MDEV-28491 Uuid. "UPDATE/DELETE" not working "WHERE id IN (SELECT id FROM ..)"

This is a 10.5 version of the patch.

plugin/type_inet/mysql-test/type_inet/type_inet6.result

@@ -2194,3 +2194,22 @@ SELECT IF(1, '::', a) AS f FROM t1 GROUP BY 'foo' HAVING f != '::1';
 f
 ::
 DROP TABLE t1;
+#
+# MDEV-28491 Uuid. "UPDATE/DELETE" not working "WHERE id IN (SELECT id FROM ..)"
+#
+CREATE TABLE companies (id INET6, name varchar(10));
+INSERT INTO companies (id) values ('00::01');
+CREATE TABLE divisions (company_id INET6);
+INSERT INTO divisions (company_id) values ('00::01');
+SELECT * FROM companies WHERE id IN (SELECT company_id FROM divisions);
+id	name
+::1	NULL
+UPDATE companies SET name = 'value' WHERE id IN (SELECT company_id FROM divisions);
+SELECT * FROM companies;
+id	name
+::1	value
+DELETE FROM companies WHERE id IN (SELECT company_id FROM divisions);
+SELECT * FROM companies;
+id	name
+DROP TABLE divisions;
+DROP TABLE companies;

plugin/type_inet/mysql-test/type_inet/type_inet6.test

@@ -1612,3 +1612,21 @@ SELECT IF(1, '::', a) AS f FROM t1 GROUP BY 'foo' HAVING f != '';
 SELECT IF(1, '::', a) AS f FROM t1 GROUP BY 'foo' HAVING f != '::';
 SELECT IF(1, '::', a) AS f FROM t1 GROUP BY 'foo' HAVING f != '::1';
 DROP TABLE t1;
+
+
+--echo #
+--echo # MDEV-28491 Uuid. "UPDATE/DELETE" not working "WHERE id IN (SELECT id FROM ..)"
+--echo #
+
+CREATE TABLE companies (id INET6, name varchar(10));
+INSERT INTO companies (id) values ('00::01');
+
+CREATE TABLE divisions (company_id INET6);
+INSERT INTO divisions (company_id) values ('00::01');
+SELECT * FROM companies WHERE id IN (SELECT company_id FROM divisions);
+UPDATE companies SET name = 'value' WHERE id IN (SELECT company_id FROM divisions);
+SELECT * FROM companies;
+DELETE FROM companies WHERE id IN (SELECT company_id FROM divisions);
+SELECT * FROM companies;
+DROP TABLE divisions;
+DROP TABLE companies;

plugin/type_inet/sql_type_inet.cc

@@ -1109,9 +1109,14 @@ class Item_cache_inet6: public Item_cache
     if (!example)
       return false;
     value_cached= true;
-    null_value= example->val_native_with_conversion_result(current_thd,
-                                                           &m_value,
-                                                           type_handler());
+    /*
+      Merge comments: in 10.7 this code migrated to
+      Item_cache_fbt in to sql/sql_type_fixedbin.h
+    */
+    null_value_inside= null_value=
+      example->val_native_with_conversion_result(current_thd,
+                                                 &m_value,
+                                                 type_handler());
     return true;
   }
   String* val_str(String *to)