How to extract multiple strings from single rows in SQL Server

Question

I have e.g. the following table data:

id    |    text
--------------------------------------------------------------------------------
1     |  Peter (Peter@         


        

Answer 1

This assumes there are no rogue parentheses and you would need to add some additional replaces in if your text can contain any XML entity characters.

WITH basedata(id, [text])
     AS (SELECT 1, 'Peter (Peter@peter.de) and Marta (marty@gmail.com) are doing fine.'
         UNION ALL
         SELECT 2, 'Nothing special here'
         UNION ALL
         SELECT 3, 'Another email address (me@my.com)'),
     cte(id, t, x)
     AS (SELECT *,
                CAST('' + REPLACE(REPLACE([text],'(',''),')','') + '' AS XML)
         FROM   basedata)
SELECT id,
       a.value('.', 'nvarchar(max)') as address
FROM   cte
       CROSS APPLY x.nodes('//foo/bar') as addresses(a)