I need to extract binary blob from PostgreSQL. It's input/output by default work in hex mode.

http://www.postgresql.org/docs/current/static/datatype-binary.html

I need to extract data and write them on FS as normal file (byte [] I suppose).

Here is my question on SO http://stackoverflow.com/questions/36469669/how-to-load-unload-binary-blob-from-postgresql-with-d

There I got suggestion to do:
 md.userblob = byteaToBytes(to!string(rs.getString(4)));

But as I understand after reading docs I am getting hex string and need convert it to byte[]



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