Details
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Bug
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Status: Confirmed (View Workflow)
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Major
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Resolution: Unresolved
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10.5.21
Description
CREATE TABLE `yyy_mariadb_bug` ( |
`group_id` INT(11) NULL DEFAULT NULL, |
`row_id` INT(11) NULL DEFAULT NULL, |
`varchar_val` VARCHAR(25) NULL DEFAULT NULL, |
`text_val` TEXT NULL DEFAULT NULL |
) ENGINE=InnoDB;
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INSERT INTO `yyy_mariadb_bug` (`group_id`, `row_id`, `varchar_val`, `text_val`) VALUES (1, 1, 'varchar_group_1_row_1', 'text_group_1_row_1'); |
INSERT INTO `yyy_mariadb_bug` (`group_id`, `row_id`, `varchar_val`, `text_val`) VALUES (1, 2, 'varchar_group_1_row_2', 'text_group_1_row_2'); |
INSERT INTO `yyy_mariadb_bug` (`group_id`, `row_id`, `varchar_val`, `text_val`) VALUES (2, 1, 'varchar_group_2_row_1', 'text_group_2_row_1'); |
INSERT INTO `yyy_mariadb_bug` (`group_id`, `row_id`, `varchar_val`, `text_val`) VALUES (2, 2, 'varchar_group_2_row_2', 'text_group_2_row_2'); |
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SELECT * FROM yyy_mariadb_bug; |
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SELECT group_id, JSON_OBJECT( |
'arr',(SELECT JSON_ARRAYAGG(JSON_OBJECT( |
'v',varchar_val, |
't',text_val)))) as json_arr FROM yyy_mariadb_bug GROUP BY group_id; |
Actual result:
group_id row_id varchar_val text_val
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1 1 varchar_group_1_row_1 text_group_1_row_1
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1 2 varchar_group_1_row_2 text_group_1_row_2
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2 1 varchar_group_2_row_1 text_group_2_row_1
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2 2 varchar_group_2_row_2 text_group_2_row_2
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group_id json_arr
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1 {"arr": [{"v": "varchar_group_1_row_1", "t": "text_group_1_row_1"},{"v": "varchar_group_1_row_2", "t": "text_group_1_row_1"}]} |
2 {"arr": [{"v": "varchar_group_2_row_1", "t": "text_group_2_row_1"},{"v": "varchar_group_2_row_2", "t": "text_group_2_row_1"}]} |
Expected result:
group_id json_arr
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1 {"arr": [{"v": "varchar_group_1_row_1", "t": "text_group_1_row_1"},{"v": "varchar_group_1_row_2", "t": "text_group_1_row_2"}]} |
2 {"arr": [{"v": "varchar_group_2_row_1", "t": "text_group_2_row_1"},{"v": "varchar_group_2_row_2", "t": "text_group_2_row_2"}]} |
i.e. The second element of the array should come from row 2 ...
{"v": "varchar_group_1_row_2", "t": "text_group_1_row_2"} |
{"v": "varchar_group_2_row_2", "t": "text_group_2_row_2"} |
... but instead ...
{"v": "varchar_group_1_row_2", "t": "text_group_1_row_1"} |
{"v": "varchar_group_2_row_2", "t": "text_group_2_row_1"} |
... is included - the correct varchar value from row 2 is included, but the wrong text value from row 1 is included, it should contain text_group_(1|2)_row_2 from the row 2s.