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如何在 postgres 中使用 \\timing

[英]how to use \timing in postgres

I want to know the time that it takes to execute a query in Postgres, I see a lot of response that propose to use \\timing, but I'm newbie in Postgres and I don't know how to use it, can anyone help我想知道在 Postgres 中执行查询所需的时间,我看到很多建议使用 \\timing 的响应,但我是 Postgres 的新手,我不知道如何使用它,任何人都可以帮忙
thank you in advance提前谢谢你

You can use \\timing only with the command line client psql , since this is a psql command.您只能将\\timing与命令行客户端psql ,因为这是一个psql命令。

It is a switch that turns execution time reporting on and off:这是一个打开和关闭执行时间报告的开关:

test=> \timing
Timing is on.
test=> SELECT 42;
┌──────────┐
│ ?column? │
├──────────┤
│       42 │
└──────────┘
(1 row)

Time: 0.745 ms
test=> \timing
Timing is off.

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