Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Duplicate
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11.4.2
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None
Description
Run this query:
select a, b, (
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select json_arrayagg(i)
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from json_table(json_array(a, b), '$[*]' columns (i int path '$')) t
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)
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from (select 1 a, 2 b union all select 3 a, 4 b) as t
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order by a;
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MariaDB returns this:
|a |b |json_arrayagg|
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|---|---|-------------|
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|1 |2 |[1, 2] |
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|3 |4 |[1, 2] |
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But this is expected
|a |b |json_arrayagg|
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|---|---|-------------|
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|1 |2 |[1, 2] |
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|3 |4 |[3, 4] |
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It looks as though the correlated subquery is cached. A workaround is to disable the cache with a non-deterministic function, e.g.:
select a, b, (
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select json_arrayagg(i)
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from json_table(json_array(a, b), '$[*]' columns (i int path '$')) t
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where rand() is not null
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)
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from (select 1 a, 2 b union all select 3 a, 4 b) as t
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order by a;
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Now, the result is correct
Attachments
Issue Links
- duplicates
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- Closed
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