1.如何接收為空的參數(shù)。如果參數(shù)的值為空,則and ias.origin='' ",如果參數(shù)的值不為空,則 and ias.origin=?
="select * from itsm_assets ias,itsm_department ide
="select * from itsm_assets ias,itsm_department ide
where ias.del = '0'
and ias.department=ide.id
and ide.name=?"
+if((@origin==null or @origin=='')," and ias.origin='' "," and ias.origin=? ") +
"order by ias.date_recorded desc"