--新建#a
select *
into #a
from (
select 1 a ,'a' b union all
select 2 ,'b' union all
select 3 ,'c' union all
select 4 ,'d' )a

--新建#b
select *
into #b
from (
select 5 a ,'a' b union all
select 6 ,'b' union all
select 7 ,'c' union all
select 8 ,'d' )a

--查询#a
select * from #a
--result:
a           b
----------- ----
1           a
2           b
3           c
4           d

(4 行受影响)

--查询#b
select * from #b
--result:
a           b
----------- ----
5           a
6           b
7           c
8           d

(4 行受影响)


--插入#a中a字段
insert into #a 
select a,'' b from #b

(4 行受影响)

--查询表#a
select * from #a
--result:
a           b
----------- ----
5           
6           
7           
8           
1           a
2           b
3           c
4           d

(8 行受影响)

------解决方案--------------------
insert b (column1) select column1 from a

------解决方案--------------------
SQL code
INSERT INTO TB_A(COLUMN_NAME)
SELECT COLUMN_NAME FROM TB_B