JSONB

Data Type

Binary JSON data type in PostgreSQL. Supports indexing and efficient queries on JSON data.

Syntax

col JSONB | col->>'key' | col @> '{}'

Example

SELECT * FROM users
WHERE preferences->>'theme' = 'dark';

SELECT data->'address'->>'city' as city
FROM profiles;

About SQL JSONB

The JSONB keyword belongs to the Data Type category of SQL statements. Binary JSON data type in PostgreSQL. Supports indexing and efficient queries on JSON data. Understanding this command is essential for any developer working with relational databases like PostgreSQL, MySQL, SQLite, or SQL Server.

SQL (Structured Query Language) is the standard language for managing and querying relational databases. The JSONB statement is supported across all major database systems, though specific syntax may vary slightly between PostgreSQL, MySQL, MariaDB, Oracle, SQL Server, and SQLite. Always consult your database's documentation for vendor-specific features and limitations.

Best practices for using JSONB: always test queries on a development database before running them in production, use parameterized queries to prevent SQL injection, and leverage EXPLAIN to understand query performance. For complex queries, consider using CTEs (Common Table Expressions) to improve readability and maintainability.

Related SQL Keywords

JSON_AGG CAST WHERE