Column names in each table must be unique. while copy table data from one table to another in sql server

Question

I have a table Transaction_tbl with these columns:

transactid   Tbarcode     dtime

1            100          2013-04-16 14:15:47.243
2            101          2013-05-10 10:15:47.243
3            102          2014-02-20 02:15:48.000

In this table, transactid is the primary key.

I have one more table KHanger_tbl with these columns:

transactid   Hbarcode
1             21
2             22
3             23

in my KHanger_tbl this transactid is the foregin key

I want to move date range <=2013-12-30 data from Transaction table to another table called Transaction2013.. (i mean data in the 2013)

The same time corresponding Khanger_table data need to move to table called Khanger2013

I am creating a new table while executing query ..

First query

select * into Transaction2013
from Transaction_tbl
where dtime <='2013-12-30'

second query

select * into Khanger2013
from KHanger_tbl 
inner join Transaction_tbl
on Transaction_tbl.transactID=KHanger_tbl.transactid
where Transaction_tbl.dtime <='2013-12-30

but while executing the second query, I get an error:

Column names in each table must be unique. Column name 'transactID' in table 'Khanger2013' is specified more than once.

Answer 1

By using select * you are asking for all columns. As both tables have a transactionid this will then be created twice in the target table, which is not allowed. You need to use something like:

select k.transactid, k.Hbarcode into Khanger2013
 from KHanger_tbl k
inner join Transaction_tbl t
on t.transactid=k.transactid
where t.dtime <='2013-12-30