Error: #1071 - Specified key was too long; max key length is 1000 bytes - mysql 5.0.91

Question

I am using mysql 5.0.91 and I need to save URLs ( some are small and some are very long ). I want to use varchar(2000) but I get an error:

#1071 - Specified key was too long; max key length is 1000 bytes

What is the best way to save URLs on my hosting with mysql 5.0.91 ?

See if any of these are useful (always research your error message): http://stackoverflow.com/search?q=+%231071+-+Specified+key+was+too+long%3B+max+key+length+is+1000+bytes or http://stackoverflow.com/questions/tagged/mysql-error-1071 — Wesley Murch, May 17 '12 at 19:48
You're kind of asking two separate questions. Best way to store URL: http://stackoverflow.com/a/219664/398242 Reason for your error and how to fix it: http://stackoverflow.com/questions/1814532/1071-specified-key-was-too-long-max-key-length-is-767-bytes/1814594#1814594 — Wesley Murch, May 17 '12 at 19:57

score 5 · Answer 1 · answered Mar 21 '13 at 07:50

Do you use unique=True on your urls column? MySQL is building a unique index on that column, and the number of bytes that it uses per character varies depending on the encoding.

If it is UTF-16, for example, it will use 2 bytes per character, so your varchar(2000) column would be 4000 bytes, and as the error message says, the max key length is 1000 bytes.

So you can switch to UTF-8 and use varchar(900) instead to fix this problem.

score 0 · Answer 2 · answered Mar 04 '13 at 15:20

0

I ran I that error because I choose utf-16 collation in db - switched back to utf-8 general-ci - and it was gone.

answered Mar 04 '13 at 15:20

Phil

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score 0 · Answer 3 · edited Mar 11 '17 at 14:15

0

Rewrite your email field like:

$table->string('email', 250)->unique();

edited Mar 11 '17 at 14:15

Floern

33,559
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answered Mar 11 '17 at 13:35

Agidigbi Ayodeji Victor

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score 0 · Answer 4 · answered Mar 25 '17 at 08:46

Laravel uses the utf8mb4 character set by default, which includes support for storing "emojis" in the database. If you are running a version of MySQL older than the 5.7.7 release or MariaDB older than the 10.2.2 release, you may need to manually configure the default string length generated by migrations in order for MySQL to create indexes for them. You may configure this by calling the Schema::defaultStringLength method within your AppServiceProvider:

use Illuminate\Support\Facades\Schema;

/**
 * Bootstrap any application services.
 *
 * @return void
 */
public function boot()
{
    Schema::defaultStringLength(191);
}

Error: #1071 - Specified key was too long; max key length is 1000 bytes - mysql 5.0.91

4 Answers4

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