logo
down
shadow

Update values with a foreign key contraint


Update values with a foreign key contraint

By : Marvin
Date : November 14 2020, 04:51 PM
Hope this helps First of all, editing the ID key of a row is generally a bad idea, but I will not question this.
You should use the CASCADE behaviour on your constraint, altering your current table.
code :
[...] CONSTRAINT `fk_id_A` FOREIGN KEY (`id_A`) REFERENCES `TableA` (`id_A`) ON UPDATE CASCADE


Share : facebook icon twitter icon
Not able to delete the foreign key contraint in Nhibernate Mappings

Not able to delete the foreign key contraint in Nhibernate Mappings


By : Ádrian Chaves Olivei
Date : March 29 2020, 07:55 AM
it helps some times You prevent deletions in the Objectives table with your custom sql-delete but also require that all Objectives have a reference to a Review row. How should this work? This would also require that Reviews are never deleted.
A way this can work would be if you remove the foreign key constraint on the Objectives.ReviewId column, but I wouldn't recommend that. Since the ID of a deleted Review row won't help you for history purposes, a better way would be to make the Objectives.ReviewId column nullable and also null it out in your custom sql-delete.
"Foreign key contraint" error message although there are no foreign keys

"Foreign key contraint" error message although there are no foreign keys


By : user3038860
Date : March 29 2020, 07:55 AM
Any of those help The problem is that there is at least another table with foreign key to your adverts table. You need to tackle with those foreign key constraints, possibly, by temporarily/permanently removing them.
Foreign key contraint is not getting set in SQLlite using flask alchemy

Foreign key contraint is not getting set in SQLlite using flask alchemy


By : Manolis Zaimakis
Date : March 29 2020, 07:55 AM
should help you out below code worked for me and found it from below link -
Sqlite / SQLAlchemy: how to enforce Foreign Keys?
code :
   def _fk_pragma_on_connect(dbapi_con, con_record):
    dbapi_con.execute('pragma foreign_keys=ON')

from sqlalchemy import event
event.listen(engine, 'connect', _fk_pragma_on_connect)
mySQL, Error 1215 - foreign key contraint

mySQL, Error 1215 - foreign key contraint


By : Janko Timmermann
Date : March 29 2020, 07:55 AM
will be helpful for those in need Foreign key references must be the exact same type. In this case, you are using mediumint and int, which are not the same size.
You'd actually need to change your create statement
code :
create table utleie.utleie_oversikt (
    utleie_id int not null auto_increment,
    film_id int not null,
    kunde_id mediumint not null,
    primary key (utleie_id) );
MYSQL error code 1451: cannot delete or update parent row: a foreign key contraint fails

MYSQL error code 1451: cannot delete or update parent row: a foreign key contraint fails


By : user2514355
Date : March 29 2020, 07:55 AM
Any of those help From the error, there is a foreign key constraint issue, that means that there is one or more rows in table golfbag that contains the primary key of the row to be deleted from table caddy as its foreign key.
Although there is a way to force delete but this is not advised as this will cause orphan records in table golfbag.
code :
SET FOREIGN_KEY_CHECKS = 0;
SET FOREIGN_KEY_CHECKS = 1;
Related Posts Related Posts :
  • MAMP Pro 5.1.1-terminates MySQL when quitting
  • SQL - Get date of most votes cast
  • "Fuzzier" search in mysql
  • Tracing mysqld Using SystemTap
  • SELECT + INSERT + Query Cache = MySQL lock up
  • SQL vs. NoSQL for medium complexity search systems
  • SQL Error when creating table
  • Is it possible to write a query to compare rows to other rows in same table?
  • Display all duplicate records based multiple columns
  • summing time column in mysql
  • InnoDB: Cannot open table
  • Why is IN() considered O(logN) operation?
  • Can a deadlock occur on commit?
  • Is there a fast way to do a '%phrase%' search in any DB?
  • Is using an IN over a huge data set a good idea?
  • How can I know if a table is already arranged in ascending order in MySQL?
  • MySQL - Designing database for a simple game
  • Why am I getting "Host '192.168.1.220' is not allowed to connect to this MySQL server"?
  • what type of password hash? possible mysql hash?
  • MySQL - Using a date range vs functions
  • Using IS NULL and COALESCE in OrderBy Doctrine Querybuilder
  • How to merge MySQL columns into one column if there are empty values in the table?
  • Cardinality Confusion
  • Renaming column multiple ids in SELECT
  • Group all from and to messages per user
  • How to handled the null values in WHERE IN condition in mysql
  • Is it okay to update primary key field to shift a record to the top?
  • Stop query through pdo
  • How to check whether particular value in field in MySQL exists
  • Execute a statement for every table in a database
  • insertion 74G data into mysql table cost more then 2 days, how to improve insert performance
  • Where can I see the differents "Hibernate Console Configurations" in Eclipse
  • MySql | relational database vs non relational database in terms of Performance
  • Exporting mysql database using mysqldump including procedures
  • Trigger MySQL not working
  • How do I update values for individual rows quickly?
  • MySQL join query with multiple where condition
  • MySQL stored procedure is not working
  • MySQL - Order By exact match at the end
  • Select max date or null date from same table MySQL
  • Best solution workaround for needing a mysql event on insert?
  • MySQL select several columns of several tables at the same time without using JOIN
  • Is it more efficient to have a table with one of its columns mostly empty or make a new table and refer to it?
  • mysql data truncated with ñ character
  • MySQL Distinct Active Users for the last month query
  • Get all rows that match another attribute in the same table
  • MySQL statement to get min value with max ID
  • DATEDIFF Current/Date for Last Record
  • What is the logic or procedure for combining multiple DB query's results into one elegant table?
  • Modify TIMESTAMP MySQL for use as Primary Key
  • Django - Efficiently bulk create inherited models
  • MySQL Dual table Join Dual table
  • Ruby on Rails - database where sorted by id
  • MySQL 5.6 : Access denied for user 'root' @ 'localhost' when password contains backslash
  • sql query case dateadd
  • Click on one button multiple times and mySql
  • Select daily amount of specific values from same column
  • How to send e-mail to users within a database?
  • Updating self joined table
  • Convert query to a Left-Join (?) to include userid's without a match
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org