PostgreSQL using JSONB in WHERE clause behaves unexpectedly with nested keys
I'm optimizing some code but I'm working with PostgreSQL 13 and trying to filter records based on a JSONB column that contains nested keys... I have a table `users` structured as follows: ```sql CREATE TABLE users ( id SERIAL PRIMARY KEY, data JSONB ); ``` The `data` column contains user information, including a nested structure for preferences: ```json { "name": "John", "preferences": { "language": "English", "notifications": { "email": true, "sms": false } } } ``` I want to retrieve all users who have `sms` notifications enabled. My query looks like this: ```sql SELECT * FROM users WHERE data->'preferences'->'notifications'->>'sms' = 'true'; ``` However, this query returns no results, even though I know there are entries that should match. I've tried using `data->'preferences'->'notifications'->>'sms' = 'false'` just to see if the logic is inverted, but it still returns nothing. I also considered the possibility that the value is being stored as a boolean rather than a string. To check this, I ran: ```sql SELECT jsonb_typeof(data->'preferences'->'notifications'->'sms') AS type FROM users; ``` This returned `boolean`, confirming it is indeed stored as a boolean type. So I modified my query as follows: ```sql SELECT * FROM users WHERE (data->'preferences'->'notifications'->>'sms')::boolean = true; ``` But still no records are returned. Could it be that the boolean is stored differently? Or is there an scenario with the query syntax? Any insights would be helpful as I'm exploring trying to debug this scenario. I'm working on a API that needs to handle this. This is happening in both development and production on Debian. Thanks in advance! The stack includes Sql and several other technologies. Cheers for any assistance! Any pointers in the right direction?