473,394 Members | 1,739 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,394 software developers and data experts.

cannot add or update a child row

Please help,I'm very frustated.

when I ADD
the data in kn_history_question table of htbase_tst database....it giving the error "Cannot add or update a child row:a foreign key constraint fails,<'htbase_tst/kn_history_question', CONSTRAINT 'FK_kn_history_question_complaint' FOREIGN KEY ('complaint_id' ) REFERENCES 'complaint'('id')).

This is my table script.....

CREATE TABLE `city` (
`id` int(11) NOT NULL auto_increment,
`city_name` varchar(255) default NULL,
`city_code` varchar(80) default NULL,
`state_id` int(11) default NULL,
`Nearest_airport_code` varchar(80) default NULL,
`date_updated` timestamp NULL default NULL,
`date_created` timestamp NULL default NULL,
PRIMARY KEY (`id`),
KEY `FK_cities_states` (`state_id`)
) ENGINE=MyISAM AUTO_INCREMENT=11 DEFAULT CHARSET=utf8;


CREATE TABLE `kn_history_question` (
`id` int(11) NOT NULL auto_increment,
`complaint_id` int(11) default NULL,
`question_text` varchar(255) default NULL,
`sex_relevance` varchar(20) default NULL,
`age_group_relevance` varchar(255) default NULL,
`date_created` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
`date_updated` timestamp NOT NULL default '0000-00-00 00:00:00',
`count_of_responses` int(5) default NULL COMMENT ', paint radio buttons if value is one else check boxes',
`doctor_id` int(11) default NULL,
PRIMARY KEY (`id`),
KEY `FK_kn_history_question_complaint` (`complaint_id`),
CONSTRAINT `FK_kn_history_question_complaint` FOREIGN KEY (`complaint_id`) REFERENCES `complaint` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;


ERROR:"Cannot add or update a child row:a foreign key constraint fails,<'htbase_tst/kn_history_question', CONSTRAINT 'FK_kn_history_question_complaint' FOREIGN KEY ('complaint_id' ) REFERENCES 'complaint'('id')).

Please give the solution of this ERROR.
Jul 8 '07 #1
1 5945
dafodil
392 256MB
Some row in the child does not comply with the constraint, correct the problem.
You find the rows like this:
select child.id from child left join parent on (child.parent_id=parent.id) where child.id is not null and parent.id is null;
Jul 9 '07 #2

Sign in to post your reply or Sign up for a free account.

Similar topics

2
by: Ralph Smith | last post by:
I'm having trouble copying a database to another machine. Here are the two table's in ths database and the sql commands: DROP TABLE IF EXISTS `clients`; CREATE TABLE `clients` ( `client_id`...
3
by: Fabio Negri Cicotti [MCP] | last post by:
Hi All. I'm trying to insert data into 2 tables (parent-child) using the ADO.NET's SetParentRow method. The parent table has an identity column as primary key. When I execute the code below I...
6
by: Aaron Smith | last post by:
Ok. I have a dataset that has multiple tables in it. In one of the child tables, I have a column that I added to the DataSet (Not in the DataSource). This column does not need to be stored in the...
5
by: PAUL | last post by:
Hello, I have 2 tables with a relationship set up in the dataset with vb ..net. I add a new record to the parent table then edit an existing child record to have the new parent ID. However when I...
3
by: fuimens | last post by:
Hi, With mysql-4.0.20, I have a problem inserting data with foreign key references, MySQL saying ERROR 1216: Cannot add or update a child row: a foreign key constraint fails The message is...
1
by: Hexman | last post by:
Hello All, What I'm trying to do is update a child record using a parent-child relation. I want to find out if it is faster than than doing multiple selects. Anyways, I've created a dataset...
13
by: dennis | last post by:
Hello, I'm having trouble solving the following problem with DB2 UDB 8.2. I need to create a trigger that performs certain extra constraint validations (temporal uniqueness). One of the tables...
4
by: Ryan | last post by:
I've got a little bit of code that runs when you enter data in a datasheet view (which is a subform of the form you are in) if rst!DateReceived >= 30 Then Forms!DisposalRecords.Label90.Caption =...
0
by: Pete Newman | last post by:
In running vs (vb ) .net 2005 and Sql 2005 On my form i have an oledbconnection, an oledbdataadapter and a dataset. when i try and do an update i get an error; 'Child list for field...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
by: ryjfgjl | last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
0
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.