Update with inner join?

Question

I have two databases:

DB1 and DB2

How to do something like:

update myServer.DB1.dbo.hotels.Name = myServer.DB2.dbo.hotels.N         


        

Answer 1

This should do the trick for you. You were missing the SET and FROM clauses.

UPDATE DB1
SET DB1.Name = DB2.Name 
FROM DB1.dbo.hotels DB1
INNER JOIN DB2.dbo.hotels DB2 
ON DB2.Code = DB1.Code 
WHERE DB2.CountryCoe !=  DB1.CountryCode 

Answer 2

UPDATE  h1
SET     h1.name = h2.name
FROM    myServer.DB1.dbo.hotels h1
JOIN    myServer.DB2.dbo.hotels h2
ON      h2.Code = h1.Code
WHERE   h1.CountryCode <> h2.CountryCode

Answer 3

example

update h1 
set h1.Name = h2.Name
from DB1.dbo.hotels.Name h1
join DB2.dbo.hotels  h2 on h1.Code= h2.Code
where h2.CountryCoe !=  h1.CountryCode