How to insert data from one database table to another database table in sql 2012

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SQL-Server-2012

Hi to all,
How to insert data from one database table to another database table.
for example:
In db1 :-i have some country table and column is id,name
in db2 :-i have some country table and column in id,name
id is autogenerate value

how to insert db2 data to db1.

above example just for our understanding but my table contain 15 column so how to do that and have one column as autogenerate key

What I have tried:

i need example code how to do.

Posted 21-Feb-16 23:05pm

JOTHI KUMAR Member 10918227

Updated 22-Feb-16 0:14am

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Jawad Ahmed Tanoli · Answer 1 · 2016-02-22T00:14:00

Solution 1

SQL

insert into db1.dbo.country (columnA, ColumnB)
Select columnA, columnB from db2.dbo.country

Posted 22-Feb-16 0:14am

Jawad Ahmed Tanoli

Comments

JOTHI KUMAR Member 10918227 22-Feb-16 6:23am

if have two fields its ok but my table have 25 fields how to do and i have identity key that means primary key . how can i do

Jawad Ahmed Tanoli 22-Feb-16 6:30am

autogenerate key is in both tables ? you want to keep the db2 country table same id in db1 country table or not ?

JOTHI KUMAR Member 10918227 22-Feb-16 6:36am

Actually both database have same table and fields. i need to merge record bcz last month is in one database and this month is in one database so i need to merge two month in one database that means either db1 or db2 that all

Jawad Ahmed Tanoli 22-Feb-16 6:43am

insert into db1.dbo.country
Do not include auto generate column if you want your table to create it for your self
Select ColumnB,ColumnC,,,,,,,,,,,, from db2.dbo.country

Member 13671635 26-Apr-18 7:31am

I have large data of amount have a million records its takes more time in execution please tell me how its fast