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select  A,B,C from table1
union
select  A,B,C from table2
order by A, C asc
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  A        B          C
  001      Öлª        1
  001      ÈËÃñ        2
  001      ¹²ºÍ¹ú      3
  002      °ÂÁÖ        1
  002      Æ¥¿Ë        2

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A            B             
001      ÖйúÈËÃñ¹²ºÍ¹ú
002      °ÂÁÖÆ¥¿Ë
SQL code:
/*
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id value
----- ------
1 aa
1 bb
2 aaa
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2 ccc
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1 aa,bb
2 aaa,bbb,ccc
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create table tb(id int, value varchar(10))
inse


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