Details
-
Bug
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Status: Closed (View Workflow)
-
Major
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Resolution: Fixed
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10.2
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None
Description
|
MariaDB 10.2 |
MariaDB [test]> SELECT JSON_EXTRACT( '{"foo":"bar"}', '$[*].*' ); |
+-------------------------------------------+ |
| JSON_EXTRACT( '{"foo":"bar"}', '$[*].*' ) | |
+-------------------------------------------+ |
| ["bar"] | |
+-------------------------------------------+ |
1 row in set (0.00 sec) |
I think it is incorrect and there should be NULL, since $[*] is supposed to represent array values, but there is no array in the JSON text.
It's also inconsistent with this result:
|
MariaDB 10.2 |
MariaDB [test]> SELECT JSON_EXTRACT( '{"foo":"bar"}', '$[*]' ); |
+-----------------------------------------+ |
| JSON_EXTRACT( '{"foo":"bar"}', '$[*]' ) | |
+-----------------------------------------+ |
| NULL | |
+-----------------------------------------+ |
1 row in set (0.00 sec) |
MySQL returns NULL for both queries, however in this case I don't want to use it as a baseline, because its behavior with these pseudo-arrays is even more inconsistent. Please just use documentation, standards and common sense to determine what the correct result should be.