what is foreign key?

(73)
1

PG::ForeignKeyViolation: ERROR: update or delete on table violates foreign key constraint

sql

By Stone Hammer Gertrude Buckridge at Feb 03 2021

-1

error code 1215 cannot add foreign key constraint

sql

By Double Wooden Hammer Deborah Schumm at Jan 28 2021

1

foreign key in sql

sql

By Wooden Hammer Emily Farrell at Jan 26 2021

0

how to create table in oracle sql syntax example and foreign key

sql
oracle
syntax
source

By Beginner Charming Cassowary at Jan 17 2021

0

what is foreign key

sql

By Beginner Camille O'Hara at Jan 06 2021

2

sql foreign key

sql

By Wooden Hammer Lonnie Price at Jan 06 2021

0

add column mysql with foreign key

sql
mysql

By Wooden Hammer Maxine Jenkins at Dec 23 2020

0

azure sql server check foreign key

sql
sql-server
azure
source

By Beginner Terrance Adams at Dec 20 2020

7

difference primary key and foreign key

sql

By Wooden Hammer Theresa Hintz at Dec 04 2020

0

foreign key set 0

sql
set
source

By Beginner Krystal Kling at Dec 03 2020

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Cannot truncate a table referenced in a foreign key constraint (`video_clips`.`channel_clips`, CONSTRAINT `clips_fk` FOREIGN KEY (`clip_id`) REFERENCES `video_clips`.`clips` (`id`)) in sql]
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SQLSTATE[HY000]: General error: 3780 Referencing column 'role_id' and referenced column 'id' in foreign key constraint 'user_role_id foreign' are incompatible.
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