A practical guide to using the JSONB type in PostgreSQL
JSONB, or JSON Binary, is a more efficient way to store and manipulate JSON data in PostgreSQL. It stores data in a decomposed binary format, which allows for faster access to individual elements within the JSON document. It is the recommended way to store JSON data in PostgreSQL.
Working with JSONB in PostgreSQL involves a set of operations that allow you to create, query, update, and manipulate JSONB data efficiently.
To store data in a JSONB format, you first need to create a table with a JSONB column. Here’s how you can create a table for storing user profiles:
Once you have a table with a JSONB column, you can insert data into it. Here’s an example of inserting a user profile with various attributes:
Selecting data from a JSONB column is similar to selecting from any other data type. However, you have the added benefit of using JSONB operators and functions to query specific elements within the JSONB document. Here’s how you can select profiles of users who are interested in chess:
Updating JSONB data can be done using the jsonb_set function to change existing values, or the || operator to add new key-value pairs. Here’s how you can update a user’s age and add a new interest:
