SQL Injection Cheat Sheet

MySQL - http://pentestmonkey.net/cheat-sheet/sql-injection/mysql-sql-injection-cheat-sheet
Oracle - http://pentestmonkey.net/cheat-sheet/sql-injection/oracle-sql-injection-cheat-sheet
MSSQL - http://pentestmonkey.net/cheat-sheet/sql-injection/mssql-sql-injection-cheat-sheet
Postgres - http://pentestmonkey.net/cheat-sheet/sql-injection/postgres-sql-injection-cheat-sheet
Ingres  - http://pentestmonkey.net/cheat-sheet/sql-injection/ingres-sql-injection-cheat-sheet
DB2 - http://pentestmonkey.net/cheat-sheet/sql-injection/db2-sql-injection-cheat-sheet
Informix - http://pentestmonkey.net/cheat-sheet/sql-injection/informix-sql-injection-cheat-sheet
MS Access - http://nibblesec.org/files/MSAccessSQLi/MSAccessSQLi.html