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You can use the following command:

drush -v eval 'foreach(taxonomy_get_tree(123) as $term) { taxonomy_term_delete($term->tid); }'

If it doesn't work, make sure that you clear your cache (e.g. memcached).

Or faster way by using the following dirty SQL query:

drush sqlq "DELETE FROM taxonomy_term_data WHERE vid = 123"

Where 123 is your vocabulary id which you should change.

You can get vid of your vocabulary name by the following command:

drush sqlq "SELECT name, vid FROM taxonomy_vocabulary WHERE name = 'vocabulary_name'"

See also:

• How do I delete all terms in a vocabulary?

You can use the following command.

drush -v eval 'foreach(taxonomy_get_tree(123) as $term) { taxonomy_term_delete($term->tid); }'

If it doesn't work, make sure that you clear your cache (e.g. memcached).

A faster way is using the following dirty SQL query, where 123 is the ID of the vocabulary you should change.

drush sqlq "DELETE FROM taxonomy_term_data WHERE vid = 123"

You can get the vid from the vocabulary name with the following command.

drush sqlq "SELECT name, vid FROM taxonomy_vocabulary WHERE name = 'vocabulary_name'"

You can use the following command:

drush -v eval 'foreach(taxonomy_get_tree(123) as $term) { taxonomy_term_delete($term->tid); }'

If it doesn't work, make sure that you clear your cache (e.g. memcached).

Or faster way by using the following dirty SQL query:

drush sqlq "DELETE FROM taxonomy_term_data WHERE vid = 123"

Where 123 is your vocabulary id which you should change.

You can get vid of your vocabulary name by the following command:

drush sqlq "SELECT name, vid FROM taxonomy_vocabulary WHERE name = 'vocabulary_name'"

See also:

• How do I delete all terms in a vocabulary?

You can use the following command:

drush -v eval 'foreach(taxonomy_get_tree(123) as $term) { taxonomy_term_delete($term->tid); }'

If it doesn't work, make sure that you clear your cache (e.g. memcached).

Or faster way by using the following dirty SQL query:

drush sqlq "DELETE FROM taxonomy_term_data WHERE vid = 123"

Where 123 is your vocabulary id which you should change.

You can get vid of your vocabulary name by the following command:

drush sqlq "SELECT name, vid FROM taxonomy_vocabulary WHERE name = 'vocabulary_name'"

See also:

• How do I delete all terms in a vocabulary?

You can use the following command:

drush -v eval 'foreach(taxonomy_get_tree(123) as $term) { taxonomy_term_delete($term->tid); }'

If it doesn't work, then it could have some problem with caching.

Or faster way by using the following dirty SQL query:

drush sqlq "DELETE FROM taxonomy_term_data WHERE vid = 123"

Where 123 is your vocabulary id which you should change.

You can get vid of your vocabulary name by the following command:

drush sqlq "SELECT name, vid FROM taxonomy_vocabulary WHERE name = 'vocabulary_name'"

See also:

• How do I delete all terms in a vocabulary?

You can use the following command:

drush -v eval 'foreach(taxonomy_get_tree(123) as $term) { taxonomy_term_delete($term->tid); }'

If it doesn't work, make sure that you clear your cache (e.g. memcached).

Or faster way by using the following dirty SQL query:

drush sqlq "DELETE FROM taxonomy_term_data WHERE vid = 123"

Where 123 is your vocabulary id which you should change.

You can get vid of your vocabulary name by the following command:

drush sqlq "SELECT name, vid FROM taxonomy_vocabulary WHERE name = 'vocabulary_name'"

See also:

• How do I delete all terms in a vocabulary?