Explain EXPLAIN SYNTAX (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 2)
     Function materialize (alias s1) (children 1)
      ExpressionList (children 1)
       Literal \'Привет, World\'
     Function materialize (alias s2) (children 1)
      ExpressionList (children 1)
       Literal \'Привет, World\'
    Function or (children 1)
     ExpressionList (children 3)
      Function like (children 1)
       ExpressionList (children 2)
        Identifier s1
        Literal \'hell%\'
      Function ilike (children 1)
       ExpressionList (children 2)
        Identifier s2
        Literal \'%привет%\'
      Function ilike (children 1)
       ExpressionList (children 2)
        Identifier s1
        Literal \'world%\'
    Set
