Backport changes from #14051

Changed foreign key restrict from set null to no action for sqlserver
Updated sqlserver schema default foreign key action unit tests

src/Database/Schema/SqlserverSchema.php

@@ -314,7 +314,7 @@ class SqlserverSchema extends BaseSchema
     {
         $parent = parent::_foreignOnClause($on);
 
-        return $parent === 'RESTRICT' ? parent::_foreignOnClause(TableSchema::ACTION_SET_NULL) : $parent;
+        return $parent === 'RESTRICT' ? parent::_foreignOnClause(TableSchema::ACTION_NO_ACTION) : $parent;
     }
 
     /**

tests/TestCase/Database/Schema/SqlserverSchemaTest.php

@@ -783,31 +783,31 @@ SQL;
                 'author_id_idx',
                 ['type' => 'foreign', 'columns' => ['author_id'], 'references' => ['authors', 'id']],
                 'CONSTRAINT [author_id_idx] FOREIGN KEY ([author_id]) ' .
-                'REFERENCES [authors] ([id]) ON UPDATE SET NULL ON DELETE SET NULL',
+                'REFERENCES [authors] ([id]) ON UPDATE NO ACTION ON DELETE NO ACTION',
             ],
             [
                 'author_id_idx',
                 ['type' => 'foreign', 'columns' => ['author_id'], 'references' => ['authors', 'id'], 'update' => 'cascade'],
                 'CONSTRAINT [author_id_idx] FOREIGN KEY ([author_id]) ' .
-                'REFERENCES [authors] ([id]) ON UPDATE CASCADE ON DELETE SET NULL',
+                'REFERENCES [authors] ([id]) ON UPDATE CASCADE ON DELETE NO ACTION',
             ],
             [
                 'author_id_idx',
                 ['type' => 'foreign', 'columns' => ['author_id'], 'references' => ['authors', 'id'], 'update' => 'setDefault'],
                 'CONSTRAINT [author_id_idx] FOREIGN KEY ([author_id]) ' .
-                'REFERENCES [authors] ([id]) ON UPDATE SET DEFAULT ON DELETE SET NULL',
+                'REFERENCES [authors] ([id]) ON UPDATE SET DEFAULT ON DELETE NO ACTION',
             ],
             [
                 'author_id_idx',
                 ['type' => 'foreign', 'columns' => ['author_id'], 'references' => ['authors', 'id'], 'update' => 'setNull'],
                 'CONSTRAINT [author_id_idx] FOREIGN KEY ([author_id]) ' .
-                'REFERENCES [authors] ([id]) ON UPDATE SET NULL ON DELETE SET NULL',
+                'REFERENCES [authors] ([id]) ON UPDATE SET NULL ON DELETE NO ACTION',
             ],
             [
                 'author_id_idx',
                 ['type' => 'foreign', 'columns' => ['author_id'], 'references' => ['authors', 'id'], 'update' => 'noAction'],
                 'CONSTRAINT [author_id_idx] FOREIGN KEY ([author_id]) ' .
-                'REFERENCES [authors] ([id]) ON UPDATE NO ACTION ON DELETE SET NULL',
+                'REFERENCES [authors] ([id]) ON UPDATE NO ACTION ON DELETE NO ACTION',
             ],
         ];
     }