Request a variant of load! that executes REPLACE on each row rather than INSERT.

[yygrechka]

I'm working on an application where I have a schema with an INTEGER PRIMARY KEY, and when I load in a dataframe where a value in the primary key column already exists in the table, I'd like the load! function to replace the existing row in the database with a new row from the dataframe.

I got it to work by essentially copying the load! code, and deleting the INSERT keyword, and placing the REPLACE keyword in its place. It would be really nice if the library could support this functionality.

Thanks!

[quinnj]

Great suggestion! Implemented here: #263