求SQL语句将 A表中的a列，B表中的b列，插入到C表的a,b两列中
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declare @t table（id int identity(1,1),name varchar(20))
insert into @t
select a from A
declare @d table（id int identity(1,1),names varchar(20))
insert into @d
select b from B
insert into C
select A.name,B.names from @t inner join @b on A.id=B.id