Fixes #3567: Fixed the bug that smallint was treated as string for PostgreSQL

framework/CHANGELOG.md

@@ -30,6 +30,7 @@ Yii Framework 2 Change Log
 - Bug #3458: Fixed the bug that the image rendered by `CaptchaAction` was using a wrong content type (MDMunir, qiangxue)
 - Bug #3522: Fixed BaseFileHelper::normalizePath to allow a (.) for the current path. (skotos)
 - Bug #3548: Fixed the bug that X-Rate-Limit-Remaining header is always zero when using RateLimiter (qiangxue)
+- Bug #3567: Fixed the bug that smallint was treated as string for PostgreSQL (qiangxue)
 - Bug: Fixed inconsistent return of `\yii\console\Application::runAction()` (samdark)
 - Enh #2264: `CookieCollection::has()` will return false for expired or removed cookies (qiangxue)
 - Enh #2435: `yii\db\IntegrityException` is now thrown on database integrity errors instead of general `yii\db\Exception` (samdark)

framework/db/pgsql/Schema.php

@@ -44,6 +44,7 @@ class Schema extends \yii\db\Schema
         'double precision' => self::TYPE_DECIMAL,
         'inet' => self::TYPE_STRING,
         'smallint' => self::TYPE_SMALLINT,
+        'int2' => self::TYPE_INTEGER,
         'int4' => self::TYPE_INTEGER,
         'int8' => self::TYPE_BIGINT,
         'integer' => self::TYPE_INTEGER,