采用??中断方式的作用是什么?

页面:/news/view-3372145/ | 耗时:0.8677 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=3372145 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3372145 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3372145 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2990555,2049860,1215398,2820623,856644,1192772,413242,833538,701069,1401633,3420962,2876642,2384409,885649,519108,859392,3452605,2865101,1031964,3427973,546934,665448,1133507,625986,3382652,1753450,853939,3136524,396276,636435) ORDER BY field (ArticleID,2990555,2049860,1215398,2820623,856644,1192772,413242,833538,701069,1401633,3420962,2876642,2384409,885649,519108,859392,3452605,2865101,1031964,3427973,546934,665448,1133507,625986,3382652,1753450,853939,3136524,396276,636435)