CREATE TABLE T2(id int primary key, Context xml)
insert into T2 values
(1,'<root>
<context>
<alfa>
<ul></ul>
<mail>1@1.ru</mail>
</alfa>
<betta>
<ul></ul>
<mail>1@1.ru</mail>
</betta>
</context>
</root>')
select * from T2;
<mail>1@1.ru</mail>