Laravel 5.6, MySQL 5.7, Cannot select the new JSON type field

Question

I am storing some data inside mysql using the JSON Type field. When I try to select query my json data field in Laravel 5.6, I get an exception

 $transactions = DB::table('transactions')
       ->select('transactions.uuids_json', '... other columns')
....

SQLSTATE[HY000]: General error: 2036, query exception

If I remove the uuids_json field, everything works normal. Do I have to somehow use raw statements or something?

The column uuid_json data field contains rows like this:

["1a7b29b8-5009-4266-8192-508930f2f92a", "3d52cfd5-d3c0-467f-8da1-cf81c344ad20", "cbe6e7fb-d806-49e2-8616-3c28afa012fe", "dfda9df5-2cbf-4cb8-aa54-a6dc23f73995"]

Thank you for any help!

Answer 1

This sounds related to https://bugs.php.net/bug.php?id=70384

Make sure your PHP install is using the mysqlnd 5.0.11 or later, which according to that bug log should include the fix.

Check php -i or phpinfo() for the version of mysqlnd you use.

If you can't upgrade to a version of the library that supports the JSON data type, a workaround is to CAST the JSON column to a string:

->select(\DB::raw("CAST(transactions.uuids_json as CHAR) as uuids_json"), ...)