fix: display inverted and fulltext index in show index

[lyang24]

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#5160

What's changed and what's your intention?

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Please explain IN DETAIL what the changes are in this PR and why they are needed:

• Summarize your change (mandatory)
  display inverted and fulltext index in show index
• How does this PR work? Need a brief introduction for the changed logic (optional)
• Describe clearly one logical change and avoid lazy messages (optional)
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• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR requires documentation updates.

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 41 lines in your changes missing coverage. Please review.

Project coverage is 83.79%. Comparing base (7d1bcc9) to head (bc6ccdf).
Report is 22 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5169      +/-   ##
==========================================
- Coverage   84.04%   83.79%   -0.25%     
==========================================
  Files        1175     1175              
  Lines      218960   218977      +17     
==========================================
- Hits       184015   183496     -519     
- Misses      34945    35481     +536     

[lyang24]

I found something maybe worth looking into if i create the test table like this

CREATE TABLE IF NOT EXISTS system_metrics (
    ...
    desc1 STRING,
    desc2 STRING FULLTEXT,
    ts TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY(host, idc),
    INVERTED INDEX(idc),
    INVERTED INDEX(desc1),
    INVERTED INDEX(desc2),
    TIME INDEX(ts)
);

the desc2 has both fulltext index and inverted index, but it do not have inverted index in column data

SHOW INDEX FROM system_metrics;

+----------------+------------+-----------------------------------------+--------------+-------------+-----------+-------------+----------+--------+------+--------------------------------------------------------+---------+---------------+---------+------------+
| Table          | Non_unique | Key_name                                | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type                                             | Comment | Index_comment | Visible | Expression |
+----------------+------------+-----------------------------------------+--------------+-------------+-----------+-------------+----------+--------+------+--------------------------------------------------------+---------+---------------+---------+------------+
| system_metrics | 1          | FULLTEXT INDEX                          | 7            | desc2       | A         |             |          |        | YES  | greptime-fulltext-index-v1                             |         |               | YES     |            |

however if i construct the table with INVERTED INDEX(idc, desc1, desc2) it magically worked.

[killme2008]

I found something maybe worth looking into if i create the test table like this

CREATE TABLE IF NOT EXISTS system_metrics (
    ...
    desc1 STRING,
    desc2 STRING FULLTEXT,
    ts TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY(host, idc),
    INVERTED INDEX(idc),
    INVERTED INDEX(desc1),
    INVERTED INDEX(desc2),
    TIME INDEX(ts)
);

the desc2 has both fulltext index and inverted index, but it do not have inverted index in column data

SHOW INDEX FROM system_metrics;

+----------------+------------+-----------------------------------------+--------------+-------------+-----------+-------------+----------+--------+------+--------------------------------------------------------+---------+---------------+---------+------------+
| Table          | Non_unique | Key_name                                | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type                                             | Comment | Index_comment | Visible | Expression |
+----------------+------------+-----------------------------------------+--------------+-------------+-----------+-------------+----------+--------+------+--------------------------------------------------------+---------+---------------+---------+------------+
| system_metrics | 1          | FULLTEXT INDEX                          | 7            | desc2       | A         |             |          |        | YES  | greptime-fulltext-index-v1                             |         |               | YES     |            |

however if i construct the table with INVERTED INDEX(idc, desc1, desc2) it magically worked.

Looks like it's a bug, it should not allow more than one inverted index constraint. cc @zhongzc

[killme2008]

LGTM. Thank you

[evenyag]

Others LGTM