InternalError

ADODB_Exception: postgres7 error: [-1: ERROR:  operator does not exist: character varying = bigint
LINE 6: ...ic.sb_category_event ON (public.sb_event.kategori = public.s...
                                                             ^
HINT:  No operator matches the given name and argument type(s). You might need to add explicit type casts.] in EXECUTE("SELECT sb_event.*,
				  public.sb_category_event.title AS title_category,
				  to_char(public.sb_event.tgl,'DD-MM-YYYY') AS tgl
				FROM
				  public.sb_event
				  LEFT OUTER JOIN public.sb_category_event ON (public.sb_event.kategori = public.sb_category_event.id)  WHERE sb_event.id=36 ")

#0 /home/sloki/user/t33023/sites/ekonomisyariah.net/www/framework/Data/adodb/adodb.inc.php(874): adodb_throw('postgres7', 'EXECUTE', -1, 'ERROR:  operato...', 'SELECT sb_event...', false, Object(ADODB_postgres7))
#1 /home/sloki/user/t33023/sites/ekonomisyariah.net/www/framework/Data/adodb/adodb.inc.php(848): ADOConnection->_Execute('SELECT sb_event...', false)
#2 [internal function]: ADOConnection->Execute('SELECT sb_event...')
#3 /home/sloki/user/t33023/sites/ekonomisyariah.net/www/framework/Data/TAdodb.php(114): call_user_func_array(Array, Array)
#4 [internal function]: TAdodb->__call('Execute', Array)
#5 /home/sloki/user/t33023/sites/ekonomisyariah.net/www/application/EventModule/DataModule.php(116): TAdodb->Execute('SELECT sb_event...')
#6 /home/sloki/user/t33023/sites/ekonomisyariah.net/www/application/EventModule/ViewDetailPage.php(14): DataModule->selectEvent('36')
#7 /home/sloki/user/t33023/sites/ekonomisyariah.net/www/framework/Web/UI/TControl.php(419): ViewDetailPage->onLoad(Object(TEventParameter))
#8 /home/sloki/user/t33023/sites/ekonomisyariah.net/www/framework/Web/UI/TPage.php(1079): TControl->onLoadRecursive(Object(TEventParameter))
#9 /home/sloki/user/t33023/sites/ekonomisyariah.net/www/framework/Web/UI/TPage.php(955): TPage->onLoadRecursive(Object(TEventParameter))
#10 /home/sloki/user/t33023/sites/ekonomisyariah.net/www/framework/TApplication.php(483): TPage->execute()
#11 /home/sloki/user/t33023/sites/ekonomisyariah.net/www/index.php(7): TApplication->run()
#12 {main}