A quick Question. Suppose I have the following two queries:
SELECT TOP 2 * FROM Persons;
and
SELECT * FROM Persons limit 2;
If you are using SQL Server use TOP if you are using MySQL or Postgres use Limit!
TOP
MySQL
Postgres
Limit
AFAIK there is no product that currently supports both. Here's one list of current implementations and here's another (covers more products but in less detail)