Fast way to extract data from Error Based SQL Injections in SQL Server.Finding Database Structure in SQL Server.Enabling xp_cmdshell in SQL Server 2005.If Statement SQL Injection Attack Samples.Language / Database Stacked Query Support Table.Classical Inline Comment SQL Injection Attack Samples.Syntax Reference, Sample Attacks and Dirty SQL Injection Tricks.(M*S) means : Only in some versions of MySQL or special conditions see related note and SQL Server.Samples are provided to allow you to get basic idea of a potential attack and almost every section includes a brief information about itself. Some of the samples in this sheet might not work in every situation because real live environments may vary depending on the usage of parentheses, different code bases and unexpected, strange and complex SQL sentences. About the SQL Injection Cheat SheetĬurrently this SQL injection cheat sheet contains information for MySQL, Microsoft SQL Server, and some limited information for ORACLE and PostgreSQL SQL servers. This SQL injection cheat sheet is of good reference to both seasoned penetration tester and also those who are just getting started in web application security. Use comments to document your SQL statements, schemas, and stored procedures.An SQL injection cheat sheet is a resource in which you can find detailed technical information about the many different variants of the SQL injection (SQLi) vulnerability.) /*!50110 KEY_BLOCK_SIZE=1024 */ Code language: SQL (Structured Query Language) ( sql ) Summary And the last 2 is the patch level.įor example, the following comment is only executable in MySQL 5.1.10 or later: CREATE TABLE t1 ( The second 2 numbers (#) are the minor version. The first # is the major version e.g., 5 or 8. The string ‘#’ represents the minimum version of MySQL that can execute the comment. If you want to execute a comment from a specific version of MySQL, you use the following syntax: /*!# MySQL-specific code */ Code language: SQL (Structured Query Language) ( sql ) However, it will return 1 if you execute it in other database systems. The following illustrates the executable comment syntax: /*! MySQL-specific code */ Code language: SQL (Structured Query Language) ( sql )įor example, the following statement uses an executable comment: SELECT 1 /*! +1 */ Code language: SQL (Structured Query Language) ( sql ) These comments allow you to embed SQL code that will execute only in MySQL but not in other databases. In MySQL, executable comments support portability between different databases. SELECT * FROM products 3) Executable comments For example: - This is a multi-line comment While - is primarily for single-line comments, you can use it for multi-line comments by adding - at the beginning of each line. SELECT * FROM orders Code language: JavaScript ( javascript ) Using - for Multi-Line Comments Everything between the opening /* and closing */ is treated as a comment. You can enclose your comments within /* and */ to create multi-line comments. MySQL supports two types of multi-line comments: Delimited by /*. Multi-line comments allow you to add comments spanning multiple lines. SELECT * FROM customers Code language: PHP ( php ) 2) Multi-Line Comments For example: # This is another single-line comment Any text following # on the same line is treated as a comment. For example: - This is a single-line commentĪlternatively, you can use the hash ( #) symbol to add single-line comments. Any text following - on the same line is treated as a comment. You can add a single-line comment using two hyphens ( -) followed by your comment text. MySQL supports two types of single-line comments: Using. Single-line comments are used to add comments on a single line. They help you and other developers understand the code and its purpose. MySQL comments are essential for documenting your database schema, SQL queries, and stored procedures. Summary: in this tutorial, you will learn how to use MySQL comments to document your code in MySQL.
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