A simple Oracle PL/SQL statement provided for [my blog-post on databases](https://www.alexanderjsingleton.com/event-horizon-data-centric-future)

plsql.sql

-- An Oracle PL/SQL example for my blog-post:

CONNECT ap/ap;
SET SERVEROUTPUT ON
declare
  min_invoice_total ap.invoices.invoice_total%TYPE;
  max_invoice_total ap.invoices.invoice_total%TYPE;
begin
   SELECT MIN(invoice_total), MAX(invoice_total)  INTO min_invoice_total,max_invoice_total
   FROM ap.invoices;
   DBMS_OUTPUT.put_line(REGEXP_REPLACE('The minimum invoice total is' ||
   to_char(min_invoice_total, '$999,999.00') ||
   ' while the maximum output total is ' ||
   to_char(max_invoice_total, '$999,999.00')  || '.', ' +', ' ')); 
end;