WebNov 24, 2011 · 11 Answers Sorted by: 62 You can disable and re-enable the foreign key constraints before and after deleting: alter table MyOtherTable nocheck constraint all delete from MyTable alter table MyOtherTable check constraint all Share Improve this answer Follow answered Nov 24, 2011 at 1:17 Chris Fulstow 40.8k 10 86 109 10 WebDec 23, 2024 · 1 Because the table level FK allows you build multiple column FK's e.g. foreign key (some_fld, another_fld) references team (team_fld_1, team_fld_2) – Adrian Klaver Dec 23, 2024 at 21:13 There is no technical difference, which one you prefer is a matter of taste – a_horse_with_no_name Dec 23, 2024 at 21:13 Add a comment 1 …
Create Foreign Key Relationships - SQL Server Microsoft …
WebNov 27, 2015 · Sorted by: 25. Yes, it's possible. You should make the FK in UserStaff table. In this way: User Table. CREATE TABLE `User` ( `Id` int (11) NOT NULL AUTO_INCREMENT, `Name` varchar (255) DEFAULT NULL, PRIMARY KEY (`Id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; UserStaff Table. CREATE TABLE … WebApr 3, 2024 · create table extra_m2m ( person_or_car_id uuid not null, extra_type_id int, extra_id uuid not null references extra(id) on delete cascade, primary key … redragon speakers laptop
Foreign key referring to primary keys across multiple tables?
WebOct 30, 2008 · Well, since I did not find examples of the very simple solution I used, which is:. Drop foreign key; Truncate table; Recreate foreign … WebApr 30, 2009 · MySQL 5.5 Reference Manual: "InnoDB and FOREIGN KEY Constraints" SELECT ke.REFERENCED_TABLE_SCHEMA parentSchema, ke.referenced_table_name parentTable, ke.REFERENCED_COLUMN_NAME parentColumnName, ke.TABLE_SCHEMA ChildSchema, ke.table_name childTable, ke.COLUMN_NAME … WebJun 1, 2024 · If a column is assigned a foreign key, each row of that column must contain a value that exists in the ‘foreign’ column it references. The referenced (i.e. “foreign”) … redragon storm pro