Oracle

One of the little things that make working with Postgres easier than with other database products, are its error messages. They usually include not only the actual error but also a “Hint” that more often than not actually helps to fix the problem.

Sometimes it’s necessary to run dynamic SQL, but it’s not always possible (or sensible) to write a stored procedure just for that.

Postgres and Oracle both support functions that can run queries using dynamic SQL and return the result of those queries as XML.