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  1. MariaDB Server
  2. MDEV-8358

ALTER TABLE .. ADD PRIMARY KEY IF NOT EXISTS -> ERROR 1068 (42000): Multiple primary key defined

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          MariaDB [test]> CREATE TABLE `market_deductions` (
    ->   `event_id` bigint(20) unsigned NOT NULL DEFAULT '0',
    ->   `market_id` bigint(20) unsigned NOT NULL DEFAULT '0',
    ->   PRIMARY KEY (`event_id`,`market_id`)
    -> ) ENGINE=InnoDB DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC;
Query OK, 0 rows affected (0.01 sec)

MariaDB [test]>  ALTER TABLE market_deductions ADD PRIMARY KEY IF NOT EXISTS event_id (event_id,market_id);
ERROR 1068 (42000): Multiple primary key defined

          Seems IF NOT EXISTS is not really checked.

          Haven't checked if 10.0.22 has fixed this as part of MDEV-8212

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                  • Assignee:
                    holyfoot Alexey Botchkov
                    Reporter:
                    danblack Daniel Black
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                    • Created:
                      Updated: