Example: JSONExtract with NULL Results - Advanced SQL Engine - Teradata Database

The example uses the JSONExtract method to extract NULL results from a table.

/* JSONExtract with some NULL results – get everyone's job. */
 
SELECT eno, edata.JSONExtract('$..job') 
FROM my_table 
ORDER BY 1;

Result: A NULL is returned for a person in the table who does not have a job.

ENO edata.JSONExtract(…)
--------------------------
1  [ "programmer" ]
2  ?
3  [ "CPA" ]
4  [ "small business owner" ]