DB2 -- select * from table fetch first 10 rows only
Informix, InterBase/Firebird, SKIP -- select first 10 * from table
Microsoft SQL Server and Access -- select top 10 * from table
MySQL, PostgreSQL, SQLite, HSQL/H2 -- select * from table limit 10
Oracle -- select * from table where rownum <= 10
Fonte: http://pontodebug.blogspot.com.br/2011/01/como-limitar-o-numero-de-registros.html