I've created a table and then realised I made a mistake. SSMS wouldn't let me update the table without recreating it, so I've deleted the table and then tried to create it again.
It won't let me do this, and I get an error dialog
Table 'dbo.Foo' already exists.
So I try to delete it again:
drop table dbo.Foo
Cannot drop the table 'dbo.Foo', because it does not exist or you do not have permission.
Refreshing the IntelliSense cache does not help.
Closing and restarting SSMS seems to be the only way to get rid of the error. After doing so, I can again successfully create the table.
Create the Table with any other name and then rename it works fine. Server refresh did not work for me. You can try to restart Management Studios though.
I was having the same problem. Right-click on your server connection and select 'Refresh'. I did this and was able to save the recreated table without restarting SSMS.
To change this, on the Tools menu, click Options, expand Designers, and then click Table and Database Designers. Select or clear the Prevent saving changes that require the table to be re-created check box.
I found that you just need to close all the 'delete's table' TAB from SSMS and it's done
Make sure that you have no non-saved table changes (better to close all tabulators and try it again)
Right-click on the Server, click on Refresh and try again! Worked like a charm for me. Hope the same works for you as well.
来源：https://stackoverflow.com/questions/19702699/how-can-i-resolve-the-table-dbo-foo-already-exists-error-when-the-table-doe