Postvacs pg_toast在autovacuum中-哪个表？

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问题描述

我在pg_toast上运行了一个自动清理过程：

I have an autovacuum process running on pg_toast:

select query, from pg_stat_activity where query like '%autov%';
"autovacuum: VACUUM pg_toast.pg_toast_15404513 "

我如何找出表/索引/这个pg_toast涉及什么？还是autovacuum在其他方面起作用？

How do I find out what table/index/whatever this pg_toast pertains to? Or is the autovacuum working on something else?

推荐答案

我想您会想要类似的东西：

I think you'll want something like:

select n.nspname, c.relname 
from pg_class c 
inner join pg_namespace n on c.relnamespace = n.oid
where reltoastrelid = (
    select oid
    from pg_class 
    where relname = 'pg_toast_15404513' 
    and relnamespace = (SELECT n2.oid FROM pg_namespace n2 WHERE n2.nspname = 'pg_toast') )

如果Pg在vacuum命令摘要中报告了这一点，那就太好了。

It'd be nice if Pg reported this in the vacuum command summary.

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