title: How to make a table share a sequence with another table in postgresql?
body: <p>Basically I have a table1 with unique ids of features for a city, now I got a table2 for features for that country.</p>
  
  <p>I need to create new ids for the country table (these need to share the same sequence as the city, so that the ids match when cross referencing tables)</p>
  
  <p>How to make table2 have the same ids as table1 within that city and then new ids for features elsewhere? Essentially sharing the sequence</p>
  
  <p>Edit: the tables are already created, how can i update table2</p>