SQL Server convert select a column and convert it to a string

Question

Is it possible to write a statement that selects a column from a table and converts the results to a string?

Ideally I would want to have comma separated values.

Answer 1

ALTER PROCEDURE [dbo].[spConvertir_CampoACadena]( @nomb_tabla   varchar(30),
                          @campo_tabla  varchar(30),
                          @delimitador  varchar(5),
                          @respuesta    varchar(max) OUTPUT
)
AS
DECLARE @query      varchar(1000),
    @cadena     varchar(500)
BEGIN
  SET @query = 'SELECT @cadena  = COALESCE(@cadena + '''+ @delimitador +''', '+ '''''' +') + '+ @campo_tabla + ' FROM '+@nomb_tabla
  --select @query
  EXEC(@query)
  SET @respuesta = @cadena  
END