linq select distinct

                
                        var _dbLogList = (from d in _context.pu_Synchronize_Log
                              join cd in _context.pu_Synchronize_Child_Log
                              on d.Synchronize_Log_Id equals cd.Synchronize_Log_Id
                              where cd.Mobile_Device_Id == preference.DId && cd.Synchronize_Status == "OPEN"
                             && !d.Is_Deleted && !cd.Is_Deleted
                             select new
                             {
                                 d.Service_Name,
                            }).Distinct().ToList();
                    
                

how to use distinct in linq query in csharp

                        
                                var distValues = objList.Select(o=>o.typeId).Distinct().ToList();
                            
                        

select distinct linq mvc

                        
                                public static IQueryable<ProdType> GetDistinctProdType(
    this IQueryable<ProdInfo> query,
    int categoryId)
{
    return (from p in query
            where p.CatID == categoryId
            select p.Type).Distinct();
}
                            
                        

csharp linq select only unique values from list

                        
                                var uniq = allvalues.GroupBy(x => x.Id).Select(y=>y.First()).Distinct();
                            
                        

query DISTINCT

                        
                                SELECT DISTINCT Column_name FROM table_name;
                            
                        

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