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  1. MariaDB Server
  2. MDEV-29968

Functions in default values in tables with some character sets break SHOW CREATE (and mysqldump)

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      CREATE TABLE t (a CHAR(8) DEFAULT REVERSE('aha')) CHARACTER SET utf32;
       
      --echo # In MTR
      SHOW CREATE TABLE t;
      --echo # In the command line client
      --exec $MYSQL test -e "SHOW CREATE TABLE t"
      --echo # In mysqldump
      --exec $MYSQL_DUMP test > $MYSQL_TMP_DIR/1.dump
      --cat_file $MYSQL_TMP_DIR/1.dump
      DROP TABLE t;
      

      In MTR, the output of SHOW CREATE looks all right, but the client and the dump demonstrate the problem:

      10.3 92be8d20

      # In the command line client
      Table	Create Table
      t	CREATE TABLE `t` (\n  `a` char(8) DEFAULT \0\0\0r\0\0\0e\0\0\0v\0\0\0e\0\0\0r\0\0\0s\0\0\0e('aha')\n) ENGINE=MyISAM DEFAULT CHARSET=utf32 COLLATE=utf32_general_ci
       
      # In mysqldump
      ...
      CREATE TABLE `t` (
        `a` char(8) DEFAULT ;
      /*!40101 SET character_set_client = @saved_cs_client */;
      

      Reproducible on all of 10.3-10.11, and 10.2 too; seemingly with any function for a default of a string column.

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            Assignee:
            bar Alexander Barkov
            Reporter:
            elenst Elena Stepanova
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              Updated:

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