Created
June 29, 2022 11:18
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List MySQL foreign keys including delete / update rules (RESTRICT, CASCADE, SET NULL, NO ACTION or SET DEFAULT)
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SELECT `r`.`table_name`, `r`.`referenced_table_name`, `r`.`constraint_name`, GROUP_CONCAT(`k`.`column_name` SEPARATOR ', ') AS `key_columns`, `r`.`delete_rule`, `r`.`update_rule` | |
FROM `information_schema`.`referential_constraints` `r` | |
INNER JOIN `information_schema`.`key_column_usage` `k` on `r`.`constraint_catalog` = `k`.`constraint_catalog` and `r`.`constraint_schema` = `k`.`constraint_schema` and `r`.`constraint_name` = `k`.`constraint_name` | |
WHERE `r`.`constraint_schema` = '<database_name>' | |
GROUP BY `r`.`constraint_catalog`, `r`.`constraint_schema`, `r`.`constraint_name` | |
ORDER BY `r`.`table_name`, `r`.`constraint_name` |
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