定语从句中as和which的区别

页面:/news/view-3439493/ | 耗时:1.0084 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=3439493 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3439493 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3439493 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1227100,943540,1085552,1099723,1086923,679216,1279759,416381,683255,2798768,1047900,1228559,415746,712705,436266,1122579,826135,714267,798518,3350315,1106414,1088528,3505785,384087,1087769,1007588,1104739,1234959,1088914,535763) ORDER BY field (ArticleID,1227100,943540,1085552,1099723,1086923,679216,1279759,416381,683255,2798768,1047900,1228559,415746,712705,436266,1122579,826135,714267,798518,3350315,1106414,1088528,3505785,384087,1087769,1007588,1104739,1234959,1088914,535763)