Title: Database Error
Last modified: August 18, 2016

---

# Database Error

 *  [schoolsout](https://wordpress.org/support/users/schoolsout/)
 * (@schoolsout)
 * [18 years, 6 months ago](https://wordpress.org/support/topic/database-error-9/)
 * Hi everyone,
 * I have some trouble with my wordpress system. I get a database error when I post
   an Article. I have is since I updated it from 2.0.11 to 2.3. Then i had runned
   the update.php succesfully. My Version now is **2.3.1**.
 * **This is my Error**
 * WordPress database error: [Table ‘schoolso_wordpress.wp_datapost2cat’ doesn’t
   exist]
    SELECT cat_ID AS ID, MAX(post_modified) AS last_mod FROM `wp_dataposts`
   p LEFT JOIN `wp_datapost2cat` pc ON p.ID = pc.post_id LEFT JOIN `wp_datacategories`
   c ON pc.category_id = c.cat_ID WHERE post_status = ‘publish’ GROUP BY cat_ID
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/schoolso/domains/schoolsout-online.nl/public_html/wp-includes/wp-db.
   php:160) in /home/schoolso/domains/schoolsout-online.nl/public_html/wp-includes/
   pluggable.php on line 391
 * I hope someone know the answer, so i can update my database. And the errors stop.
 * Greets,
 * Mike

Viewing 1 replies (of 1 total)

 *  [4k](https://wordpress.org/support/users/4k/)
 * (@4k)
 * [18 years, 6 months ago](https://wordpress.org/support/topic/database-error-9/#post-647842)
 * [info here](http://wordpress.org/tags/post2cat)

Viewing 1 replies (of 1 total)

The topic ‘Database Error’ is closed to new replies.

## Tags

 * [Database Error](https://wordpress.org/support/topic-tag/database-error/)
 * [post](https://wordpress.org/support/topic-tag/post/)
 * [version 2.3](https://wordpress.org/support/topic-tag/version-2-3/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [4k](https://wordpress.org/support/users/4k/)
 * Last activity: [18 years, 6 months ago](https://wordpress.org/support/topic/database-error-9/#post-647842)
 * Status: not resolved

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