1、bug的修复

2、内核更新

core/library/think/db/builder/Mysql.php

@@ -31,7 +31,7 @@ class Mysql extends Builder
         $key = trim($key);
         if (strpos($key, '$.') && false === strpos($key, '(')) {
             // JSON字段支持
-            list($field, $name) = explode($key, '$.');
+            list($field, $name) = explode('$.', $key);
             $key                = 'jsn_extract(' . $field . ', \'$.\'.' . $name . ')';
         }
         if (!preg_match('/[,\'\"\*\(\)`.\s]/', $key)) {

core/library/think/db/builder/Sqlsrv.php

@@ -20,7 +20,7 @@ class Sqlsrv extends Builder
 {
     protected $selectSql       = 'SELECT T1.* FROM (SELECT thinkphp.*, ROW_NUMBER() OVER (%ORDER%) AS ROW_NUMBER FROM (SELECT %DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING%) AS thinkphp) AS T1 %LIMIT%%COMMENT%';
     protected $selectInsertSql = 'SELECT %DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING%';
-    protected $updateSql       = 'UPDATE %TABLE% SET %SET% %JOIN% %WHERE% %LIMIT% %LOCK%%COMMENT%';
+    protected $updateSql       = 'UPDATE %TABLE% SET %SET% FROM %TABLE% %JOIN% %WHERE% %LIMIT% %LOCK%%COMMENT%';
     protected $deleteSql       = 'DELETE FROM %TABLE% %USING% %JOIN% %WHERE% %LIMIT% %LOCK%%COMMENT%';
 
     /**