I’m writing some code that loads data into a database on a
routine basis (dump from legacy system daily). I’ve got a
decent amount of data, and am loading it now using ActiveRecord.
I’m finding that it’s taking quite a while longer to process
than I had hoped. To see if it’s my ruby, or ActiveRecord
that is the cause I’d like to write an implementation that
loads the data using the underlying ActiveRecord connection
rather than ActiveRecord objects.
I come from a Perl DBI and JDBC world, and would like to use
prepared statements. So I’ve gotten the underlying Mysql
connection (using ActiveRecord::Base.connection.raw_connection).
When I have code like
stmt = conn.prepare(%Q/
INSERT INTO sometable (t1,t2,t3,t4)
bind_params = [1,2,3,4]
I get an error on the execute statement. It claims I need
to send it 4 parameters. I’d like to send it an array
containing the paramaters because I build the prepared
statement based on the format of my data file. The
bind_params is then an array which is the result of a split
on a line in a data file.
So what’s the best way to handle this? Should I begin to
use Ruby’s DBI rather than just steeling the underlying