Node.js 原始PostgreSQL查询在使用TypeOrm执行时挂起

我正在进行此更新查询：

await this.userRepository.query(
    `
        update "user" u
        set profile_pic = i.name
        from user_images_image uii
        inner join image i on uii."imageId" = i."id"
        where uii."userId" = u.id and u.id = ${userId} and i.id = ${imageId};
    `,
);

---

即使我在DB客户机中执行了相同的查询，它也不会终止。在一次故障排除会话后，我们发现查询被锁定，因为另一个连接正在尝试更新相关资源（在

users

表中的记录，带有来自

user\u images\u image

的外键）以相同的方法用于不同的事务，都在等待提交结果

通过使用相同的连接，我们最终得到了正确的行为

我们通过使用锁监视查询发现：

---

pg\u stat\u activity

在说什么？连接的状态是什么？@GustavoKawamoto

pg\u stat\u activity

说它是一个锁，即

wait\u event\u type

是锁，

wait\u event

是事务ID，

state

是活动的。这就是你要问的连接状态吗？是的。从外观上看当然，有什么东西会以某种方式锁定你的更新。你可以通过使用找到什么东西锁定了什么。@GustavoKawamoto哦，谢谢你，我会检查它们的。但是，由于我刚刚设法发现它与我正在进行的交易有关，更准确地说，我重写了相同的方法，但没有进行交易，它是有效的…@GustavoKawamoto您对transactionid可能是什么有什么想法吗？我不太清楚它在低级别上是如何工作的。

SELECT blocked_locks.pid     AS blocked_pid,
         blocked_activity.usename  AS blocked_user,
         blocking_locks.pid     AS blocking_pid,
         blocking_activity.usename AS blocking_user,
         blocked_activity.query    AS blocked_statement,
         blocking_activity.query   AS current_statement_in_blocking_process,
         blocked_activity.application_name AS blocked_application,
         blocking_activity.application_name AS blocking_application
   FROM  pg_catalog.pg_locks         blocked_locks
    JOIN pg_catalog.pg_stat_activity blocked_activity  ON blocked_activity.pid = blocked_locks.pid
    JOIN pg_catalog.pg_locks         blocking_locks 
        ON blocking_locks.locktype = blocked_locks.locktype
        AND blocking_locks.DATABASE IS NOT DISTINCT FROM blocked_locks.DATABASE
        AND blocking_locks.relation IS NOT DISTINCT FROM blocked_locks.relation
        AND blocking_locks.page IS NOT DISTINCT FROM blocked_locks.page
        AND blocking_locks.tuple IS NOT DISTINCT FROM blocked_locks.tuple
        AND blocking_locks.virtualxid IS NOT DISTINCT FROM blocked_locks.virtualxid
        AND blocking_locks.transactionid IS NOT DISTINCT FROM blocked_locks.transactionid
        AND blocking_locks.classid IS NOT DISTINCT FROM blocked_locks.classid
        AND blocking_locks.objid IS NOT DISTINCT FROM blocked_locks.objid
        AND blocking_locks.objsubid IS NOT DISTINCT FROM blocked_locks.objsubid
        AND blocking_locks.pid != blocked_locks.pid
 
    JOIN pg_catalog.pg_stat_activity blocking_activity ON blocking_activity.pid = blocking_locks.pid
   WHERE NOT blocked_locks.GRANTED;