Discuz! Database Error

(1370) execute command denied to user 'bags163bbs'@'localhost' for routine 't.rand'
SELECT ft.* FROM forum_typeoptionvar ft inner join forum_thread t on ft.tid = t.tid where ft.sortid=7 group by ft.tid order by t.rand() LIMIT 0,8

PHP Debug

No.FileLineCode
1forum.php69require(%s)
2source/module/forum/forum_forumdisplay.php964include(%s)
3data/template/2_diy_forum_forumdisplay.tpl.php3627block_display(%s)
4source/function/function_core.php804block_display_batch(%s)
5source/function/function_block.php120block_fetch_content(%s)
6source/function/function_block.php154block_updatecache(%s, true)
7source/function/function_block.php243block_information->getdata(Array, Array)
8source/class/block/information/block_information.php74discuz_database::query(%s)
9source/class/discuz/discuz_database.php136db_driver_mysql->query(%s, false, false)
10source/class/db/db_driver_mysql.php153db_driver_mysql->halt(%s, %d, %s)
11source/class/db/db_driver_mysql.php224break()
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