Question

I need to update some data from another table..

I want to simply take the data from col1 in table1 to col1 in table2, the rows are at the same position so there aint really any id-comparing thats need to be done..

How can I do this?

-----------------------------------------
Db1.Table1 (Take yearModel from this table to update Table3)
-----------------------------------------
imgid          | int | PK |
yearModel      | int |
-----------------------------------------


-----------------------------------------
Db2.Table2 (Go by this table to update Table3)
-----------------------------------------
imgid          | int | PK |
uploadId       | int | FK (With table3.uploadId) |
------------------------------------------

------------------------------------------
Db2.Table3 (Update this table with the yearModel from table1)
-------------------------------------------
uploadId        | int | PK |
uploadYearModel | int |

Sorry, my database diagaram “thingy” has crashed for some wierd reason.. 🙁
I hope you ge the idea

I should also mention that Table1 is located in another database..which Im not sure if that matters.. but well.. 🙂

Thanks in advance!

Answer 1

If you have a Common Key Column in both tables & this key column is having the same values in both tables (they refernce the same rows in both tables ) then below query should work:

UPDATE  Table1
SET     Column1 = t2.Column1
FROM    Table2 t2 INNER JOIN Table1 t1 ON t2.KeyColumn = t1.KeyColumn

EDIT:

UPDATE Table3 
SET    uploadYearModel = t1.yearModel 
FROM   Table1 t1
       INNER JOIN Table2 t2 ON t2.imgid = t1.imgid
       INNER JOIN Table3 t3 ON t3.uploadId = t2.uploadId