Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-27018

IF and COALESCE lose "json" property

Details

    • Bug
    • Status: Closed (View Workflow)
    • Critical
    • Resolution: Fixed
    • 10.2(EOL), 10.3(EOL), 10.4(EOL), 10.5, 10.6
    • 10.5.14, 10.6.6, 10.7.2, 10.8.1
    • JSON
    • None

    Description

      MariaDB [test]> select json_object('a', json_object('b', 'c'));
      		 
      +-----------------------------------------+
      		 
      | json_object('a', json_object('b', 'c')) |
      		 
      +-----------------------------------------+
      		 
      | {"a": {"b": "c"}}                       |
      		 
      +-----------------------------------------+
      		 
      1 row in set (0.000 sec)
      		 
       
      		 
      MariaDB [test]> select json_object('a', if(1, json_object('b', 'c'), json_object('e', 'f')));
      		 
      +-----------------------------------------------------------------------+
      		 
      | json_object('a', if(1, json_object('b', 'c'), json_object('e', 'f'))) |
      		 
      +-----------------------------------------------------------------------+
      		 
      | {"a": "{\"b\": \"c\"}"}                                               |
      		 
      +-----------------------------------------------------------------------+
      		 
      1 row in set (0.001 sec)
      		 
       
      		 
      MariaDB [test]> select json_object('a', coalesce(json_object('b', 'c')));
      		 
      +---------------------------------------------------+
      		 
      | json_object('a', coalesce(json_object('b', 'c'))) |
      		 
      +---------------------------------------------------+
      		 
      | {"a": "{\"b\": \"c\"}"}                           |
      		 
      +---------------------------------------------------+
      		 
      1 row in set (0.000 sec)

      other functions (CASE, NULLIF, IFNULL) are likely affected too.

      Attachments

        Issue Links

          blocks

          Bug - A problem which impairs or prevents the functions of the product. MDEV-26506 Over-quoted JSON when combining JSON_ARRAYAGG with JSON_OBJECT

          • Major - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-27350 Complex CHECK constraint loses JSON property

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MDEV-27358 Table level CHECK(JSON_VALID()) constraint loses JSON property

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MDEV-27359 Crossed JSON_VALID constraint imposes JSON property to a wrong column

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MDEV-27361 Hybrid functions with JSON arguments do not send format metadata

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MDEV-27370 UNION looses JSON property

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MDEV-13701 Nesting JSON

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-26506 Over-quoted JSON when combining JSON_ARRAYAGG with JSON_OBJECT

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-27360 Column level CHECK constraint is not SQL Standard compliant

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MDEV-27533 The result of `CONVERT(json USING ...)` is erroneously treated as JSON

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MDEV-27864 Alter table modify column for same data type copying table

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Activity

            Ascending order - Click to sort in descending order
            serg Sergei Golubchik created issue -
            serg Sergei Golubchik made changes -
            Field Original Value New Value
            Priority Major [ 3 ] Critical [ 2 ]
            serg Sergei Golubchik made changes -
            bar Alexander Barkov made changes -
            Status Open [ 1 ] Confirmed [ 10101 ]
            serg Sergei Golubchik made changes -
            Workflow MariaDB v3 [ 127273 ] MariaDB v4 [ 144427 ]
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            Status Confirmed [ 10101 ] In Progress [ 3 ]
            bar Alexander Barkov made changes -
            Assignee Alexander Barkov [ bar ] Sergei Golubchik [ serg ]
            Status In Progress [ 3 ] In Review [ 10002 ]
            serg Sergei Golubchik made changes -
            Assignee Sergei Golubchik [ serg ] Alexander Barkov [ bar ]
            Status In Review [ 10002 ] Stalled [ 10000 ]
            bar Alexander Barkov made changes -
            Status Stalled [ 10000 ] In Review [ 10002 ]
            bar Alexander Barkov made changes -
            serg Sergei Golubchik made changes -
            Assignee Alexander Barkov [ bar ] Sergei Golubchik [ serg ]
            serg Sergei Golubchik made changes -
            Assignee Sergei Golubchik [ serg ] Alexander Barkov [ bar ]
            Status In Review [ 10002 ] Stalled [ 10000 ]
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            Assignee Alexander Barkov [ bar ] Sergei Golubchik [ serg ]
            Status Stalled [ 10000 ] In Review [ 10002 ]
            serg Sergei Golubchik made changes -
            Assignee Sergei Golubchik [ serg ] Alexander Barkov [ bar ]
            Status In Review [ 10002 ] Stalled [ 10000 ]
            bar Alexander Barkov made changes -
            issue.field.resolutiondate 2022-01-21 17:13:10.0 2022-01-21 17:13:10.371
            bar Alexander Barkov made changes -
            Fix Version/s 10.5.14 [ 26809 ]
            Fix Version/s 10.6.6 [ 26811 ]
            Fix Version/s 10.7.2 [ 26813 ]
            Fix Version/s 10.8.1 [ 26815 ]
            Fix Version/s 10.2 [ 14601 ]
            Fix Version/s 10.3 [ 22126 ]
            Fix Version/s 10.4 [ 22408 ]
            Fix Version/s 10.5 [ 23123 ]
            Fix Version/s 10.6 [ 24028 ]
            Resolution Fixed [ 1 ]
            Status Stalled [ 10000 ] Closed [ 6 ]
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            Comment [ This script:

            {code:sql}
            SET profiling=1;
            SET profiling_history_size=1;

            CREATE OR REPLACE TABLE stat (state TEXT, types TEXT);

            CREATE OR REPLACE TABLE t1 (a TEXT);
            ALTER TABLE t1 MODIFY a JSON;
            INSERT INTO stat
            SELECT state, '1. TEXT to JSON' AS types FROM INFORMATION_SCHEMA.PROFILING WHERE state LIKE 'Copy to tmp table';

            ALTER TABLE t1 MODIFY a JSON;
            INSERT INTO stat
            SELECT state, '2. JSON to JSON' AS types FROM INFORMATION_SCHEMA.PROFILING WHERE state LIKE 'Copy to tmp table';

            ALTER TABLE t1 MODIFY a TEXT;
            INSERT INTO stat
            SELECT state, '3. JSON to TEXT' AS types FROM INFORMATION_SCHEMA.PROFILING WHERE state LIKE 'Copy to tmp table';

            ALTER TABLE t1 MODIFY a TEXT;
            INSERT INTO stat
            SELECT state, '4. TEXT to TEXT' AS types FROM INFORMATION_SCHEMA.PROFILING WHERE state LIKE 'Copy to tmp table';

            SELECT state, types FROM stat;
            {code}

            in 10.4.26 returns:

            {noformat}
            +-------------------+-----------------+
            | state | types |
            +-------------------+-----------------+
            | Copy to tmp table | 1. TEXT to JSON |
            | Copy to tmp table | 1. TEXT to JSON |
            | Copy to tmp table | 2. JSON to JSON |
            | Copy to tmp table | 2. JSON to JSON |
            | Copy to tmp table | 3. JSON to TEXT |
            | Copy to tmp table | 3. JSON to TEXT |
            +-------------------+-----------------
            {noformat}

            in 10.5.17 returns:
            {noformat}
            +-------------------+-----------------+
            | state | types |
            +-------------------+-----------------+
            | copy to tmp table | 1. TEXT to JSON |
            | copy to tmp table | 3. JSON to TEXT |
            +-------------------+-----------------+
            {noformat}

            Temporary table JSON->JSON conversion:
            - is created in 10.4.26
            - is not created in 10.5.17
            ]
            bar Alexander Barkov made changes -
            mariadb-jira-automation Jira Automation (IT) made changes -
            Zendesk Related Tickets 176096

            People

              bar Alexander Barkov
              serg Sergei Golubchik
              Votes:
              2 Vote for this issue
              Watchers:
              8 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Git Integration

                  Error rendering 'com.xiplink.jira.git.jira_git_plugin:git-issue-webpanel'. Please contact your Jira administrators.