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

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:

MySQL WorkBench Modeling

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