ISNULL in MySQL - Examples & AI Generator

Understanding how the ISNULL function works in MySQL can be tricky—especially if you switch between SQL dialects. MySQL’s ISNULL(expr) only checks if a single expression is NULL, which can lead to confusion if you’re used to SQL Server’s version (which replaces values). If you don’t want to memorize the nuanced MySQL ISNULL syntax or handle edge cases manually, AI2sql enables instant ISNULL queries with no coding required—trusted by 50,000+ users across 80+ countries.

ISNULL Syntax in MySQL

Basic Syntax

ISNULL(expression)

• Returns 1 if expression is NULL, else 0.

• Different from IFNULL() and SQL Server’s ISNULL().

Syntax Differences

• MySQL: ISNULL(column) returns 1/0.

• SQL Server: ISNULL(column, replacement) replaces NULLs.

ISNULL Examples You Can Generate Instantly

• Find customers without an email address:

  SELECT customer_id, name FROM customers WHERE ISNULL(email);

• Check for missing shipping dates in orders:

  SELECT order_id, ISNULL(shipping_date) AS missing_shipping FROM orders;

• Identify products missing descriptions:

  SELECT product_id, name FROM products WHERE ISNULL(description);

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Why Use AI2sql Instead of Manual ISNULL Coding

• Speed: Create MySQL ISNULL examples instantly—no documentation or memorization.

• No Coding: Go from plain language to production-ready query in 10 seconds.

• Accuracy: Output always matches MySQL-specific ISNULL syntax.

• Try AI2sql Generator for more automated queries.

• Learn ISNULL for deeper insights and variations.

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FAQ: ISNULL in MySQL

• Q: Does ISNULL in MySQL work like SQL Server?
  A: No. In MySQL, ISNULL(expr) returns 1 or 0. To substitute values, use IFNULL(expr, alt) instead.

• Q: Can I use ISNULL in WHERE clauses?
  A: Yes. WHERE ISNULL(column) returns rows where column is NULL.

• Q: How fast can I generate queries with AI2sql?
  A: AI2sql provides instant generation—create ISNULL MySQL queries in 10 seconds, no coding required.

Confidently handle ISNULL MySQL examples without memorizing syntax. With AI2sql, you avoid manual errors, save time, and ensure reliable results for data analysis or engineering tasks. Generate Your First Query Now.