How to JSON in MySQL

How to get the JSON field types in MySQL

To get the type of a JSON item in MySQL you need to use the JSON_TYPE function.

How to JSON in MySQL

How to extract an item from an array in a JSON object in MySQL

To extract an item from an array in MySQL you need to use the -> operator and the [item_number] JSON Path Syntax.

How to JSON in MySQL

How to extract a field from a JSON object in MySQL

MySQL® offers three ways to extract fields from a JSON object:

the -> operator to extract the field as JSON
the ->> operator to extract the field as text
the JSON_EXTRACT function

Both operators use the JSON Path Syntax

How to JSON in PostgreSQL®

How to extract a field from a JSON object in PostgreSQL®?

PostgreSQL® offers two types of data types to handle JSON data, JSON and JSONB, and provides several different ways to extract fields from a JSON document: