MySQL error in file: /engine/modules/functions.php at line 1521

Error Number: 1021

The Error returned was:
Disk full (/dev/shm/#sql_461b_33); waiting for someone to free some space...

SQL query:

SELECT p.id, p.autor, p.date, p.short_story, CHAR_LENGTH(p.full_story) as full_story, p.xfields, p.title, p.category, p.alt_name, p.comm_num, p.allow_comm, p.fixed, p.tags, e.news_read, e.allow_rate, e.rating, e.vote_num, e.votes, e.view_edit, e.editdate, e.editor, e.reason FROM dle_post p LEFT JOIN dle_post_extras e ON (p.id=e.news_id) WHERE category regexp '[[:<:]](2|3|4|5|6|7|8|9|10|11|12|13|14|15|16|17|18|19|20|21|22|23|24|25|28|29|30|31|32|33|35|36|37|39|40|42|43|44|46|47|48|49|50|51|52|53|54|55|56|57|58|59|60|61|62|63|64|65|66|67|69|70|71|73|74|75|76|77|78|79|80|81|83|85|86|87|88|89|90|92|93|94|95|96|97|98|100|102|103|104|105|106|107|108|110|111|113|114|115|116|117|118|119|120|121|122|123|124|125|126|127|128|132|133|134|135|136|137|138|139|141|142|143|144)[[:>:]]' AND approve=1 ORDER BY RAND() LIMIT 0,3