code: def f_add(*args):
      # strings and numbers are supported
      # maybe it is not true sql-way
  
      out = args[0] + args[1]
      for i in args[2:]:
          out += i
      return out
  
imports: import re
  import operator
label_desc: Use image node_id 4 for calling a global function with example usage: f_add() and returns: out