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Mysql Error 1071 Max Key Length

here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more mysql innodb increase max key length about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users specified key was too long; max key length is 767 bytes mysql Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping mysql innodb_large_prefix each other. Join them; it only takes a minute: Sign up #1071 - Specified key was too long; max key length is 767 bytes up vote 194 down vote favorite 43 When I executed the following command: ALTER

Index Column Size Too Large. The Maximum Column Size Is 767 Bytes.

TABLE `mytable` ADD UNIQUE ( `column1` , `column2` ); I got this error message: #1071 - Specified key was too long; max key length is 767 bytes Information about column1 and column2: column1 varchar(20) utf8_general_ci column2 varchar(500) utf8_general_ci I think varchar(20) only requires 21 bytes while varchar(500) only requires 501 bytes. So the total bytes are 522, less than 767. So why did I get the error message? #1071 - Specified key was too long; max key mysql max key length length is 767 bytes mysql byte varchar mysql-error-1071 share|improve this question edited May 23 '11 at 21:32 OMG Ponies 199k37360417 asked Nov 29 '09 at 3:18 Steven 5,2993480112 Because its not 520 bytes, but rather, 2080 bytes, which far exceeds 767 bytes, you could do column1 varchar(20) and column2 varchar(170). if you want a character/byte equiv, use latin1 –Rahly Dec 18 '15 at 0:21 add a comment| 17 Answers 17 active oldest votes up vote 137 down vote accepted 767 bytes is the stated prefix limitation for InnoDB tables - its 1,000 bytes long for MyISAM tables. According to the response to this issue, you can get the key to apply by specifying a subset of the column rather than the entire amount. IE: ALTER TABLE `mytable` ADD UNIQUE ( column1(15), column2(200) ); Tweak as you need to get the key to apply, but I wonder if it would be worth it to review your data model regarding this entity to see if there's improvements that would allow you to implement the intended business rules without hitting the MySQL limitation. share|improve this answer edited Oct 15 '14 at 20:20 The Alchemist 2,6901017 answered Nov 29 '09 at 3:52 OMG Ponies 199k37360417 To apply by specifying a subset of the column rather than the entire amount. A good solution. –Steven Nov 29 '09 at 4:14

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Mysql Max Key Length Is 3072 Bytes

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Django.db.utils.operationalerror: (1071, 'specified Key Was Too Long; Max Key Length Is 767 Bytes')

Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. http://stackoverflow.com/questions/1814532/1071-specified-key-was-too-long-max-key-length-is-767-bytes Join them; it only takes a minute: Sign up #1071 - Specified key was too long; max key length is 1000 bytes up vote 25 down vote favorite 13 I know questions with this title have been answered before, but please do read on. I've read thoroughly all the other questions/answers on this error before posting. I am getting http://stackoverflow.com/questions/8746207/1071-specified-key-was-too-long-max-key-length-is-1000-bytes the above error for the following query: CREATE TABLE IF NOT EXISTS `pds_core_menu_items` ( `menu_id` varchar(32) NOT NULL, `parent_menu_id` int(32) unsigned DEFAULT NULL, `menu_name` varchar(255) DEFAULT NULL, `menu_link` varchar(255) DEFAULT NULL, `plugin` varchar(255) DEFAULT NULL, `menu_type` int(1) DEFAULT NULL, `extend` varchar(255) DEFAULT NULL, `new_window` int(1) DEFAULT NULL, `rank` int(100) DEFAULT NULL, `hide` int(1) DEFAULT NULL, `template_id` int(32) unsigned DEFAULT NULL, `alias` varchar(255) DEFAULT NULL, `layout` varchar(255) DEFAULT NULL, PRIMARY KEY (`menu_id`), KEY `index` (`parent_menu_id`,`menu_link`,`plugin`,`alias`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; Does anyone have idea why and how to fix it? The catch is - this same query works perfectly on my local machine, and worked as well on my previous host. Btw.it's from a mature project - phpdevshell - so I'd guess these guys know what they are doing, although you never know. Any clue appreciated. I'm using phpMyAdmin. mysql phpmyadmin mysqldump share|improve this question asked Jan 5 '12 at 16:42 CodeVirtuoso 2,10883255 add a comment| 5 Answers 5 active oldest votes up vote 54 down vote accepted As @Devart says, the total length of your ind

CI MySQL Sandbox MariaDB data chef Adtech Twitter GitHub RSS Using Innodb_large_prefix to Avoid ERROR 1071 If you've ever tried to add an index that includes a long varchar column to an InnoDB table in MySQL, you may have seen this error: 1 ERROR 1071 (42000): Specified http://mechanics.flite.com/blog/2014/07/29/using-innodb-large-prefix-to-avoid-error-1071/ key was too long; max key length is 767 bytes The character limit depends on the character set you use. For example if you use latin1 then the largest column you can index is varchar(767), but if you use utf8 then the limit is varchar(255). There is also a separate 3072 byte limit per index. The 767 byte limit is per column, so you can include multiple columns (each 767 bytes or smaller) up to max key 3072 total bytes per index, but no column longer than 767 bytes. (MyISAM is a little different. It has a 1000 byte index length limit, but no separate column length limit within that). One workaround for these limits is to only index a prefix of the longer columns, but what if you want to index more than 767 bytes of a column in InnoDB? In that case you should consider using innodb_large_prefix, which was introduced in max key length MySQL 5.5.14 and allows you to include columns up to 3072 bytes long in InnoDB indexes. It does not affect the index limit, which is still 3072 bytes as quoted in the manual: The InnoDB internal maximum key length is 3500 bytes, but MySQL itself restricts this to 3072 bytes. This limit applies to the length of the combined index key in a multi-column index. Read on for details and examples about innodb_large_prefix. Here are a few pre-requisites for using innodb_large_prefix: At the database level you have to use innodb_file_format=BARRACUDA At the table level you have to use ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED The default file format is still Antelope for backwards compatibility, and the default row format is COMPACT. You can set both innodb_file_format and innodb_large_prefix dynamically, but you should also set them in my.cnf so they survive a restart. Here's an example. If I try to create this table with innodb_large_prefix disabled I get an error: 1 2 3 4 5 6 7 8 mysql> create table if not exists utf8_test ( -> day date not null, -> product_id int not null, -> dimension1 varchar(500) character set utf8 collate utf8_bin not null, -> dimension2 varchar(500) character set utf8 collate utf8_bin not null, -> unique index unique_index (day, product_id, dimension1, dimension2) -> ) ENGINE=I

 

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database error while doing query p version roll out and QA raquo phpList maintainer needed raquo UI lite phpList plugins raquo phpList API raquo rssmanager phpList org My View View Issues Change Log RoadmapView Issue error specified key was too long max key length is bytes Details Jump to Notes Print IDProjectCategoryView StatusDate SubmittedLast Update phplistAll Otherpublic - - - - ReporterdanieleintPrioritynormalSeverityminorReproducibilityalwaysStatusresolvedResolutionfixedPlatform-OS-OS Version-Product Version Target Error hy Index Column Size Too Large The Maximum Column Size Is Bytes Version XFixed in Version Summary Unable to install with UTF- database using MySql DescriptionMysql limit the index lenght to bytes The Error

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error sqlstate er too long key p exceeded the limit of the maximum error specified key was too long max key length is bytes key length A key can not be longer than bytes error hy index column size too large the maximum column size is bytes bytes for InnoDB Please note that this limit is set in bytes not in characters So if you use a multi-byte Innodb large prefix character set you can get this error even if the sum of column lengths is less than because column length is defined in characters Below is an example of

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Fusion Pro Error p Register FAQ Calendar Today's Posts Search Notices If you are not registered or logged in you can view the forums but you cannot post to them The latest version of Error Specified Key Was Too Long Max Key Length Is Bytes FusionPro VDP is Windows and Mac span Adobe Acrobat DC Adobe InDesign specified key was too long max key length is bytes CC Mac OS X El Capitan and span Windows are now supported Please follow MarcomCentral on LinkedIn Facebook Error Specified Key Was Too Long Max Key Length Is Bytes Instagram and Twitter We

mysql error 1071 key too long

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mysql error 1071 specified key was too long

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Mysql Error p CI MySQL Sandbox MariaDB data chef Adtech Twitter GitHub RSS Using Innodb large prefix to Avoid ERROR If you've ever tried to add an index that includes a long varchar column to an InnoDB table in MySQL you may have seen this error Specified Key Was Too Long Max Key Length Is Bytes Mysql span class 'line' ERROR Specified key was too long max key length is specified key was too long max key length is bytes mysql bytes span The character limit depends on the character set you use For example if you use latin then

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