How to change the value of an internal table without loop?

Hello Everyone,

Thank you for giving your time. I have an internal table having thousands of records. How can I replace the value of a variable in one go without using loops.

Ex. -

      LOOP AT gt_bseg_02 INTO gs_bseg_02.

        IF gs_bseg_02-koart = ''.

          gs_bseg_02-koart = 'XYZ'.

        ENDIF. " IF gs_bseg_02-koart = ''

modify gt_bseg_02 from gs_bseg_02.

      ENDLOOP. " LOOP AT gt_bseg_02 INTO gs_bseg_02

Is there any single statement to do this? like we can simple delete the records without using loops with the delete statement.

Regards

Mani