Display multiple comma separated value into single column output

Here is the data:

Field1      Field2
----------- --------------------
1           A,B,C
2           A
3           D,G

And we need output as following

output
------
A
B
C
A
D
G

Lets create data first.

DECLARE @Fields AS TABLE
(
    Field1 INT,
    Field2 VARCHAR(20)
)

INSERT INTO @Fields VALUES (1,'A,B,C')
INSERT INTO @Fields VALUES (2,'A')
INSERT INTO @Fields VALUES (3,'D,G')

Here is the query for getting expected result.

DECLARE @FieldXml AS XML

DECLARE @v VARCHAR(MAX)

--Creates single row for Field2
SELECT @v = (SELECT ',' + Field2 FROM @Fields FOR XML PATH(''))
--Remove the first comma 
SELECT @v = SUBSTRING(@v, 2, LEN(@v))

--Add the XML tag
SELECT @FieldXml = '<F value="' + REPLACE(@v , ',', '" /><F value="') + '" />'

--List single attribute value
SELECT x.value('@value', 'VARCHAR(1)') AS [output]
FROM @FieldXml.nodes('/F') p(x)