SelectWithUnionQuery (children 3)
 ExpressionList (children 2)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function getSetting (children 1)
     ExpressionList (children 1)
      Literal \'max_block_size\'
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function getSetting (children 1)
     ExpressionList (children 1)
      Literal \'max_block_size\'
 Identifier TSV
 Set
