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  1. MariaDB Server
  2. MDEV-35161

UPDATE and DELETE do not use vector key

Details

    • Bug
    • Status: Open (View Workflow)
    • Major
    • Resolution: Unresolved
    • N/A
    • 11.8
    • Vector search
    • None

    Description

      Apparently vector search is not implemented for UPDATE and DELETE yet. I suppose there could be realistic use cases when it would be needed, but maybe it's not for the first release.

      --source include/have_sequence.inc
      		 
       
      		 
      create table t (pk int primary key, v vector(1) not null, comment text, vector(v));
      		 
      insert into t select seq, 0x00000000, null from seq_1_to_100;
      		 
       
      		 
      explain select comment from t order by vec_distance_euclidean(v,0x00000000) limit 10;
      		 
      explain update t set comment="best-10" order by vec_distance_euclidean(v,0x00000000) limit 10;
      		 
      explain delete from t order by vec_distance_euclidean(v,0x00000000) limit 10;
      		 
       
      		 
      # Cleanup
      		 
      drop table t;

      bb-11.6-MDEV-32887-vector eff6bc39fcb6e1f691fa08b153d9ea44b9f77b54

      		 
      explain select comment from t order by vec_distance_euclidean(v,0x00000000) limit 10;
      		 
      id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
      		 
      1	SIMPLE	t	index	NULL	v	6	NULL	10	
      explain update t set comment="best-10" order by vec_distance_euclidean(v,0x00000000) limit 10;
      		 
      id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
      		 
      1	SIMPLE	t	ALL	NULL	NULL	NULL	NULL	100	Using filesort
      		 
      explain delete from t order by vec_distance_euclidean(v,0x00000000) limit 10;
      		 
      id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
      		 
      1	SIMPLE	t	ALL	NULL	NULL	NULL	NULL	100	Using filesort

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        Issue Links

          is caused by

          New Feature - A new feature of the product, which has yet to be developed. MDEV-34939 vector search in 11.7

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

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            People

              serg Sergei Golubchik
              elenst Elena Stepanova
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              Dates

                Created:
                Updated:

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