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DanThiffault/bulk_insert.rb

Created February 8, 2016 22:28
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Bulk Arel inserts
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bulk_insert.rb
bookMergeBlocks = BookMergeBlock.arel_table
im = Arel::InsertManager.new Arel::Table.engine
im.into bookMergeBlocks
im.select @raw_books.select(book.id,:book_id).uniq.arel
im.columns << bookMergeBlocks[:master_book_id]
im.columns << bookMergeBlocks[:duplicate_book_id]
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