commit 3e4ef0f93914c92f6e4dd499eb9106066247b406
Author: p.belezov <p.belezov@mfc38.ru>
Date:   Thu Jan 16 12:35:38 2025 +0800

    'initial-commit'

diff --git a/MySQL/all_foreign_keys_to_table_or_column.md b/MySQL/all_foreign_keys_to_table_or_column.md
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+# Find all tables whose foreign key refers to the table/column
+[SQL File](/sql/all_foreign_keys_to_table_or_column.sql)
+
+## By table
+
+```
+SELECT 
+  TABLE_NAME,COLUMN_NAME,CONSTRAINT_NAME, REFERENCED_TABLE_NAME,REFERENCED_COLUMN_NAME
+FROM
+  INFORMATION_SCHEMA.KEY_COLUMN_USAGE
+WHERE
+  REFERENCED_TABLE_SCHEMA = (SELECT DATABASE()) AND
+  REFERENCED_TABLE_NAME = '<insert_table_name>';
+```
+
+## By table column
+
+```
+SELECT 
+  TABLE_NAME,COLUMN_NAME,CONSTRAINT_NAME, REFERENCED_TABLE_NAME,REFERENCED_COLUMN_NAME
+FROM
+  INFORMATION_SCHEMA.KEY_COLUMN_USAGE
+WHERE
+  REFERENCED_TABLE_SCHEMA = (SELECT DATABASE()) AND
+  REFERENCED_TABLE_NAME = '<insert_table_name>' AND
+  REFERENCED_COLUMN_NAME = '<insert_column_name>';
+```
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diff --git a/MySQL/sql/all_foreign_keys_to_table_or_column.sql b/MySQL/sql/all_foreign_keys_to_table_or_column.sql
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+# Find all tables whose foreign key refers to the table/column
+
+# BY TABLE
+SELECT 
+  TABLE_NAME,COLUMN_NAME,CONSTRAINT_NAME, REFERENCED_TABLE_NAME,REFERENCED_COLUMN_NAME
+FROM
+  INFORMATION_SCHEMA.KEY_COLUMN_USAGE
+WHERE
+  REFERENCED_TABLE_SCHEMA = (SELECT DATABASE()) AND
+  REFERENCED_TABLE_NAME = '<insert_table_name>';
+  
+  
+# BY TABLE COLUMN
+SELECT 
+  TABLE_NAME,COLUMN_NAME,CONSTRAINT_NAME, REFERENCED_TABLE_NAME,REFERENCED_COLUMN_NAME
+FROM
+  INFORMATION_SCHEMA.KEY_COLUMN_USAGE
+WHERE
+  REFERENCED_TABLE_SCHEMA = (SELECT DATABASE()) AND
+  REFERENCED_TABLE_NAME = '<insert_table_name>' AND
+  REFERENCED_COLUMN_NAME = '<insert_column_name>';
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