SQL String Escape Tool
Safely escape strings for SQL queries to prevent SQL injection attacks. This tool handles special characters and formatting for MySQL, PostgreSQL, SQL Server, and other database systems.
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About SQL String Escaping
SQL string escaping is a critical security measure that converts special characters in strings to their escaped equivalents, preventing SQL injection attacks. This is essential when:
- Building SQL queries dynamically with user input
- Inserting strings containing quotes or special characters
- Protecting your database from malicious input
- Working with legacy systems that don't use parameterized queries
Example Queries
Here's how escaped strings would be used in actual SQL queries:
MySQL Example
SELECT * FROM users WHERE username = 'escaped_string_here';
PostgreSQL Example
INSERT INTO products (name, description) VALUES ('escaped_name', 'escaped_description');
SQL Server Example
UPDATE employees SET notes = 'escaped_notes' WHERE id = 123;
Important Security Note
While string escaping helps prevent SQL injection, parameterized queries (prepared statements) are the recommended approach for maximum security. Use this tool when:
- Working with legacy systems that don't support parameterized queries
- Building dynamic SQL where parameters aren't possible
- Need to escape strings for other purposes like logging