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  1. MariaDB Server
  2. MDEV-14897

After UPDATE of instant ADD COLUMN, PRIMARY KEY accepts duplicates

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    Description

      --source include/have_innodb.inc
      		 
      CREATE TABLE t1 (t TEXT, PRIMARY KEY (t(1))) ENGINE=InnoDB;
      		 
      INSERT INTO t1 SET t='aa';
      		 
      ALTER TABLE t1 ADD COLUMN b INT;
      		 
      UPDATE t1 SET b = 1;
      		 
      INSERT INTO t1 SET t='ab';
      		 
      SELECT * FROM t1;
      		 
      DROP TABLE t1;

      The second INSERT should fail due to the duplicate column prefix key 'a', but instead the record will be inserted. With ROW_FORMAT=REDUNDANT the operation will fail as expected:

      mysqltest: At line 6: query 'INSERT INTO t1 SET t='ab'' failed: 1062: Duplicate entry 'a' for key 'PRIMARY'

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          Bug - A problem which impairs or prevents the functions of the product. MDEV-14840 Assertion `!log->same_pk' failed in row_log_table_apply_delete

          • Major - Major loss of function.
          • Closed
          duplicates

          Bug - A problem which impairs or prevents the functions of the product. MDEV-14837 Duplicate primary keys are allowed after ADD COLUMN / UPDATE

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

          Task - A task that needs to be done. MDEV-11369 Instant add column for InnoDB

          • Major - Major loss of function.
          • Closed

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              marko Marko Mäkelä
              marko Marko Mäkelä
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                Updated:
                Resolved:

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