如何区分比较和比喻

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select * from tbl_Articles WHERE ArticleID=2654493 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2654493 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2654493 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1114222,410785,1112160,1126470,1073820,1108762,2441781,251469,1075644,2683582,3193972,1093321,1068094,1131015,993145,1118467,3374720,265358,1097667,3436318,402088,1547308,1084333,1065001,1061460,1073302,2517284,355424,1098967,3005621) ORDER BY field (ArticleID,1114222,410785,1112160,1126470,1073820,1108762,2441781,251469,1075644,2683582,3193972,1093321,1068094,1131015,993145,1118467,3374720,265358,1097667,3436318,402088,1547308,1084333,1065001,1061460,1073302,2517284,355424,1098967,3005621)