Finding the original photo file in the iPhoto Library database
Using iPhoto’s SQLite3 database you can get the relative path to the original photo in the iPhoto library for any image in the sqPhotoInfo table. To do so you must join from the sqPhotoInfo table to the sqFileImage table and finally to the sqFileInfo table.
select pi.primaryKey, pi.archiveFilename, fl.relativepath from SqPhotoInfo as pi join SqFileImage as fi on pi.primaryKey = fi.photoKey join sqFileInfo as fl on fl.primaryKey = fi.sqFileInfo where fl.relativePath like 'Originals%'3 months ago