Mysql Error Code 1089
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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 #1089 error in phpmyadmin Learn more about Stack Overflow the company Business Learn more about hiring developers #1089 phpmyadmin or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack #1063 mysql Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up What is wrong with my SQL here? #1089
1063 Incorrect Column Specifier
- Incorrect prefix key up vote 24 down vote favorite 7 CREATE TABLE `table`.`users` ( `id` INT(11) NOT NULL AUTO_INCREMENT, `username` VARCHAR(50) NOT NULL, `password` VARCHAR(50) NOT NULL, `dir` VARCHAR(100) NOT NULL, PRIMARY KEY (`id`(11)) ) ENGINE = MyISAM; I'm getting the #1089 - Incorrect prefix key error and can't figure out what I'm doing wrong. Help, please! mysql sql share|improve this question edited Aug 19 '15 #1075 incorrect table definition at 15:18 Erbureth 2,297722 asked Mar 8 '15 at 21:47 sandorfalot 3631213 1 Remove (11) from your primary key declaration -- you should just use the column, in this case, id... sqlfiddle.com/#!9/30aa3/1 –sgeddes Mar 8 '15 at 21:50 What is id(11)? –Gordon Linoff Mar 8 '15 at 21:50 thank you, that worked! –sandorfalot Mar 8 '15 at 21:51 2 if you're using PHPMyAdmin, leave the size value empty on the pop-up window. –dangel Jan 25 at 0:17 add a comment| 7 Answers 7 active oldest votes up vote 39 down vote In your PRIMARY KEY definition you've used (id(11)), which defines a prefix key - i.e. the first 11 characters only should be used to create an index. Prefix keys are only valid for CHAR, VARCHAR, BINARY and VARBINARY types and your id field is an int, hence the error. Use PRIMARY KEY (id) instead and you should be fine. MySQL reference here and read from paragraph 4. share|improve this answer answered Mar 8 '15 at 21:58 user1864610 add a comment| up vote 7 down vote If you are using a GUI and you are still getting the same problem. Just leave
than the key part, or the ... Discussion This error message (shown in full below) arises from an ALTER TABLE operation where you try to define a key or index with a prefix improperly or #1075 error in mysql it is not allowed by the storage engine. Error: 1089 - Incorrect sub part
Foreign Key Phpmyadmin
key; the used key part isn't a string, the used length is longer than the key part, or the storage
Mysql Collation
engine doesn't support unique sub keys SQLSTATE: HY000 (ER_WRONG_SUB_KEY) The first part of the error message (Incorrect sub part key) is the general message. It's followed by three other reasons why the error might http://stackoverflow.com/questions/28932281/what-is-wrong-with-my-sql-here-1089-incorrect-prefix-key be caused: The used key part isn’t a string The used length is longer than the key part The storage engine doesn’t support unique sub keys For the first reason above (the used key part isn’t a string), this is suggesting that may have tried to create an index prefix on a column that is not a string. For example, if the column on which an index http://www.mysqlab.net/knowledge/kb/detail/topic/error%20messages/id/6576 prefix is based is a non-string (i.e., INT, TIMESTAMP, etc.), you will receive this error: CREATE TABLE table (a INT); ALTER TABLE table1 ADD INDEX (col1(5)); ERROR 1089 (HY000): Incorrect sub part key; the used key part isn't a string, the used length is longer than the key part, or the storage engine doesn't support unique sub keys The second SQL statement is altering the table created in the first statement and is attempting to create an index prefix based on the first 5 bytes of column col1, but column col1 is an INT. This is not possible. CREATE TABLE table1 (col1 TIMESTAMP); ALTER TABLE table1 ADD UNIQUE (col1(1)); ERROR HY000: Incorrect sub part key; the used key part isn't a string, the used length is longer than the key part, or the storage engine doesn't support unique sub keys Similarly in this example, the second SQL statement is attempting to create an index prefix on the first byte of column col1, but column col1 is a TIMESTAMP in this example. This is not possible either. As for the second component of the error message for error 1089, the used length is longer than the key part, this arises when you
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`id` INT(10) NOT NULL AUTO_INCREMENT ,
`student_name` INT(255) NOT NULL ,
`student_roll` INT(255) NOT NULL ,
`student_batch_id` INT(255) NOT NULL ,
`student_course_name` INT(255) NOT NULL ,
`student_paid_ammount` INT(255) NOT NULL ,
`student_paid_date` DATETIME(6) NOT NULL ,
`student_payment_recivedby` INT(255) NULL ,
PRIMARY KEY (`id`(10))) ENGINE = MyISAM COMMENT = 'Students Billing DB';
matinict Answer Email {} Share /DDL Information/ CREATE TABLE `payment` ( `id` INT(10) NOT NULL AUTO_INCREMENT, `student_name` INT(255) NOT NULL, `student_roll` INT(255) NOT NULL, `student_batch_id` INT(255) NOT NULL, `student_course_name` INT(255) NOT NULL, `student_paid_ammount` INT(255) NOT NULL, `student_paid_date` DATETIME NOT NULL, `student_payment_recivedby` INT(255) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=MYISAM DEFAULT CHARSET=latin1 COMMENT='Students Billing DB' Source (Stackoverflow) http://stackoverflow.com/questions/35391407/mysql-table-creating-error-1089 Comments Please enable JavaScript to view the comments powe