Explain EXPLAIN SYNTAX (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 1)
     Function materialize (alias s) (children 1)
      ExpressionList (children 1)
       Literal \'Привет, 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 ilike (children 1)
       ExpressionList (children 2)
        Identifier s
        Literal \'world%\'
    Set
