Concatenate text in batch - batch-file

Question

I have sql files in a folder structure like the following :
C:\Users\Peter\Desktop\SQL_FILES\data_structure\customer1\test.sql
C:\Users\Peter\Desktop\SQL_FILES\data_structure\customer2\test.sql
C:\Users\Peter\Desktop\SQL_FILES\data_structure\customer3\test.sql
C:\Users\Peter\Desktop\SQL_FILES\data_structure\customer4\test.sql
........
I want to make a script which reads the path (C:\Users\Peter\Desktop\SQL_FILES),
the name of the file(test.sql) and a text
and then concatenate the text in the end of each test.sql file.
Could you help me please ?
Thanks in advance
:: Hide Command and Set Scope
#echo off
setlocal EnableExtensions
mode 140,50
set /p AbsolutePath="Enter the path of root folder :"
echo.
set /p FileName="Enter the filename with it's extension (ie. test.sql):"
echo.
echo Enter your inserts
echo Press Enter twice when finished
echo (text may not contain ^<, ^>, ^|, ^&, or un-closed quotes)
ver > NUL
set new_line=""
:still_typing
set /p new_line=">"
if errorlevel 1 echo. >> temp.txt & set /p new_line=">"
if errorlevel 1 echo Sending message. . . & goto done_typing
echo %new_line% >> temp.txt
goto still_typing
:done_typing
echo done
:End
endlocal
pause >nul
=====================================
For example :
The file test.sql for example contains initially :
INSERT INTO TEST(COL1,COL2,COL3) VALUES(3,4,5);
And after the execution of batch supposing I add an empty line and two inserts in the text :
INSERT INTO TEST(COL1,COL2,COL3) VALUES(3,4,5);
INSERT INTO TEST(COL1,COL2,COL3) VALUES (1,2,3);
INSERT INTO TEST(COL1,COL2,COL3) VALUES (2,3,4);

Answer 1

The Batch file below use a different method to do the same, but in a simpler way. This code may be modified in any point you wish; for example, if you want not that the filename must include a wild-card.
#echo off
setlocal
set /p "AbsolutePath=Enter the path of root folder: "
echo/
set /p "FileName=Enter the filename with a wild-card (ie. test*.sql): "
echo/
echo Enter your inserts
echo Press Ctrl-Z and Enter when finished
copy CON temp.txt > NUL
echo/
echo Typing done
echo/
for /R "%AbsolutePath%" %%a in (%FileName%) do type temp.txt >> "%%a"