SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 4)
    Identifier id
    Identifier value
    Identifier extra
    Identifier num
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier metadata_alias
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier id
     Literal UInt64_4
