快算出算数

页面:/news/view-1439999/ | 耗时:0.8501 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=1439999 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1439999 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1439999 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1103967,1123217,1081083,1133143,1068494,1130742,1123495,2549085,1072505,3074759,1109565,1082986,1131237,1061620,226147,1097711,1124316,1132123,1115307,1116129,1094973,1806436,1065431,1109677,276562,1079355,1093296,1089718,1056976,1115995) ORDER BY field (ArticleID,1103967,1123217,1081083,1133143,1068494,1130742,1123495,2549085,1072505,3074759,1109565,1082986,1131237,1061620,226147,1097711,1124316,1132123,1115307,1116129,1094973,1806436,1065431,1109677,276562,1079355,1093296,1089718,1056976,1115995)