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 ilike (children 1)
      ExpressionList (children 2)
       Identifier s
       Literal \'%привет%\'
     Function like (children 1)
      ExpressionList (children 2)
       Identifier s
       Literal \'world%\'
   Set
