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  1. MariaDB Server
  2. MDEV-38306

Optimizer support for Multi-Valued indexes over JSON data & new Full Text Search

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    Description

      After MDEV-25848 implements multi-value indexes, the optimizer could use those to perform efficient searches for JSON data.

      This will achieve either of the goals:

      Goal 1: index do searches like in MySQL:

      create index idx1 on  t1 ((cast(a->'$.arr' as unsigned array)));
      		 
      explain select * from t101 where 4 member of (a->'$.arr');

      (TODO: does this have MDEV-13594 (support for '->' syntax) as a pre-requisite or not?)

      Goal 2: Support index lookups for generic JSON predicates like 

      JSON_VALUE(js_column, '$.attribute_name') = 'value'

      WHERE column->json_attr = 'foo';

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          is blocked by

          New Feature - A new feature of the product, which has yet to be developed. MDEV-25848 Support for Multi-Valued Indexes

          • Critical - Crashes, loss of data, severe memory leak.
          • Open
          relates to

          New Feature - A new feature of the product, which has yet to be developed. MDEV-13594 Support for JSON operators column->path and column->>path

          • Major - Major loss of function.
          • Open

          Task - A task that needs to be done. MDEV-37288 JSON Comparator: does MariaDB need one?

          • Major - Major loss of function.
          • Closed

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              ycp Yuchen Pei
              psergei Sergei Petrunia
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                Updated:

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