Deallocates all memory associated to the given #GdaBlob.
Converts all the non printable characters of blob->data into the \xxx representation where xxx is the octal representation of the byte, and the '' (backslash) character is converted to "\".
a maximum len used to truncate, or 0 for no maximum length
Represents some binary data, accessed through a #GdaBlobOp object.
opis generally set up by database providers when giving access to an existing BLOB in a database, but can be modified if needed using gda_blob_set_op().