一毫秒是多少秒

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select * from tbl_Articles WHERE ArticleID=502227 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=502227 LIMIT 0,1
select * from tbl_Articles_sphinx where id=502227 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1074506,1077026,1073385,1082469,1063619,1089662,1053786,1065423,1072903,1081699,1132817,1079942,1073025,1065765,1054392,997282,1077104,1086138,1128565,1080695,1071259,1090699,1298135,1051283,1077056,1056746,1086414,1055718,1083249,990830) ORDER BY field (ArticleID,1074506,1077026,1073385,1082469,1063619,1089662,1053786,1065423,1072903,1081699,1132817,1079942,1073025,1065765,1054392,997282,1077104,1086138,1128565,1080695,1071259,1090699,1298135,1051283,1077056,1056746,1086414,1055718,1083249,990830)