SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 2)
           Subquery (alias n) (children 1)
            SelectWithUnionQuery (children 1)
             ExpressionList (children 1)
              SelectQuery (children 1)
               ExpressionList (children 1)
                Literal \'\\\\d[a-z]\'
           Function extractAll (children 1)
            ExpressionList (children 2)
             Literal \'5abc\'
             Function assumeNotNull (children 1)
              ExpressionList (children 1)
               Identifier n
 Identifier CSV