Adding OCI column indicator and handling NULLS

Signed-off-by: Sheena McCoy <sp.mccoy@modcloth.com>
Adding string truncating logic

To get rid of Oracle byte padding.

Signed-off-by: Sheena McCoy <sp.mccoy@modcloth.com>
Removing whitespace

Signed-off-by: Sheena McCoy <sp.mccoy@modcloth.com>
Fixed indp data type

As OCI wasn't handling int.

Signed-off-by: Sheena McCoy <sp.mccoy@modcloth.com>