Using the 'get_tz' Option

The 'get_tz' option returns the $TZ string that shows the time zone of the current session.

The following example uses the 'get_tz' option in a query of the cust_calls table of the stores_demo database: 
EXEC SQL select first call_dtime, dbinfo('get_tz')
   from cust_calls where customer_num = 106;

This example returns a string value of the session time zone and the first call_dtime value in the cust_calls table for which the customer_num value is 106.