The current implementation of database/sql doesn't provide a way to insert multiple rows
at once, without getting to the wire upon every call to

db.Exec

There are APIs outside which either provide a general way for bulk actions

cf.  SQLBulkCopy of ADO.NET 2.0 [1]

or has a specifier upto how many statements should be grouped together

cf. Batch Update of ADO.NET 2.0 DataAdapter Object [1]

or simply supports an array to be bound to Exec, open which Exec iterates internally,
preventing execessive wire communication. [2]



[1] Codeproject, "Multiple Ways to do Multiple Inserts"
http://www.codeproject.com/Articles/25457/Multiple-Ways-to-do-Multiple-Inserts
[2] Python PEP 249 -- Python Database API Specification v2.0
http://www.python.org/dev/peps/pep-0249/#executemany