search
Search
Login
Math ML Join our weekly DS/ML newsletter
menu
menu search toc more_vert
Robocat
Guest 0reps
Thanks for the thanks!
close
Comments
Log in or sign up
Cancel
Post
account_circle
Profile
exit_to_app
Sign out
help Ask a question
Share on Twitter
search
keyboard_voice
close
Searching Tips
Search for a recipe:
"Creating a table in MySQL"
Search for an API documentation: "@append"
Search for code: "!dataframe"
Apply a tag filter: "#python"
Useful Shortcuts
/ to open search panel
Esc to close search panel
to navigate between search results
d to clear all current filters
Enter to expand content preview
icon_star
Doc Search
icon_star
Code Search Beta
SORRY NOTHING FOUND!
mic
Start speaking...
Voice search is only supported in Safari and Chrome.
Navigate to
A
A
brightness_medium
share
arrow_backShare
Twitter
Facebook

Searching all foreign keys to a table or column in MySQL

Database
chevron_right
MySQL
chevron_right
Cookbooks
chevron_right
Tables Cookbooks
chevron_right
Key Cookbooks
schedule Jul 1, 2022
Last updated
local_offer MySQL
Tags
tocTable of Contents
expand_more

We can search for all foreign key constraints pointing to a particular table or a particular column in MySQL. The syntax varies slightly between searching for tables and searching for columns.

TO a table

To check all foreign keys that are referencing a particular table:

SELECT
TABLE_NAME, COLUMN_NAME, CONSTRAINT_NAME, REFERENCED_TABLE_NAME, REFERENCED_COLUMN_NAME
FROM
INFORMATION_SCHEMA.KEY_COLUMN_USAGE
WHERE
REFERENCED_TABLE_SCHEMA = 'database_name'
AND REFERENCED_TABLE_NAME = 'table_name';

Where:

  • database_name is the database within which the table you are interested in resides

  • table_name is the table you are interested in

TO a column

To check all foreign keys that are linking to a particular column:

SELECT
TABLE_NAME,COLUMN_NAME,CONSTRAINT_NAME, REFERENCED_TABLE_NAME,REFERENCED_COLUMN_NAME
FROM
INFORMATION_SCHEMA.KEY_COLUMN_USAGE
WHERE
REFERENCED_TABLE_SCHEMA = 'database_name' AND
REFERENCED_TABLE_NAME = 'table_name' AND
REFERENCED_COLUMN_NAME = 'column_name';

Where:

  • database_name is the database within which the table you are interested in resides

  • table_name is the table within which the column you are interested in resides

  • column_name is the column you are interested in

mail
Join our newsletter for updates on new DS/ML comprehensive guides (spam-free)
robocat
Published by Arthur Yanagisawa
Edited by 0 others
Did you find this page useful?
thumb_up
thumb_down
Ask a question or leave a feedback...
thumb_up
0
thumb_down
0
chat_bubble_outline
0
settings
Enjoy our search
Hit / to insta-search docs and recipes!