postgresql - 如何打破postgresql中的连接池？

Question

CREATE OR REPLACE FUNCTION add_() RETURNS void AS 
$BODY$ 
declare
    foo int; 
BEGIN

FOR i IN 1..50 LOOP         
    foo = i;
    RAISE NOTICE 'combination_array(%)', foo ;
    UPDATE table_1 set r_id = foo WHERE id = (select id from table_1 where r_id is null order by id limit 1); 
END LOOP;

END; $BODY$ LANGUAGE 'plpgsql' ;

SELECT add_();

每次执行后执行

UPDATE table_1 
   set r_id = foo 
WHERE id = (select id from table_1 where r_id is null order by id limit 1); 

END LOOP;

它会很忙，有人告诉我如何清除 pgsql 中的拉动

Answer 1

返回所有带id的连接

SELECT * from pg_stat_activity;

您可以通过以下查询通过 procpid 终止特定连接。

select pg_terminate_backend(procpid)
    from pg_stat_activity
    where datname = 'database-name'