Exports data contained in this to a string; the format is specified using the
see the export_to_file documentation for more information about the
options argument (except for the "OVERWRITE" option).
Warning: this function uses a DataModelIter iterator, and if this does not offer a random access (check using get_access_flags), the iterator will be the same as normally used to access data in this previously to calling this method, and this iterator will be moved (point to another row).
See also dump_as_string;
the format in which to export data
an array containing which columns of this will be exported, or
an array containing which rows of this will be exported, or
list of options for the export
the number of columns in
the number of rows in
a new string, use g_free when no longer needed