东道主的东道指的是什么

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select * from tbl_Articles WHERE ArticleID=386999 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=386999 LIMIT 0,1
select * from tbl_Articles_sphinx where id=386999 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(822596,750250,1965946,815924,1048595,951948,1727355,791904,1529265,539507,1206460,698814,1316913,1921948,646907,424302,1014778,2135294,1212396,715800,1539132,603720,386011,1336335,1213221,1973472,1497751,2179061,792689,430120) ORDER BY field (ArticleID,822596,750250,1965946,815924,1048595,951948,1727355,791904,1529265,539507,1206460,698814,1316913,1921948,646907,424302,1014778,2135294,1212396,715800,1539132,603720,386011,1336335,1213221,1973472,1497751,2179061,792689,430120)