什么是夜间流量

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select * from tbl_Articles WHERE ArticleID=780219 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=780219 LIMIT 0,1
select * from tbl_Articles_sphinx where id=780219 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1090032,1074799,1077960,1041287,1080663,1095319,1087439,1048110,1086698,1086270,1078194,1086446,1062716,1081241,1088431,1076169,1068268,1048610,1061928,1063213,1069253,1080291,1068334,1045946,1060645,1077976,1091843,1066498,1049548,1083971) ORDER BY field (ArticleID,1090032,1074799,1077960,1041287,1080663,1095319,1087439,1048110,1086698,1086270,1078194,1086446,1062716,1081241,1088431,1076169,1068268,1048610,1061928,1063213,1069253,1080291,1068334,1045946,1060645,1077976,1091843,1066498,1049548,1083971)