use bat file to write csv with sql data

1- write sql that will get data to csv

file name: allsql.sql

SET PAGESIZE 0;
SET LINESIZE 5000;
SET TRIMSPOOL ON;
SET TERMOUT OFF;
SET TIMING OFF;
SET FEEDBACK OFF;

spool file.csv;

# there are sql sentences here end with ;
# e.g.:
select * from u;


spool off;
quit;

2- login sql, execute sql, write to csv file and add headers

@echo off

sqlplus account/password@address @allsql.sql

:: generator the  csv file
echo FIELD1,FIELD2>INDEX.csv
type index.csv >> INDEX.csv
del index.csv