I have an ids range (it defines by startId and stopId). I have a table with some records(every record has an id – primaty key). Now I need to select all ids from specified range that don’t exist in the table. I am using postgres database. Please suggest what options I have to perform such query.
You may look at generate_series() function.
Then use an except clause to get the difference.
select s.a from generate_series(<start>, <stop>) as s(a) except select id from <myTable> where <yourClause> --order by a