PostgreSQL JSON Type Errors: Debugging Numeric Operations in JSONB Queries

Developers working with PostgreSQL's JSONB often encounter error 22036 when numeric operations target non-numeric values, which can cause unexpected runtime failures in production. Understanding the root causes—such as numeric values stored as strings, operations on arrays, or null values—enables developers to write more robust JSON queries. The practical solutions covered, from type conversion methods to safe extraction functions, help prevent these errors and improve data handling reliability.