SQL Injection Pattern Regex Pattern

Detect common SQL injection attempts

•

Difficulty

Language

none

Flags

// Regular Expression

Live Regex Tester

Pattern

Flags

Test String

Pattern Breakdown

Character class [ ]

Group ( )

Quantifier { }

Anchor ^ $

Repetition * + ?

Escape \

Alternation |

Any char .

Code Examples

JavaScript

const regex = /(?:--|;|\b(?:SELECT|INSERT|UPDATE|DELETE|DROP|UNION|ALTER)\b)/undefined;
const test = "undefined";
console.log(regex.test(test)); // true

// Extract matches
const matches = test.match(regex);
console.log(matches);

Python

import re

pattern = r'(?:--|;|\b(?:SELECT|INSERT|UPDATE|DELETE|DROP|UNION|ALTER)\b)'
test = "undefined"
match = re.search(pattern, test)
print(match)  # Found!

Go

package main

import (
    "fmt"
    "regexp"
)

func main() {
    re := regexp.MustCompile(`(?:--|;|\b(?:SELECT|INSERT|UPDATE|DELETE|DROP|UNION|ALTER)\b)`)
    fmt.Println(re.MatchString("undefined")) // true
}

Common Use Cases

Match Examples

Input	Result
	Match
	No Match

About the SQL Injection Pattern Regex

Detect common SQL injection attempts

Regular expressions (regex) are powerful pattern matching tools used across virtually all programming languages. The sql injection pattern pattern. It works in all major programming languages.

When using this regex, always consider edge cases and test thoroughly with real-world data. Use the interactive tester above to validate the pattern against your specific inputs before deploying to production.

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Frequently Asked Questions

What is the SQL Injection Pattern regex pattern?

Detect common SQL injection attempts

How do I use the SQL Injection Pattern regex?

What does this SQL Injection Pattern regex match?

Is the SQL Injection Pattern regex beginner-friendly?

This pattern is rated Intermediate. It uses advanced features like lookaheads, backreferences, or complex alternation.

What languages support the SQL Injection Pattern regex?

This pattern works in all major programming languages including JavaScript, Python, Java, C#, Go, Ruby, PHP, and more. Syntax may vary slightly between regex engines.

Can I modify the SQL Injection Pattern regex for my use case?

Yes! Use the interactive tester above to modify the pattern and test with your own data. Common modifications include making it case-insensitive (add 'i' flag), matching globally (add 'g' flag), or adjusting character classes.