177
177
/* index_merge currently doesn't support "using index" at all */
178
178
cursor->extra(HA_EXTRA_NO_KEYREAD);
180
read_record.init_read_record(session, head, (optimizer::SqlSelect*) 0, 1, 1);
180
if ((result= read_record.init_read_record(session, head, (optimizer::SqlSelect*) 0, 1, 1)))