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  1. MariaDB Server
  2. MDEV-14769

Temporary table can be altered into system versioning + system_versioning_alter_history has no effect

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      Creation of a temporary table with system versioning is prohibited:

      MariaDB [test]> CREATE OR REPLACE TEMPORARY TABLE t1 (i INT) WITH SYSTEM VERSIONING;
      ERROR 4146 (HY000): WITH SYSTEM VERSIONING prohibited for TEMPORARY tables
      

      However, such a table can be created in two steps:

      MariaDB [test]> CREATE OR REPLACE TEMPORARY TABLE t1 (i INT);
      Query OK, 0 rows affected (0.01 sec)
       
      MariaDB [test]> ALTER TABLE t1 ADD SYSTEM VERSIONING;
      Query OK, 0 rows affected (0.01 sec)
      Records: 0  Duplicates: 0  Warnings: 0
      

      Please also note that system_versioning_alter_history has no effect here:

      MariaDB [test]> CREATE OR REPLACE TEMPORARY TABLE t1 (i INT);
      Query OK, 0 rows affected (0.01 sec)
       
      MariaDB [test]> SET system_versioning_alter_history= ERROR;
      Query OK, 0 rows affected (0.00 sec)
       
      MariaDB [test]> ALTER TABLE t1 ADD SYSTEM VERSIONING;
      Query OK, 0 rows affected (0.01 sec)
      Records: 0  Duplicates: 0  Warnings: 0
      

      Same test case for copy-pasting

      --error ER_VERS_TEMPORARY
      CREATE OR REPLACE TEMPORARY TABLE t1 (i INT) WITH SYSTEM VERSIONING;
       
      CREATE OR REPLACE TEMPORARY TABLE t1 (i INT);
       
      SET system_versioning_alter_history= ERROR;
      --error ER_VERS_TEMPORARY
      ALTER TABLE t1 ADD SYSTEM VERSIONING;
      

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              Assignee:
              kevg Eugene Kosov (Inactive)
              Reporter:
              elenst Elena Stepanova
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                Updated:
                Resolved:

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