function get_db_columns
      set user $argv[1]
      set password $argv[2]
      set server $argv[3]
      echo "1.) sql auth"
      echo "2.) windows auth"
      read auth_type
      if test $auth_type = 1
          set netexec_cmd "proxychains -q netexec mssql $server -u $user -p $password --local-auth"
      else
          set netexec_cmd "proxychains -q netexec mssql $server -u $user -p $password"
      end
      mkdir $server
      eval "$netexec_cmd -q \"SELECT name FROM master.sys.databases\"" | tee ./$server/raw_dbs.txt
      cat ./$server/raw_dbs.txt | grep "name:" | cut -d ":" -f 2 | tee ./$server/dbs.txt 
      for db in $(cat ./$server/dbs.txt)
                mkdir ./$server/$db
                eval "$netexec_cmd -q \"use $db; SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE='BASE TABLE'\"" | tee ./$server/$db/raw_tables.txt
                for table in $(cat ./$server/$db/raw_tables.txt | grep table_name | cut -d ":" -f 2)
                        mkdir ./$server/$db/$table
                        eval "$netexec_cmd -q \"use $db; SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '$table'\"" | tee ./$server/$db/$table/raw_columns.txt
                        cat ./$server/$db/$table/raw_columns.txt | grep "COLUMN_NAME" | cut -d ":" -f 2 | tee ./$server/$db/$table/column_names.txt
                    end
            end
  end