Sql Function Return varchar

Sql Function Return varcharCREATE FUNCTION SchemaName.GetValuesCommaSeparated(   @Id int)RETURNS varchar(100) -- or whatever length you needASBEGIN   declare @values as varchar(100)declare @result as varchar(100) ='' DECLARE cursorValues CURSOR FOR       select T.ColumnName from SchemaName.TableName T  where T.ID = @Id --OPEN CURSOR. OPEN cursorValues  --FETCH THE RECORD INTO THE VARIABLES. FETCH NEXT FROM cursorValues INTO @values 
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