Postgresql Error: Cannot Insert Null

How to fix the "cannot insert null" error in Postgresql.

The Error

null value in column "column_name" violates not-null constraint

Solution

1. Include all required columns in your INSERT statement.
2. Provide default values in your table schema: column_name TYPE NOT NULL DEFAULT value.
3. Validate data in your application before inserting.
4. Use COALESCE to provide fallback values.

Example Fix

INSERT INTO users (name, email) VALUES ('John', 'john@example.com');
-- Correct: all required columns provided