Archive for 9 月 27, 2007

Wordpress 2.3: wp_post2cat does not exist

在升級 Wordpress 2.3 以後,發表文章時可能會噴「wp_post2cat does not exist」錯誤訊息。

主因是 2.3 升級程式會將 wp_post2cat 以及 wp_categories 兩個資料表刪除,而下列外掛或佈景會需要用到此兩個資料表:

  • Google Sitemaps Generator older than 3.0
  • Posts by Author plugin
  • Ultimate Tag Warrior
  • K2 Theme

詳見:Solution for 2.3 database errors / wp_post2cat does not exist

臨時解決方案 - 將這兩個 table 重建回來

wp_post2cat

  1. CREATE TABLE wp_post2cat(rel_id bigint(20) NOT NULL AUTO_INCREMENT, post_id bigint(20) NOT NULL default 0, category_id bigint(20) NOT NULL default 0, PRIMARY KEY (rel_id), KEY post_id(post_id, category_id)) ENGINE = MYISAM DEFAULT CHARSET = utf8 AUTO_INCREMENT =1;

wp_categories

  1. CREATE TABLE wp_categories(cat_ID bigint(20) NOT NULL AUTO_INCREMENT, cat_name varchar(55) NOT NULL default "", category_nicename varchar(200) NOT NULL default "", category_description longtext NOT NULL, category_parent bigint(20) NOT NULL default 0, category_count bigint(20) NOT NULL default 0, link_count bigint(20) NOT NULL default 0, posts_private tinyint(1) NOT NULL default 0, links_private tinyint(1) NOT NULL default 0, PRIMARY KEY (cat_ID), KEY category_nicename(category_nicename )) ENGINE = MYISAM DEFAULT CHARSET = utf8 AUTO_INCREMENT =1;

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本日無用知識

請使用 Microsoft Excel 2007 計算 850 x 77.1…

答案會是「100000」

看來是浮點數出了問題,不過只要將該儲存格的數值繼續做減、乘、除法運算,就會得出正確解答。

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