知否知否是什么意思

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select * from tbl_Articles WHERE ArticleID=752749 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=752749 LIMIT 0,1
select * from tbl_Articles_sphinx where id=752749 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(385619,363263,432638,446371,1108211,467542,477994,369135,379758,411573,1086618,393962,432204,469321,1113177,374263,1103471,3135655,2653658,403481,481818,382760,1084541,1108017,462383,399457,1117401,1102586,1680736,472592) ORDER BY field (ArticleID,385619,363263,432638,446371,1108211,467542,477994,369135,379758,411573,1086618,393962,432204,469321,1113177,374263,1103471,3135655,2653658,403481,481818,382760,1084541,1108017,462383,399457,1117401,1102586,1680736,472592)