活用现象是啥

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select * from tbl_Articles WHERE ArticleID=1077156 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1077156 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1077156 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(337672,1111384,113598,2289649,110345,120022,120551,113499,107372,2745859,1505016,118689,115124,118916,110491,254197,1125955,285469,1066442,2922338,1325993,117891,119598,3022432,118034,2215016,118836,1078354,113744,1099075) ORDER BY field (ArticleID,337672,1111384,113598,2289649,110345,120022,120551,113499,107372,2745859,1505016,118689,115124,118916,110491,254197,1125955,285469,1066442,2922338,1325993,117891,119598,3022432,118034,2215016,118836,1078354,113744,1099075)