MySQL 8.0: guide with JSON_EXTRACT returning NULL for valid JSON string in a SELECT statement
I need help solving I've been banging my head against this for hours. This might be a silly question, but I'm working with a question with MySQL 8.0 where the `JSON_EXTRACT` function consistently returns NULL, even though I'm querying a valid JSON string stored in a column. I have a table named `users` with a column `data` that contains JSON objects. For instance, I have the following JSON stored in the `data` column: ```sql '{'"name": "John", "age": 30}' ``` When I run this query to extract the `name` field: ```sql SELECT JSON_EXTRACT(data, '$.name') AS name FROM users WHERE id = 1; ``` I expect to retrieve "John", but instead, I get NULL. I've also tried using the `->>` operator: ```sql SELECT data->>'$.name' AS name FROM users WHERE id = 1; ``` This also returns NULL. I've confirmed that the `data` column is indeed of type JSON and that other queries on this table are functioning correctly. I've also tried running the same extraction query on other rows with similar JSON structures, but I get the same NULL result. To troubleshoot, I ran: ```sql SELECT data FROM users WHERE id = 1; ``` And confirmed that the value retrieved is the valid JSON string I expected. I've also ensured there are no hidden characters or whitespace issues by using `TRIM` but that didn't help either. Could there be a specific setting or compatibility scenario in MySQL 8.0 that's affecting JSON functionality? Any insights on what might be going wrong would be greatly appreciated. I'm developing on macOS with Sql. Has anyone else encountered this? I'm on Ubuntu 22.04 using the latest version of Sql. How would you solve this?