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how to update the particular records of DB table without causing any performance issues?

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i had a scenario to update only one field in a db table for particular records so i am using the update syntax like below in loop.

 

loop at lt_ztable into ls_ztable

 

Update ztable set zfield 6 = abap_true

                         where zfield 1 =  ls_ztable_fild1

                         where zfield 3 =  ls_ztable_fild3.

 

endloop.

 

i think it is not the right way to update the table the table inside the loop because it face the performance issue.

so i am trying to update the table outside the loop but it cant update all particular record which i need.

 

if i use Update ztable from table lt_ztable it updates only one record.

 

 

is there any solution  to update the table to meet the requirements without causing any  performance issues ( like hamper the data base).

 

looking for the correct solution.


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