dresende/node-sql-query — pull request #30 by lselvy (2014-02-20 04:17:41+00:00)
Title: #29 - Allows null and undefined to be treated differently.

This allows ```undefined``` and ```null``` differently.

If the value for a column is ```undefined``` the ```DEFAULT``` keyword is used. This will mean PostgreSQL will most likely insert a null, but if there is a server side definition of the default property, PostgreSQL will implement that default.

In this way PostgreSQL serial fields will act like the MySQL autogenerated key fields.