ALTER TABLE "sirius"."TestTable" DROP FOREIGN KEY "FKTestTable"; ALTER TABLE "sirius"."TestTable" ADD CONSTRAINT "FKTestTable" NOT NULL FOREIGN KEY ( "RT_ID" ASC ) REFERENCES "dba"."RefTable ( "RT_ID" ) ON UPDATE CASCADE ON DELETE CASCADE; You might be able to write a generic...
I'm confused about the change method used to modify a database column. I'm trying to use it to add "onDelete('cascade') to a foreignId column. But I get an error, "SQLSTATE[42S21]: Column already exists: 1060 Duplicate column name 'user_id'
CONSTRAINT fd_b_id FOREIGN KEY (id) REFERENCES a(id) ON DELETE CASCADE); GRANT ALL ON a TO PUBLIC; GRANT ALL ON b TO PUBLIC; INSERT INTO a(id) VALUES (1); INSERT INTO b(id) VALUES (1); CREATE FUNCTION show_current_us er() RETURNS OPAQUE AS ' ...
`to_date`dateNOTNULL,PRIMARYKEY (`emp_no`,`dept_no`), KEY `dept_no` (`dept_no`),CONSTRAINT`dept_emp_ibfk_1`FOREIGNKEY (`emp_no`)REFERENCES`employees` (`emp_no`)ONDELETECASCADE,CONSTRAINT`dept_emp_ibfk_2`FOREIGNKEY (`dept_no`)REFERENCES`departments` (`dept_no`)ONDELETECASCADE ) EN...
"ALTER TABLE public.table_w1_2 ADD CONSTRAINT table_w1_2_c😳olͪ2_w1_4_table_w1_2_c😳olͪ2_w1_4_fk FOREIGN KEY (c😳olͪ2_w1_4) REFERENCES public.table_w1_2 (c😳olͪ2_w1_4) ON DELETE CASCADE ON UPDATE CASCADE" ...
key of foo that is 'Not Null' and has both 'Restrict' for 'On Delete' and 'On Cascade' (and then apply changes and close the create table dialog) 3. Reopen the Edit Table window for the table 'bar' 4. Change 'On Delete' to 'Set Null' 5. Click 'Apply Changes' 6. Click '...
CONSTRAINT majorid_to_major FOREIGN KEY (majorid) REFERENCES major(id) ON DELETE CASCADE ); 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 如果运行案例,建议按照“增-查-改-删”的顺序进行。
//dba.stackexchange.com/questions/31720/find-the-foreign-keys-associated-with-a-given-primary-key ...
id int primary key, name varchar(100) ); CREATE TABLE idcard( id int primary key, num varchar(18), CONSTRAINT p_id_fk FOREIGN KEY(id) REFERENCES person(id) ); 2.7 级联操作 级联修改: ON UPDATE CASCADE 级联删除: ON DELETE CASCADE ...
DeleteOrphansTiming Gets or sets a value indicating when a dependent/child entity will have its state set toDeletedonce severed from a parent/principal entity through either a navigation or foreign key property being set to null. The default value isImmediate. ...