中国DOS联盟

P001 |    1 |    2 | 87良
P002 |    1 |    2 | 92优
P003 |    1 |    2 | 89良
P004 |    1 |    2 | 90优
P005 |    1 |    2 | 84良
....

90优

@echo off
setlocal enabledelayedexpansion
for %%a in (P???.txt) do (
  set /p var=<%%a
  change ALL.txt /from "%%~na*" /to "%%~na |    1 |    2 | !var!" /in "%%~na"
)

@echo off
setlocal enabledelayedexpansion
for %%a in (P???.txt) do (
  set /p var=<%%a
  for /f "tokens=7 delims= " %%h in (' findstr /i "%%~na" ALL.txt') do (
    change ALL.txt /from "%%h" /to "!var!" /in "%%~na"
  )
)

@echo off&setlocal enabledelayedexpansion
for /f "tokens=1-4 delims=| " %%i in ('type "all.txt"') do (
    if not defined str cd.>all.txt
    set/p str=<%%i.txt
    >>all.txt echo.%%i ^|    %%j ^|    %%k ^| !str!
)
pause