How to update data in one table from corresponding data in another table in SQL Server 2005

Question

I have two tables in different databases on the same database server.

Both the databases have the same structure, but different data. Database1 (Test1) is the latest

Answer 1

 UPDATE Employee SET Empid=emp3.empid 
 FROM EMP_Employee AS emp3
 WHERE Employee.Empid=emp3.empid

Answer 2

If the two databases are on the same server, you should be able to create a SQL statement something like this:

UPDATE Test1.dbo.Employee
SET DeptID = emp2.DeptID
FROM Test2.dbo.Employee as 'emp2'
WHERE
   Test1.dbo.Employee.EmployeeID = emp2.EmployeeID

From your post, I'm not quite clear whether you want to update Test1.dbo.Employee with the values from Test2.dbo.Employee (that's what my query does), or the other way around (since you mention the db on Test1 was the new table......)

Answer 3

Try a query like

INSERT INTO NEW_TABLENAME SELECT * FROM OLD_TABLENAME;

Answer 4

update test1 t1, test2 t2
set t2.deptid = t1.deptid
where t2.employeeid = t1.employeeid

you can not use from keyword for the mysql

Answer 5

use test1

insert into employee(deptid) select deptid from test2.dbo.employee

Answer 6

update t2
set t2.deptid = t1.deptid
from test1 t1, test2 t2
where t2.employeeid = t1.employeeid