MySQL Workbench: Error in query (1064): Syntax error near 'VISIBLE' at line 1

Any ideas why VISIBLE below is causing an issue?

CREATE TABLE IF NOT EXISTS `setting` (
  `uuid` INT(10) NOT NULL,
  `type` VARCHAR(255) NOT NULL,
  `code` VARCHAR(255) NOT NULL COMMENT 'An unique name.',
  `value` MEDIUMTEXT NULL DEFAULT NULL,
  `comment` LONGTEXT NULL DEFAULT NULL,
  `created_on` INT UNSIGNED NOT NULL,
  `updated_on` INT UNSIGNED NOT NULL,
  PRIMARY KEY (`uuid`))
ENGINE = MyISAM
DEFAULT CHARACTER SET = utf8;

CREATE UNIQUE INDEX `name_UNIQUE` ON `setting` (`code` ASC) VISIBLE;

CREATE UNIQUE INDEX `uuid_UNIQUE` ON `setting` (`uuid` ASC) VISIBLE;

Errors:

CREATE UNIQUE INDEX name_UNIQUE ON setting (code ASC) VISIBLE Error in query (1064): Syntax error near 'VISIBLE' at line 1

CREATE UNIQUE INDEX uuid_UNIQUE ON setting (uuid ASC) VISIBLE Error in query (1064): Syntax error near 'VISIBLE' at line 1

No error if I remove VISIBLE but MySQL Workbench 8.0.12 auto generates that. How can I stop MySQL Workbench from doing that?

My MySQL info in my Ubuntu 18.04:

MySQL version: 5.7.23-0ubuntu0.18.04.1 through PHP extension MySQLi

The problem here is the difference in syntax across different MySQL server versions. It seems that MySQL Workbench 8.0.12 is auto-generating CREATE UNIQUE INDEX statement for the MySQL server version 8.0.

From the MySQL Server 8.0 Docs, the syntax for CREATE INDEX is:

CREATE [UNIQUE | FULLTEXT | SPATIAL] INDEX index_name
    [index_type]
    ON tbl_name (key_part,...)
    [index_option]
    [algorithm_option | lock_option] ...

key_part: {col_name [(length)] | (expr)} [ASC | DESC]

index_option:
    KEY_BLOCK_SIZE [=] value
  | index_type
  | WITH PARSER parser_name
  | COMMENT 'string'
  | {VISIBLE | INVISIBLE}  /* Notice the option of VISIBLE / INVISIBLE */

index_type:
  USING {BTREE | HASH}

However, this option of {VISIBLE | INVISIBLE} is not available in the MySQL Server 5.7. From Docs:

CREATE [UNIQUE | FULLTEXT | SPATIAL] INDEX index_name
    [index_type]
    ON tbl_name (key_part,...)
    [index_option]
    [algorithm_option | lock_option] ...

key_part:
    col_name [(length)] [ASC | DESC]

index_option:
    KEY_BLOCK_SIZE [=] value
  | index_type
  | WITH PARSER parser_name
  | COMMENT 'string'   /* No option of VISIBLE / INVISIBLE */

index_type:
    USING {BTREE | HASH}

If you are not looking to upgrade to latest version of MySQL; you can disable this feature of auto-generating with VISIBLE / INVISIBLE index:

In MySQL Workbench:

Go to:

Edit > Preferences > Modeling > MySQL.

Then, set the "Default Target MySQL Version" to 5.7

Check the screenshot below:

Alternative version to 5.7 or 6.3. I used 6.3. On Model>Model Options..>MySql>6.3