set citus.log_remote_commands = true;
set citus.grep_remote_commands = '%ALTER DATABASE%';
--since ALLOW_CONNECTIONS alter option should be executed in a different database
-- and since we don't have a multiple database support for now,
-- this statement will get error
alter database regression ALLOW_CONNECTIONS false;
ERROR:  ALLOW_CONNECTIONS is not supported
DO $$
declare
    v_connlimit_initial numeric;
    v_connlimit_fetched int;
begin
    select datconnlimit into v_connlimit_initial from pg_database where datname = 'regression';
    alter database regression with CONNECTION LIMIT 100;
    select datconnlimit into v_connlimit_fetched from pg_database where datname = 'regression';
    raise notice 'v_connlimit_initial: %, v_connlimit_fetched: %', v_connlimit_initial, v_connlimit_fetched;
    execute 'alter database regression with CONNECTION LIMIT ' || v_connlimit_initial;
    select datconnlimit into v_connlimit_fetched from pg_database where datname = 'regression';
    raise notice 'v_connlimit_initial: %, v_connlimit_fetched: %', v_connlimit_initial, v_connlimit_fetched;

    alter database regression with IS_TEMPLATE true CONNECTION LIMIT 100;
    execute 'alter database regression with IS_TEMPLATE false  CONNECTION LIMIT' || v_connlimit_initial;

    alter database regression with IS_TEMPLATE true;
    select datistemplate from pg_database where datname = 'regression';

    alter database regression with IS_TEMPLATE false;
    select datistemplate from pg_database where datname = 'regression';
end;
$$
language plpgsql;
NOTICE:  issuing ALTER DATABASE regression WITH  CONNECTION LIMIT 100;
DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
CONTEXT:  SQL statement "alter database regression with CONNECTION LIMIT 100"
PL/pgSQL function inline_code_block line XX at SQL statement
NOTICE:  issuing ALTER DATABASE regression WITH  CONNECTION LIMIT 100;
DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
CONTEXT:  SQL statement "alter database regression with CONNECTION LIMIT 100"
PL/pgSQL function inline_code_block line XX at SQL statement
NOTICE:  v_connlimit_initial: -1, v_connlimit_fetched: 100
CONTEXT:  PL/pgSQL function inline_code_block line XX at RAISE
NOTICE:  issuing ALTER DATABASE regression WITH  CONNECTION LIMIT -1;
DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
CONTEXT:  SQL statement "alter database regression with CONNECTION LIMIT -1"
PL/pgSQL function inline_code_block line XX at EXECUTE
NOTICE:  issuing ALTER DATABASE regression WITH  CONNECTION LIMIT -1;
DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
CONTEXT:  SQL statement "alter database regression with CONNECTION LIMIT -1"
PL/pgSQL function inline_code_block line XX at EXECUTE
NOTICE:  v_connlimit_initial: -1, v_connlimit_fetched: -1
CONTEXT:  PL/pgSQL function inline_code_block line XX at RAISE
NOTICE:  issuing ALTER DATABASE regression WITH is_template 'true' CONNECTION LIMIT 100;
DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
CONTEXT:  SQL statement "alter database regression with IS_TEMPLATE true CONNECTION LIMIT 100"
PL/pgSQL function inline_code_block line XX at SQL statement
NOTICE:  issuing ALTER DATABASE regression WITH is_template 'true' CONNECTION LIMIT 100;
DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
CONTEXT:  SQL statement "alter database regression with IS_TEMPLATE true CONNECTION LIMIT 100"
PL/pgSQL function inline_code_block line XX at SQL statement
NOTICE:  issuing ALTER DATABASE regression WITH is_template 'false' CONNECTION LIMIT -1;
DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
CONTEXT:  SQL statement "alter database regression with IS_TEMPLATE false  CONNECTION LIMIT-1"
PL/pgSQL function inline_code_block line XX at EXECUTE
NOTICE:  issuing ALTER DATABASE regression WITH is_template 'false' CONNECTION LIMIT -1;
DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
CONTEXT:  SQL statement "alter database regression with IS_TEMPLATE false  CONNECTION LIMIT-1"
PL/pgSQL function inline_code_block line XX at EXECUTE
NOTICE:  issuing ALTER DATABASE regression WITH is_template 'true';
DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
CONTEXT:  SQL statement "alter database regression with IS_TEMPLATE true"
PL/pgSQL function inline_code_block line XX at SQL statement
NOTICE:  issuing ALTER DATABASE regression WITH is_template 'true';
DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
CONTEXT:  SQL statement "alter database regression with IS_TEMPLATE true"
PL/pgSQL function inline_code_block line XX at SQL statement
ERROR:  query has no destination for result data
HINT:  If you want to discard the results of a SELECT, use PERFORM instead.
CONTEXT:  PL/pgSQL function inline_code_block line XX at SQL statement
set citus.log_remote_commands = false;