UpdateQuery  t_lwu_add_column (children 3)
 Identifier t_lwu_add_column
 Function equals (children 1)
  ExpressionList (children 2)
   Function modulo (children 1)
    ExpressionList (children 2)
     Identifier a
     Literal UInt64_2
   Literal UInt64_0
 ExpressionList (children 1)
  Assignment b (children 1)
   Literal UInt64_1
