Function validate_table_name 

pub fn validate_table_name(table_name: &str) -> Result<()>

Validate a table name to prevent SQL injection

Table names must contain only:

• Lowercase letters (a-z)
• Uppercase letters (A-Z)
• Digits (0-9)
• Underscores (_)

This prevents SQL injection attacks through table names.

Arguments

• table_name - The table name to validate

Returns

Ok(()) if valid, Err with message if invalid

Examples

assert!(validate_table_name("users").is_ok());
assert!(validate_table_name("user_events_2024").is_ok());
assert!(validate_table_name("users; DROP TABLE users;").is_err());
assert!(validate_table_name("users'--").is_err());