select a.name FROM syscolumns a inner join sysobjects b on a.id=b.id and b.xtype='U' and b.name<>'dtproperties' where exists(SELECT 1 FROM sysobjects where xtype='PK' and name in ( SELECT name FROM sysindexes WHERE indid in( SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid ))) and b.name='"+ tableName +"'
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