fix: default $null value

kenjis · kenjis · commit 56d095bccd63 · 2023-03-24T13:19:56.000+09:00
It should be `NULL`.
diff --git a/system/Database/Forge.php b/system/Database/Forge.php
@@ -153,7 +153,7 @@ class Forge
      *
      * @internal Used for marking nullable fields. Not covered by BC promise.
      */
-    protected $null = '';
+    protected $null = 'NULL';
 
     /**
      * DEFAULT value representation in CREATE/ALTER TABLE statements

Original file line number	Diff line number	Diff line change
`@@ -153,7 +153,7 @@ class Forge`
`153`	`153`	`*`
`154`	`154`	`* @internal Used for marking nullable fields. Not covered by BC promise.`
`155`	`155`	`*/`
`156`		`- protected $null = '';`
	`156`	`+ protected $null = 'NULL';`
`157`	`157`
`158`	`158`	`/**`
`159`	`159`	`* DEFAULT value representation in CREATE/ALTER TABLE statements`