It can be a matter of db mode for usrloc, what it is its value?

I'm currently using db_mode 2.

I just tested the command kamcmd ul.db_users location with db_mode 1, and I encountered a different error in the log:

May 16 11:15:55 ip-10-0-1-63 /usr/sbin/kamailio[29873]: ERROR: db_postgres [km_dbase.c:267]: db_postgres_submit_query(): 0x7f4a0d8e8148 PQsendQuery Error: ERROR:  function count(character varying, character varying) does not exist#012LINE 1: SELECT COUNT(DISTINCT username, domain) FROM location WHERE ...#012               ^#012HINT:  No function matches the given name and argument types. You might need to add explicit type casts.#012 Query: SELECT COUNT(DISTINCT username, domain) FROM location WHERE (UNIX_TIMESTAMP(expires) = 0) OR (expires > NOW())

I believe this is another manifestation of the same issue with PostgreSQL and usrloc.

It seems that the problem lies in the SQL query:

SELECT COUNT(DISTINCT username, domain) FROM location;

After conducting some research, I discovered that PostgreSQL does not support the count function with more than one column.

To achieve the same functionality, we could use the following query instead:

SELECT COUNT(DISTINCT CONCAT(username, '@', domain)) FROM location;


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