什么是大数据推荐系统

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select * from tbl_Articles WHERE ArticleID=1527771 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1527771 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1527771 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1116669,1094825,983962,1512748,1063315,1071905,1078797,1061598,1093254,1080997,1074184,1095456,1070270,1052151,1093975,1065259,1048610,1057696,1107567,1093655,1065221,1102298,1063329,983947,1054136,1066810,1098465,1086081,1075977,1080114) ORDER BY field (ArticleID,1116669,1094825,983962,1512748,1063315,1071905,1078797,1061598,1093254,1080997,1074184,1095456,1070270,1052151,1093975,1065259,1048610,1057696,1107567,1093655,1065221,1102298,1063329,983947,1054136,1066810,1098465,1086081,1075977,1080114)