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copy from one table to another

Posted on 2008-10-05
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Last Modified: 2010-03-19
I want to copy everything from one table to another.
The tables are identical except that the table that is to be copied to has an identity (incremental) column.
How do I do that?
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Question by:johnkainn
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7 Comments
 
LVL 37

Expert Comment

by:momi_sabag
ID: 22644014
set identity_insert target_table on
insert into target_table
select * from source_table
set identity_insert target_table off
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Author Comment

by:johnkainn
ID: 22644056
I have a target table with an Id column that is identity column. The name of the target table is y_B.
If I try to use the code you sent I get following error:

Explicit value must be specified for identity column in table 'y_B' either when IDENTITY_INSERT is set to ON or when a replication user is inserting into a NOT FOR REPLICATION identity column.


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LVL 37

Expert Comment

by:momi_sabag
ID: 22644058
do you want to generate id in target table or get them from the source table?
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Author Comment

by:johnkainn
ID: 22644862
I want to generate id in target table.
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LVL 37

Accepted Solution

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momi_sabag earned 125 total points
ID: 22644898
ok
so just use
insert into target_table
select * from source_table
0
 
LVL 51

Expert Comment

by:Mark Wills
ID: 22645508
If the only difference between source table and destination table is an additional idenity column in the destination, then you will need to specify the column names...

e.g.  say tbl_destination (id int identity, col1 varchar,col2 int, col3 datetime) and tbl_source (col1 varchar,col2 int, col3 datetime)

then you do...

insert tbl_destination(col1,col2,col3)
select col1,col2,col3
from tbl_source

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LVL 51

Expert Comment

by:Mark Wills
ID: 22645514
Thought I had refreshed before posting. Sorry bout that - please see my posting anyway...
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