Quick Answer

Value exceeds column size limit

Understanding the Issue

This error occurs when trying to insert or update data that is too large for the column's defined size (e.g., 100-character string in VARCHAR(50)).

The Problem

This code demonstrates the issue:

Sql Error 
-- Problem: String too long
INSERT INTO products (description) VALUES ('A very long product description...'); -- description is VARCHAR(100)

The Solution

Here's the corrected code:

Sql Fixed 
-- Solution 1: Truncate data
INSERT INTO products (description) 
VALUES (LEFT('A very long product description...', 100));

-- Solution 2: Increase column size
ALTER TABLE products MODIFY description VARCHAR(500);

-- Solution 3: Change to TEXT type
ALTER TABLE products MODIFY description TEXT;

-- Solution 4: Validate in application first
-- Check length before sending to database

Key Takeaways

Ensure data fits column constraints or modify the schema.