活跃期延长是指什么?

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select * from tbl_Articles WHERE ArticleID=2280316 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2280316 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2280316 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(3393949,724238,984345,415084,1091406,439754,2568388,2986113,682821,1076037,3365834,490593,1204292,797977,3075282,3497893,2374915,774315,493493,894399,3418856,559554,888142,2849044,2758919,80116,3221806,876382,3440004,2822381) ORDER BY field (ArticleID,3393949,724238,984345,415084,1091406,439754,2568388,2986113,682821,1076037,3365834,490593,1204292,797977,3075282,3497893,2374915,774315,493493,894399,3418856,559554,888142,2849044,2758919,80116,3221806,876382,3440004,2822381)