I have the following table in MySQL version 5.5.24
CREATE TABLE IF NOT EXISTS `bookings` (
`booking_id` int(11) NOT NULL ,
`class_id` int(11) NOT NULL,
`user_id` int(11) NOT NULL
) ENGINE=InnoDB AUTO_INCREMENT=22 DEFAULT CHARSET=latin1;
INSERT INTO `bookings` (`booking_id`, `class_id`, `user_id`) VALUES
(19, 3, 5),
(21, 6, 5);
CREATE TABLE IF NOT EXISTS `users` (
`user_id` int(11) NOT NULL,
`username` varchar(20) NOT NULL,
`firstname` varchar(20) NOT NULL,
`lastname` varchar(20) NOT NULL,
`email` varchar(30) NOT NULL,
`password` varchar(255) NOT NULL
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=latin1;
INSERT INTO `users` (`user_id`, `username`, `firstname`, `lastname`, `email`, `password`) VALUES
(4, 'another', 'Anne', 'Other', 'another#gmail.com', '1234'),
(5, 'rbirney', 'Rosanne', 'Birney', 'rosanne.birney#gmail.com', '1111');
ALTER TABLE `bookings`
ADD PRIMARY KEY (`booking_id`), ADD KEY `class_id` (`class_id`,`user_id`), ADD KEY `user_id` (`user_id`);
ALTER TABLE `classes`
ADD PRIMARY KEY (`class_id`);
ALTER TABLE `users`
ADD PRIMARY KEY (`user_id`);
ALTER TABLE `bookings`
MODIFY `booking_id` int(11) NOT NULL AUTO_INCREMENT,AUTO_INCREMENT=22;
ALTER TABLE `classes`
MODIFY `class_id` int(11) NOT NULL AUTO_INCREMENT,AUTO_INCREMENT=11;
ALTER TABLE `users`
MODIFY `user_id` int(11) NOT NULL AUTO_INCREMENT,AUTO_INCREMENT=6;
ALTER TABLE `bookings`
ADD CONSTRAINT `fkBookingClass` FOREIGN KEY (`class_id`) REFERENCES `classes` (`class_id`),
ADD CONSTRAINT `fkBookingUser` FOREIGN KEY (`user_id`) REFERENCES `users` (`user_id`);
I am getting the following message
#1062 - Duplicate entry '19' for key 'PRIMARY'
anyone have any ideas?
In SQL it is not allowed to use the same value for a primary key twice. (value = 19)
Primary keys are always unique.
Related
This is my sql file:
DROP DATABASE IF EXISTS `dbstudents`;
CREATE DATABASE IF NOT EXISTS `dbstudents`;
USE `dbstudents`;
DROP TABLE IF EXISTS `student_detail`;
CREATE TABLE `student_detail` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`fav_programming_language` varchar(128) DEFAULT NULL,
`city` varchar(45) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=latin1;
DROP TABLE IF EXISTS `student`;
CREATE TABLE `student` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`first_name` varchar(45) DEFAULT NULL,
`last_name` varchar(45) DEFAULT NULL,
`email` varchar(45) DEFAULT NULL,
`student_detail_id` int(11) DEFAULT NULL,
`password` varchar(50) NOT NULL,
`enabled` tinyint(1) NOT NULL,
PRIMARY KEY (`id`),
KEY `FK_DETAIL_idx` (`student_detail_id`),
CONSTRAINT `FK_DETAIL` FOREIGN KEY (`student_detail_id`) REFERENCES `student_detail` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
DROP TABLE IF EXISTS `authorities`;
CREATE TABLE `authorities` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`authority` varchar(50) NOT NULL,
UNIQUE KEY `authorities_idx_1` (`id`,`authority`),
CONSTRAINT `authorities_ibfk_1` FOREIGN KEY (`id`) REFERENCES `student` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
This is insert statement:
INSERT INTO `student`
VALUES
(1, 'Stefan', 'Stefanovic', 'stefan#gmail.com', 1, 'stefan123', 1),
(2, 'Marko', 'Markovic', 'marko#gmail.com', 1, 'marko123', 1),
(3, 'Jovan', 'Jovanovic', 'jovan#gmail.com', 1, 'jovan123', 1);
This is error:
Error Code: 1452. Cannot add or update a child row: a foreign key constraint fails (`dbstudents`.`student`, CONSTRAINT `FK_DETAIL` FOREIGN KEY (`student_detail_id`) REFERENCES `student_detail` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION)
I found some solutions but all of them are on some way different then mine. How to solve this? An error occurs when I try to fill in every table except the autorities
As you haven't any student_details already in the system use NULL instead a number and add the number later
INSERT INTO `student`
VALUES
(1, 'Stefan', 'Stefanovic', 'stefan#gmail.com', NULL, 'stefan123', 1),
(2, 'Marko', 'Markovic', 'marko#gmail.com', NULL, 'marko123', 1),
(3, 'Jovan', 'Jovanovic', 'jovan#gmail.com', NULL, 'jovan123', 1);
see example https://dbfiddle.uk/?rdbms=mysql_8.0&fiddle=c1bbdd8ee9b9a9af244da774cdb41175
i keep struggling to figure out why i cant seem to add users. Is it a database setup issue? or just a syntax issue? Need some guidance.
When trying to simply insert in an existing user_id to and existing room_id i keep getting
Query:
INSERT INTO group_users (room_id, user_id) VALUES(1, 3);
ERROR: Cannot add or update a child row: a foreign key constraint fails
both the user id and the room id exist in the database already. Wondering what i need to do.
for reference here is the database schema:
CREATE TABLE `groups` (
`room_id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
`room_name` varchar(60) NOT NULL,
PRIMARY KEY (`room_id`),
UNIQUE KEY `room_name` (`room_name`)
)ENGINE=InnoDB;
-- Chatapp.users definition
CREATE TABLE `users` (
`user_id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
`username` varchar(60) NOT NULL,
`language` varchar(32) DEFAULT 'english',
`SocketID` varchar(42) DEFAULT NULL,
`email` varchar(60) DEFAULT NULL,
`password` varchar(255) DEFAULT NULL,
`registered_on` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
`confirmed_email` tinyint(1) NOT NULL DEFAULT '0',
`confirmed_on` datetime DEFAULT NULL,
PRIMARY KEY (`user_id`),
UNIQUE KEY `username` (`username`)
)ENGINE=InnoDB;
-- Chatapp.group_users definition
CREATE TABLE `group_users` (
`room_id` bigint(20) unsigned NOT NULL,
`user_id` bigint(20) unsigned NOT NULL,
PRIMARY KEY (`room_id`,`user_id`),
KEY `group_users_fk2` (`user_id`),
CONSTRAINT `group_users_fk1` FOREIGN KEY (`room_id`) REFERENCES `groups` (`room_id`),
CONSTRAINT `group_users_fk2` FOREIGN KEY (`user_id`) REFERENCES `users` (`user_id`)
) ENGINE=InnoDB;
-- Chatapp.messages definition
CREATE TABLE `messages` (
`message_id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
`user_id` bigint(20) unsigned DEFAULT NULL,
`message` mediumtext COLLATE utf8mb4_bin,
`timestamp` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`message_id`),
KEY `messages_fk1` (`user_id`),
CONSTRAINT `messages_fk1` FOREIGN KEY (`user_id`) REFERENCES `users` (`user_id`)
) ENGINE=InnoDB CHARSET=utf8mb4 COLLATE=utf8mb4_bin;
If I changed group_id to room_id it's work normally now:
CREATE TABLE `group_users` (
`room_id` bigint(20) unsigned NOT NULL,
`user_id` bigint(20) unsigned NOT NULL,
PRIMARY KEY (`room_id`,`user_id`),
KEY `group_users_fk2` (`user_id`),
CONSTRAINT `group_users_fk1` FOREIGN KEY (`room_id`) REFERENCES `groups` (`room_id`),
CONSTRAINT `group_users_fk2` FOREIGN KEY (`user_id`) REFERENCES `users` (`user_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `users` (`user_id`, `username`, `language`, `SocketID`, `email`, `password`, `registered_on`, `confirmed_email`, `confirmed_on`) VALUES (NULL, 'pavel', 'english', NULL, NULL, NULL, CURRENT_TIMESTAMP, '0', NULL);
INSERT INTO `users` (`user_id`, `username`, `language`, `SocketID`, `email`, `password`, `registered_on`, `confirmed_email`, `confirmed_on`) VALUES (NULL, 'bob', 'english', NULL, NULL, NULL, CURRENT_TIMESTAMP, '0', NULL);
INSERT INTO `groups` (`room_id`, `room_name`) VALUES (NULL, 'room1');
INSERT INTO `groups` (`room_id`, `room_name`) VALUES (NULL, 'room2');
INSERT INTO `group_users` (`room_id`, `user_id`) VALUES ('1', '2');
INSERT INTO `group_users` (`room_id`, `user_id`) VALUES ('1', '1');
result:
+---------+---------+
| room_id | user_id |
+---------+---------+
| 1 | 1 |
| 1 | 2 |
+---------+---------+
Is rooms the same as groups? Note that there is no room_id in groups-table as your constraint suggest.
My code SQL is :
enter code here
CREATE TABLE IF NOT EXISTS `participer` (
`statut_Invitation` tinyint(1) NOT NULL,
`NumVersion` int(11) NOT NULL,
`InviteCode` varchar(255) NOT NULL,
`IdQuest` int(11) NOT NULL,
PRIMARY KEY (`NumVersion`,`InviteCode`,`IdQuest`),
KEY `FK_Participer_NumVersion` (`NumVersion`),
KEY `FK_Participer_IdQuest` (`IdQuest`),
KEY `FK_Participer_InviteCode` (`InviteCode`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `participer` (`statut_Invitation`, `NumVersion`, `InviteCode`, `IdQuest`) VALUES
(0, 2, '2548', 1),
(0, 2, '8742', 1);
CREATE TABLE IF NOT EXISTS `questionnaire` (
`IdQuest` int(11) NOT NULL AUTO_INCREMENT,
`Nom` varchar(256) DEFAULT NULL,
`DateCreation` date DEFAULT NULL
PRIMARY KEY (`IdQuest`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=3 ;
INSERT INTO `questionnaire` (`IdQuest`, `Nom`, `DateCreation`, `ID`) VALUES
(1, 'Parions Sport', '2015-03-23'),
(2, 'GPS', '2015-03-23');
CREATE TABLE IF NOT EXISTS `utilisateurs` (
`InviteCode` varchar(255) NOT NULL,
`Email` varchar(25) NOT NULL,
`DateNaissance` date DEFAULT NULL,
`Ville` varchar(25) DEFAULT NULL,
PRIMARY KEY (`InviteCode`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `utilisateurs` (`InviteCode`, `Email`, `DateNaissance`, `Ville`) VALUES
('1235314', 'bocchi#gmail.com', NULL, NULL),
('2548', 'bocchiTEST#gmail.com', NULL, NULL),
('337752493652424404824466004444846460026', 'dylan#gmail.com', NULL, NULL),
('53131172170670664482420846024208824402', 'dylan2#gmail.com', NULL, NULL),
('5446544', 'lool', NULL, NULL),
('8742', 'max#gmail.com', NULL, NULL);
-- --------------------------------------------------------
CREATE TABLE IF NOT EXISTS `versionquestionnaire` (
`NumVersion` int(11) NOT NULL,
`DateExpiration` date DEFAULT NULL,
`SommeNote` float DEFAULT NULL,
`NbReponses` int(11) DEFAULT NULL,
`IdQuest` int(11) NOT NULL,
PRIMARY KEY (`NumVersion`,`IdQuest`),
KEY `FK_VersionQuestionnaire_IdQuest` (`IdQuest`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `versionquestionnaire` (`NumVersion`, `DateExpiration`, `SommeNote`, `NbReponses`, `IdQuest`) VALUES
(1, '2015-03-26', 120, 2, 1),
(1, '2015-03-30', 100, 1, 2),
(2, '2015-03-26', 210, 3, 1),
(2, '2015-03-30', 300, 4, 2);
ALTER TABLE `participer`
ADD CONSTRAINT `FK_Participer_IdQuest` FOREIGN KEY (`IdQuest`) REFERENCES `versionquestionnaire` (`IdQuest`),
ADD CONSTRAINT `FK_Participer_InviteCode` FOREIGN KEY (`InviteCode`) REFERENCES `utilisateurs` (`InviteCode`),
ADD CONSTRAINT `FK_Participer_NumVersion` FOREIGN KEY (`NumVersion`) REFERENCES `versionquestionnaire` (`NumVersion`);
ALTER TABLE `versionquestionnaire`
ADD CONSTRAINT `FK_VersionQuestionnaire_IdQuest` FOREIGN KEY (`IdQuest`) REFERENCES `questionnaire` (`IdQuest`);
When i want to delete the version 1 of the questionnaire 1 :
DELETE FROM `versionquestionnaire` WHERE `versionquestionnaire`.`NumVersion` = 1 AND `versionquestionnaire`.`IdQuest` = 1;
I have a error :
1451 - Cannot delete or update a parent row: a foreign key constraint fails (`testbug`.`participer`, CONSTRAINT `FK_Participer_IdQuest` FOREIGN KEY (`IdQuest`) REFERENCES `versionquestionnaire` (`IdQuest`)) ;
I don't understand because in the table participer, there isn't the couple with NumVersion = 1 and IdQuest = 1, there are 2 couples with NumVersion = 1 and IdQuest = 1. So my request may be run.
In short, you can't delete records from versionquestionnaire because some records in participer table reference records in participer.
Your request clearly violates IdQuest constraint: you're trying to delete a record with IdQuest = 1, while BOTH participants that still reference that ID.
i have the following database relations:
user 1:n survey 1:n statement 1:n user_response n:1 user
i need to query all statements which don't have a relation to a user_response or where the field user_response.closed = 1 of a given user-, and a given statement-id.
I don't really get it...
EDIT
Here's an export of my database. For example i have the survey-id 1 and user-id 1. I need all statements of the survey with the id 1, which don't have a response of the user with the id 1, or where the response of the user is not closed.
So my result should be 'Statement 1' (because user_response.closed = 0) and 'Statement 2' (because the user with id 1 didn't give a response).
CREATE TABLE IF NOT EXISTS `statement` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`title` varchar(64) NOT NULL,
`survey_id` int(11) NOT NULL,
PRIMARY KEY (`id`),
KEY `2` (`survey_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=5 ;
INSERT INTO `statement` (`id`, `title`, `survey_id`) VALUES
(1, 'Statement 1', 1),
(2, 'Statement 2', 1),
(3, 'Statement 1', 2),
(4, 'Statement 1', 3);
CREATE TABLE IF NOT EXISTS `survey` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`title` varchar(64) NOT NULL,
`user_id` int(11) NOT NULL,
PRIMARY KEY (`id`),
KEY `1` (`user_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=4 ;
INSERT INTO `survey` (`id`, `title`, `user_id`) VALUES
(1, 'Survey 1', 1),
(2, 'Survey 2', 1),
(3, 'Survey 3', 2);
CREATE TABLE IF NOT EXISTS `user` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(64) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=3 ;
INSERT INTO `user` (`id`, `name`) VALUES
(1, 'Max'),
(2, 'Peter');
CREATE TABLE IF NOT EXISTS `user_response` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`value` int(3) NOT NULL,
`closed` tinyint(1) NOT NULL,
`statement_id` int(11) NOT NULL,
`user_id` int(11) NOT NULL,
PRIMARY KEY (`id`),
KEY `3` (`statement_id`),
KEY `4` (`user_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=4 ;
INSERT INTO `user_response` (`id`, `value`, `closed`, `statement_id`, `user_id`) VALUES
(1, 50, 0, 1, 1),
(2, 20, 0, 4, 2);
ALTER TABLE `statement`
ADD CONSTRAINT `2` FOREIGN KEY (`survey_id`) REFERENCES `survey` (`id`),
ADD CONSTRAINT `FK_BBA66ED9A94F7BC` FOREIGN KEY (`survey_id`) REFERENCES `survey` (`id`);
ALTER TABLE `survey`
ADD CONSTRAINT `1` FOREIGN KEY (`user_id`) REFERENCES `user` (`id`),
ADD CONSTRAINT `FK_AD5F9BFC9395C3F3` FOREIGN KEY (`user_id`) REFERENCES `user` (`id`);
ALTER TABLE `user_response`
ADD CONSTRAINT `3` FOREIGN KEY (`statement_id`) REFERENCES `statement` (`id`),
ADD CONSTRAINT `4` FOREIGN KEY (`user_id`) REFERENCES `user` (`id`);
I have a table like this:
CREATE TABLE IF NOT EXISTS `activity` (
`ID` int(8) NOT NULL AUTO_INCREMENT,
`action` tinyint(1) NOT NULL,
`userID` int(8) NOT NULL,
`categoryID` int(8) NOT NULL,
PRIMARY KEY (`ID`),
UNIQUE KEY `UNIQUE` (`userID`,`categoryID`),
KEY `categoryID` (`categoryID`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=2 ;
With the next information:
INSERT INTO `activity` (`ID`, `action`, `userID`, `categoryID`) VALUES
(1, 2, 11, 312);
I'm trying to execute this query:
UPDATE `activity` SET `action` = '3' WHERE `userID` = '11' AND `categoryID` = '312' ;
And response me with that:
Duplicate entry '11-312' for key 'UNIQUE'
I don't know why. I ain't changing unique keys or inserting another new record. What is the problem?
Thanks.
I don't know why, when I export whole database, instead of show before SQL, show this:
CREATE TABLE IF NOT EXISTS `activity` (
`ID` int(8) NOT NULL AUTO_INCREMENT,
`action` tinyint(1) NOT NULL,
`userID` int(8) NOT NULL,
`categoryID` int(8) NOT NULL,
PRIMARY KEY (`ID`),
UNIQUE KEY `UNIQUE` (`action`,`userID`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=2 ;
Now I rewrite setup table sql and it works.