Chaining JSON_EXTRACT with CAST or STR_TO_DATE fails

You have to use JSON_UNQUOTE

select CAST( JSON_UNQUOTE( JSON_EXTRACT(data, "$.new_time")) as DATETIME) from analytics_calendaranalytics limit 10;

Would work. I am saying would because you haven't provided sample data. I tried as follows:

select @js := JSON_OBJECT('new_time',"2016-09-30T04:00:00+00:00"  );select CAST(JSON_UNQUOTE(JSON_EXTRACT(@js,'$.new_time')) as DATETIME);

The following query also works

 select STR_TO_DATE(JSON_UNQUOTE(JSON_EXTRACT(@js,'$.new_time')) ,"%Y-%m-%d");

More READABLE way to do this is using ->>;

SELECT CAST(data->>'$.new_time' AS DATETIME) FROM analytics limit 10;

Example:

mysql> CREATE TABLE analytics (data json not null);Query OK, 0 rows affected (0.03 sec)mysql> INSERT INTO analytics (data) VALUES ('{"new_time": "2021-04-21T04:00:00+00:00"}');Query OK, 1 row affected (0.01 sec)mysql> SELECT CAST(data->>'$.new_time' AS DATETIME) FROM analytics limit 10;+---------------------------------------+| CAST(data->>'$.new_time' AS DATETIME) |+---------------------------------------+| 2021-04-21 04:00:00                   |+---------------------------------------+1 row in set, 1 warning (0.00 sec)