确定 SQLite 中查询的执行时间 [英] Determining execution time of queries in SQLite
问题描述
我正在创建一个用于分析和生成查询的程序.我很好奇 SQLite 目前是否存在一种方法,以便我可以查询处理查询所需的时间?我无法以任何方式修改我的安装,因此此方法需要开箱即用.我正在用 python 编写我的工具,虽然我想我可以使用计时器类来计时执行 - 当我连接到远程机器(并返回一致的时间)时,此方法将不起作用.
I am creating a program for analyzing and generating queries. I was curious if there currently exists a method within SQLite such that I could query the time taken for a query to process? I am unable to modify my install in any way, so this method needs to work out of the box. I am writing my tool in python, and although I guess I could use the timer class to time execution -this method will not work when I am connecting to remote machines (and return a consistent timing.)
推荐答案
在 sqlite3 命令行程序中,您可以执行以下操作:
From within the sqlite3 command-line program you can do:
.timer ON
select * from my_table;
这将打印查询所用的 CPU 时间.
This will print the CPU time taken for the query.
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