taxonomy - incorrect query in update or insert term to increase term_group

[michelwp]

In both functions (wp_insert_term and wp_update_term, the SQL query - to increase the term_group when creating an alias of a term not yet in a term_group - is incorrect.

The query was

SELECT MAX(term_group) FROM $wpdb->terms GROUP BY term_group

but must be

SELECT MAX(term_group) FROM $wpdb->terms

GROUP BY is not here necessary !

(I am testing taxonomy.php script and features to create a multilingual dictionary of terms that can be used in themes or elsewhere)

About alias_of features : See also Trac #5230

[michelwp]

Please find enclose the comparison of taxonomy in diff (I found a easy way to make it) between 2.3 original (_o) and the current running on our public test web site dev.xiligroup.com... (it is summary of #5230 and this one #5240).
Michel

[ryan]

(In [6285]) Remove unnecessary GROUP BY when getting max term_group. Props michelwp. fixes #5240