In big databases querying on the EAN can take a while, it would be nice to have an index on this column as we have on other columns with standard numbers in this table already: 196 PRIMARY KEY (`biblioitemnumber`), 197 KEY `bibinoidx` (`biblioitemnumber`), 198 KEY `bibnoidx` (`biblionumber`), 199 KEY `itemtype_idx` (`itemtype`), 200 KEY `isbn` (`isbn`(255)), 201 KEY `issn` (`issn`(255)), 202 KEY `publishercode` (`publishercode`),
*** This bug has been marked as a duplicate of bug 13766 ***