Set SQL Update statement in ABAP without Loop

Hi Gurus,

How do I write this statement in ABAP, as shown in Oracle syntax. I do not want to use a loop as it is too inefficient.It will be executed in an ABAP program.

update /BIC/APOI_O0200
   set /BIC/PKDOCDATE = /BIC/DOC_DATE
      /BIC/PKDELDATE = /BIC/SCL_DELDAT
where /BIC/PKDOCDATE = '        ' or /BIC/PKDELDATE = '        '

Basically, it's a table update setting 2 fields equal to 2 other fields where with of the fields is equal to spaces in the active table.

Thanks in advance!

Gregg