release-25.4: sql/jsonpath: unwrap array with root key for index acceleration #156968
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Reviewable status:complete! 1 of 0 LGTMs obtained (waiting on @ZhouXing19)
Fixes: #156741 Previously, we didn't consider the case where the queried JSON is an array and the root key can unwrap one layer of the array. For example: ``` INSERT INTO json_tab VALUES (1,'[{"b": {"x": "y"}, "a": "x"}, null]'); CREATE INVERTED INDEX foo_inv ON json_tab(b); SELECT a FROM json_tab@foo_inv WHERE jsonb_path_exists(b, '$.b'); ``` This previously returned an empty result but should return 1. This commit fixes the issue by adding array-unwrapping for the root key (`$`). Release note (bug fix): Fix JSON path index acceleration with JSON array objects. Only 25.4.0 releases are affected.
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Backport 1/1 commits from #156828 on behalf of @ZhouXing19.
Fixes: #156741
Previously, we didn't consider the case where the queried JSON is an array and the root key can unwrap one layer of the array.
For example:
This previously returned an empty result but should return 1.
This commit fixes the issue by adding array-unwrapping for the root key (
$).Release note (bug fix): Fix JSON path index acceleration with JSON array objects. Only 25.4.0 releases are affected.
Release justification: bug fix.