Vector search queries are written into slow log as "not using index"

--source include/have_sequence.inc

--let $logfile= `select @@slow_query_log_file`

create table t (v vector(1) not null, vector(v));

insert into t select vec_fromtext(concat('[',seq,']')) FROM seq_1_to_100;

set log_slow_verbosity=full, log_slow_filter='not_using_index';

select vec_totext(v) from t order by vec_distance_euclidean(v,vec_fromtext('[0]')) limit 3;

--echo ### slow log ###

--exec tail -n 14 $logfile

--echo ################

# Cleanup

drop table t;

### slow log ###

# Thread_id: 4  Schema: test  QC_hit: No

# Query_time: 0.000351  Lock_time: 0.000098  Rows_sent: 3  Rows_examined: 3

# Rows_affected: 0  Bytes_sent: 88

# Pages_accessed: 0  Pages_read: 0  Pages_prefetched: 0  Pages_updated: 0  Old_rows_read: 0

# Pages_read_time: 0.0000  Engine_time: 0.0071

# Full_scan: Yes  Full_join: No  Tmp_table: No  Tmp_table_on_disk: No

# Filesort: No  Filesort_on_disk: No  Merge_passes: 0  Priority_queue: No

#

# explain: id	select_type	table	type	possible_keys	key	key_len	ref	rows	r_rows	filtered	r_filtered	Extra

# explain: 1	SIMPLE	t	index	NULL	v	6	NULL	100	3.00	100.00	100.00	

#

use `test`;

SET timestamp=1730395492;

select vec_totext(v) from t order by vec_distance_euclidean(v,vec_fromtext('[0]')) limit 3;

################