Hi everyone!
I have this problem;
I have a layer (vector) i have add a column in the attribute table using "table joins"
i have used this fuction after that i had import a .csv table.
My problem it's that when i deleted the imported table the columns that i have join disappears too!
how can I keep the column and deleted the import table? http://postimg.org/image/n3an15tdj/
(to join the column i have used this method http://www.qgistutorials.com/en/docs/performing_table_joins.html)