SelectWithUnionQuery (children 1)
 ExpressionList (children 3)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Identifier t1.c1
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t3
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier t1
     TableJoin
   Function and (children 1)
    ExpressionList (children 2)
     Literal Bool_1
     Identifier t1.c2
  SelectQuery (children 3)
   ExpressionList (children 1)
    Identifier t1.c1
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t3
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier t1
     TableJoin
   Function not (children 1)
    ExpressionList (children 1)
     Identifier t1.c2
  SelectQuery (children 3)
   ExpressionList (children 1)
    Identifier t1.c1
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t3
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier t1
     TableJoin
   Function isNull (children 1)
    ExpressionList (children 1)
     Identifier t1.c2
