调整优化升级数据库脚本。

application/data/update/database.php

@@ -1,15 +1,15 @@
 <?php
 /*2020.1000.1064*/
 if(empty($col_list[$pre.'website']['website_pic_screenshot'])){
-    $sql .= "ALTER TABLE `mac_website` ADD `website_pic_screenshot`  text  DEFAULT  '';";
+    $sql .= "ALTER TABLE `mac_website` ADD `website_pic_screenshot`  text;";
     $sql .="\r";
 }
 if(empty($col_list[$pre.'art']['art_pic_screenshot'])){
-    $sql .= "ALTER TABLE `mac_art` ADD `art_pic_screenshot`  text DEFAULT  '';";
+    $sql .= "ALTER TABLE `mac_art` ADD `art_pic_screenshot`  text;";
     $sql .="\r";
 }
 if(empty($col_list[$pre.'vod']['vod_pic_screenshot'])){
-    $sql .= "ALTER TABLE `mac_vod` ADD `vod_pic_screenshot`  text  DEFAULT  '';";
+    $sql .= "ALTER TABLE `mac_vod` ADD `vod_pic_screenshot`  text;";
     $sql .="\r";
 }
 /*2020.1000.1063*/

application/install/sql/install.sql

@@ -123,7 +123,7 @@ CREATE TABLE `mac_art` (
   `art_pic` varchar(255) NOT NULL DEFAULT '' ,
   `art_pic_thumb` varchar(255) NOT NULL DEFAULT '' ,
   `art_pic_slide` varchar(255) NOT NULL DEFAULT '' ,
-  `art_pic_screenshot` text NOT NULL,
+  `art_pic_screenshot` text,
   `art_blurb` varchar(255) NOT NULL DEFAULT '' ,
   `art_remarks` varchar(100) NOT NULL DEFAULT '' ,
   `art_jumpurl` varchar(150) NOT NULL DEFAULT '' ,
@@ -697,7 +697,7 @@ CREATE TABLE `mac_vod` (
   `vod_pic` varchar(255) NOT NULL DEFAULT '' ,
   `vod_pic_thumb` varchar(255) NOT NULL DEFAULT '' ,
   `vod_pic_slide` varchar(255) NOT NULL DEFAULT '' ,
-  `vod_pic_screenshot` text NOT NULL,
+  `vod_pic_screenshot` text,
   `vod_actor` varchar(255) NOT NULL DEFAULT '' ,
   `vod_director` varchar(255) NOT NULL DEFAULT '' ,
   `vod_writer` varchar(100) NOT NULL DEFAULT '' ,
@@ -819,7 +819,7 @@ CREATE TABLE `mac_website` (
   `website_sort` int(10) NOT NULL DEFAULT '0',
   `website_jumpurl` varchar(255) NOT NULL DEFAULT '',
   `website_pic` varchar(255) NOT NULL DEFAULT '',
-  `website_pic_screenshot` text NOT NULL,
+  `website_pic_screenshot` text,
   `website_logo` varchar(255) NOT NULL DEFAULT '',
   `website_area` varchar(20) NOT NULL DEFAULT '',
   `website_lang` varchar(10) NOT NULL DEFAULT '',