哪种文献属于一次文献

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select * from tbl_Articles WHERE ArticleID=1818191 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1818191 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1818191 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(3063135,1128053,116798,1103497,2027259,2569733,520890,1833568,2076620,1106938,1126636,173690,1074846,1079135,613195,1126780,1060817,1114868,1275499,232059,1305143,1719285,110899,204114,1082309,184021,1131661,208136,1114338,117372) ORDER BY field (ArticleID,3063135,1128053,116798,1103497,2027259,2569733,520890,1833568,2076620,1106938,1126636,173690,1074846,1079135,613195,1126780,1060817,1114868,1275499,232059,1305143,1719285,110899,204114,1082309,184021,1131661,208136,1114338,117372)