t是什么单位

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select * from tbl_Articles WHERE ArticleID=3294898 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3294898 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3294898 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(380915,1571995,3382652,723661,1913851,3207678,82409,1016720,1144983,495653,461515,893101,1450901,1435300,560701,384529,1024492,1092655,1806220,414472,947599,451226,1724672,882946,2487150,802777,678760,3458345,3150363,624609) ORDER BY field (ArticleID,380915,1571995,3382652,723661,1913851,3207678,82409,1016720,1144983,495653,461515,893101,1450901,1435300,560701,384529,1024492,1092655,1806220,414472,947599,451226,1724672,882946,2487150,802777,678760,3458345,3150363,624609)