Update entire column possible?

Question

Can you use entire columns from one table to update a column in another?
UPDATE Products. quantity SET Stock.qty WHERE Product.id = Stock.id ;

Answer 1

That query is unfortunately wrong, you gave instruction to update Products table but at the same time gave a targeted field from Stock table, and there is no new value following the SET Stock.Qty. I might have misunderstood your point, but AFAIK it's a faulty SQL command.
Can you give a little more information about what you want to achieve here, and probably, the tables structure so people here can offer suggestions or maybe, a solution : )

Answer 2

Well that's tricky, it's between databases rather than tables now isn't it? I'm afraid it would take more than just a simple update statement to accomplish that.
What steps have you tried anyway? and how did it go? I can try to help you find a solution maybe (no guarantee) in the meantime, you might want to look for a way to import the table from the old database into the new one.

Answer 3

From which table to which table? is this an inventory data? how is the system flow if you don't mind me asking.

Answer 4

want to basically copy quantity amounts from one table to another

Answer 5

k its just like moving the data from a old database to a new one that has the rest of the information already except quantity