[文本处理] [已解决]批处理怎样根据文本第一列处理第二列文本？

@echo off
(for /f "tokens=1,2 delims=," %%1 in (a.txt) do (
    if not defined _%%1 (
        if defined #1 (echo,) else set #1=#
        set /p ="%%1-%%2"<nul
        set _%%1=_
    ) else set /p =",%%2"<nul
)) >b.txt
复制代码

@echo off
(for /f "tokens=1* delims=," %%a in (a.txt) do if defined #%%a (set/p"=,%%b"<nul) else (
        if defined a echo;
        set/p"=%%a-%%b"<nul
        set a==
        set #%%a==
))>a_.txt
复制代码

@echo off
(for /f "tokens=1* delims=," %%a in ('sort a.txt') do if defined #%%a (set/p"=,%%b"<nul) else (
        if defined a (echo;) else set a==
        set/p"=%%a-%%b"<nul
        set #%%a==
))>a_.txt
复制代码

gawk "BEGIN{FS=\",\"}{a[$1]=a[$1]\",\"$2}END{for(i in a)print i\"-\"substr(a,2)}"  urfile
复制代码