How JSON Dates Are Handled
All datetime data is converted to string.
The string output format is UTC (Z) based for a TIMESTAMP WITH any time zone:
YYYY-MM-DDThh
ss.s[s[s[s[s[s]]]]Z
The output format for a TIMESTAMP WITHOUT TIME ZONE omits the Z:
YYYY-MM-DDThhss.s[s[s[s[s[s]]]]
For example, running JSON_OBJECT() on an ingresdate column produces the following output:
+-----------------------------------------------------------------+
+-----------------------------------------------------------------+
|{"ingresdate col":"2018-12-14T20:56:48Z"} |
|{"ingresdate col":"5 hrs"} |
|{"ingresdate col":"5 hrs"} |
|{"ingresdate col":"1 days"} |
|{"ingresdate col":"2540 days"} |
|{"ingresdate col":"5 hrs"} |
|{"ingresdate col":"5 hrs"} |
+-----------------------------------------------------------------|