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if object_id('[tb]') is not null drop table [tb]
create table [tb]([a] varchar(200))
go
insert [tb]
select 'aaaa  bbbb cccc        dddd'
insert [tb]
select 'eeeeee  ffff hhhh        yyyy                '
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select
  rtrim(A.A) as a,B.A2
from (
  select a,convert(xml,'<root><row>'+replace(replace(rtrim(ltrim(a)),' ','</row><row>'),'<row></row>','')+'</row></root>') AS A1
  from [tb]
   ) a  outer apply (select a2=T.C.value('.','nvarchar(100)') from a.a1.nodes('/root/row')T(C)) B
/*
a                                                                           A2
--------------------------------------------------------------------------  --------------------
aaaa  bbbb cccc        dddd                                                 aaaa
aaaa  bbbb cccc        dddd                                   &nb


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