SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function materialize (alias s) (children 1)
     ExpressionList (children 1)
      Literal \'Привет, optimized World\'
   Function or (children 1)
    ExpressionList (children 3)
     Function like (children 1)
      ExpressionList (children 2)
       Identifier s
       Literal \'hell%\'
     Function like (children 1)
      ExpressionList (children 2)
       Identifier s
       Literal \'%привет%\'
     Function ilike (children 1)
      ExpressionList (children 2)
       Identifier s
       Literal \'%world\'
   Set
