两个文本文件的内连接

问题描述

希望对两个不同的文本文件执行内部联接.基本上，我正在寻找与 GNU 连接程序等效的内部连接.这样的事情存在吗?如果没有，awk 或 sed 解决方案将是最有帮助的，但我的首选是 Linux 命令.

Looking to perform an inner join on two different text files. Basically I'm looking for the inner join equivalent of the GNU join program. Does such a thing exist? If not, an awk or sed solution would be most helpful, but my first choice would be a Linux command.

这是我想要做的一个例子

Here's an example of what I'm looking to do

文件 1:

0|Alien Registration Card LUA|Checklist Update
1|Alien Registration Card LUA|Document App Plan
2|Alien Registration Card LUA|SA Application Nbr
3|Alien Registration Card LUA|tmp_preapp-DOB
0|App - CSCE Certificate LUA|Admit Type
1|App - CSCE Certificate LUA|Alias 1
2|App - CSCE Certificate LUA|Alias 2
3|App - CSCE Certificate LUA|Alias 3
4|App - CSCE Certificate LUA|Alias 4

文件 2:

Alien Registration Card LUA

结果:

0|Alien Registration Card LUA|Checklist Update
1|Alien Registration Card LUA|Document App Plan
2|Alien Registration Card LUA|SA Application Nbr
3|Alien Registration Card LUA|tmp_preapp-DOB

推荐答案

file2 不应该在末尾包含 LUA 吗?

Should not the file2 contain LUA at the end?

如果是，您仍然可以使用join:

If yes, you can still use join:

join -t'|' -12 <(sort -t'|' -k2 file1) file2

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