关系运算包括哪两种基本类型

页面:/news/view-3209468/ | 耗时:0.8870 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=3209468 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3209468 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3209468 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(165909,1304243,1943559,946909,1376846,2242084,3244761,2132046,1133393,2502440,1275960,2728943,2511329,3029842,3225592,1060355,407421,3078804,1085750,2678833,3094035,1569075,3251159,1845590,2563573,3369302,524253,3224616,2916816,1313499) ORDER BY field (ArticleID,165909,1304243,1943559,946909,1376846,2242084,3244761,2132046,1133393,2502440,1275960,2728943,2511329,3029842,3225592,1060355,407421,3078804,1085750,2678833,3094035,1569075,3251159,1845590,2563573,3369302,524253,3224616,2916816,1313499)