Hi Meng, for efficiently, i.e., to avoid a file copy, MonetDB's binary copy into simply moves(^) the user-provided and to be loaded files into its dbfarm. Thus, if you need to preserve a copy of the files you provide, you need to do so yourself before executing a binary copy into. Best, Stefan (^) 1) The actual behavior (move) is actually different than the copy that the documentation at http://www.monetdb.org/Documentation/Cookbooks/SQLrecipes/BinaryBulkLoad suggests. We need to fix the latter. 2) The actual behavior currently differs between data types; for numerical types, the user-provided files are moved as explained above; for stings, the files are read and processed, i.e., the used-provided file remains in place as-is. We need to consider unifying this behavior, e.g., by deleting also the user provided files for strings once they have been processed/loaded. 3) In case the copy into file, e.g., due to a failing sanity check after the file is moved, that data is factually lost, i.e., the files are gone, but no data is loaded into the database; we need to either document this clearly, or make the implementation behave like a transaction. ----- Original Message -----

can i have the file reserved?

Thanks Meng _______________________________________________ users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list

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