15.10 - Example: JSONExtract with NULL Results - Teradata Database

Teradata Database Teradata JSON

Product
Teradata Database
Release Number
15.10
Published
December 2015
Language
English (United States)
Last Update
2018-06-05
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TeradataJSON_15_10.ditamap
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The example uses the JSONExtract method to extract NULL results from a table.
The example uses the table(s) created earlier.
/* 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" ]