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  1. MariaDB Server
  2. MDEV-13111

Different default value of innodb_strict_mode in MariaDB 10.1 and 10.2

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      The following table can be created in MariaDB 10.1.22:

      CREATE TABLE `a10` (
        `id` int(11) NOT NULL,
        `v1` varchar(10) DEFAULT NULL,
        `v2` varchar(10) DEFAULT NULL,
      [...]
        `v728` varchar(10) DEFAULT NULL,
        `v729` varchar(10) DEFAULT NULL,
        PRIMARY KEY (`id`)
      ) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=COMPACT;
      

      With MariaDB 10.2.6 this fails with

      ERROR 1118 (42000) at line 2: Row size too large (> 8126). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
      

      When removing one of the VARCHAR(10) lines creating the table succeeds.

      When using ROW_FORMAT=COMPRESSED and innodb_file_format=Baracuda instead of Antelope creating the table still fails, now with

      ERROR 1118 (42000) at line 2: Row size too large (> 8126). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
      

      Again, when removing one of the VARCHAR(10) columns the CREATE succeeds.

      With MariaDB 10.1.22 and ROW_FORMAT=COMPACT the CREATE even succeeds with 1000 VARCHAR(10) columns.

      I assume that this difference is caused by our switch from XtraDB to InnoDB, as I ran into this with MySQL 5.6 earlier: https://bugs.mysql.com/bug.php?id=76793

      I reported

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            greenman Ian Gilfillan
            hholzgra Hartmut Holzgraefe
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