Suppose you need to create a script to convert date values to the ANSI DATE format, regardless of the source of the DATE value or the DATEFORM mode of the session.
You can use nested CASTs and a FORMAT to do this as demonstrated by the example that follows.
SELECT CAST( (CAST (F1 AS FORMAT 'YYYY-MM-DD')) AS CHAR(10)) FROM INTDAT;
The result after the nested CASTs is the following report.
F1 ---------- 1900-12-31