Delta logic on date fields form source

hi  please help me on

i have 2 date fields in source system one crate date and one is last edit date need to perform delta logic by using sysdate as comparing value sysdate will populated form target table can any body please post the sql command for using in where clause in query transform

now i am using logic like

Create date>sysdate

now need to add edit date also need check both the fields in source