Details
-
Bug
-
Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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N/A
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None
Description
|
bb-10.5-hf 6dfb3fab2 |
MariaDB [test]> select * from json_table('{"a":"foo","b":"bar"}', '$' columns (v varchar(20) path '$.*')) as jt; |
+------+ |
| v |
|
+------+ |
| foo |
|
+------+ |
1 row in set (0.002 sec) |
|
|
MariaDB [test]> select * from json_table('{"a":"foo","b":"bar"}', '$' columns (v varchar(20) path '$.*' default '100' on error)) as jt; |
+------+ |
| v |
|
+------+ |
| foo |
|
+------+ |
1 row in set (0.002 sec) |
The value extracted from JSON text above is an array:
MariaDB [test]> select json_extract('{"a":"foo","b":"bar"}','$.*'); |
+---------------------------------------------+ |
| json_extract('{"a":"foo","b":"bar"}','$.*') | |
+---------------------------------------------+ |
| ["foo", "bar"] | |
+---------------------------------------------+ |
1 row in set (0.001 sec) |
Based on MySQL documentation (and less obviously on the standard), only scalar values are allowed, and an error should be returned upon an array, like this:
|
MySQL 8.0.19 |
MySQL [test]> select * from json_table('{"a":"foo","b":"bar"}', '$' columns (v varchar(20) path '$.*')) as jt1 limit 2; |
+------+ |
| v |
|
+------+ |
| NULL | |
+------+ |
1 row in set (0.000 sec) |
|
|
MySQL [test]> select * from json_table('{"a":"foo","b":"bar"}', '$' columns (v varchar(20) path '$.*' default '100' on error)) as jt1; |
+------+ |
| v |
|
+------+ |
| 100 |
|
+------+ |
1 row in set (0.001 sec) |
Attachments
Issue Links
- relates to
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MDEV-17399 Add support for JSON_TABLE
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- Closed
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