30赫兹等于多少秒怎么计算

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select * from tbl_Articles WHERE ArticleID=1626087 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1626087 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1626087 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1128579,1121728,1071481,1066292,1117566,1088822,1127441,1056734,1118042,1113536,1109132,1074328,1062774,1060355,1125506,1075602,1090108,1119900,1071641,1108612,1102144,1117369,1056160,1086370,1081151,1067563,1112298,1067939,1126342,1128908) ORDER BY field (ArticleID,1128579,1121728,1071481,1066292,1117566,1088822,1127441,1056734,1118042,1113536,1109132,1074328,1062774,1060355,1125506,1075602,1090108,1119900,1071641,1108612,1102144,1117369,1056160,1086370,1081151,1067563,1112298,1067939,1126342,1128908)