SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier ab_12_aaa (alias aa)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier ab_12_bbb (alias bb)
     TableJoin (children 1)
      Function and (children 1)
       ExpressionList (children 2)
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier bb.id
          Identifier aa.id
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier bb._year
          Identifier aa._year
   Function greaterOrEquals (children 1)
    ExpressionList (children 2)
     Identifier bb.theyear
     Literal UInt64_2019
