Oracle Update Join Syntax

update  
(
select  a. *   from  da_page a,da_jbxx b, da_pic c 
where  a.da_id = b.id 
and  a.pic_id = c.id 
and  a.ztdm  >=   ' 020 '  
and  a.ztdm  <   ' 060 '  
and  (a.shbz = ' 0 '   or  a.shbz = ' R ' ) 
and  a.jsbz = ' N '  
and  b.swjg_dm  like   ' 14201% '
)
set  jsbz = ' Y ' ,shr_dm = ' 14201000087 '
where   1 = 1   and  rownum  <=   ' 10 '