Abap Delete Duplicates From Internal Table. ABAP Internal Table Performance for STANDARD SORTED and HASHED Table If we delete some other internal table in LOOP using Parallel Cursor technique it might be better In this case how the internal table sorting and delete duplicates will work as the sequence of the field is changed in the sorting and deleting.
Maintain Data Consistency When Using Database Operations Sap Flash from sapflash.com
To delete all duplicate entries from a sorted internal table (eg just after SORT) you can use the DELETE ADJACENT DUPLICATES FROM itab statement You can use the COMPARING adition to limit the fields that are used to test for duplicate entries egSORT i_tab by matnr werks logortDELETE ADJACENT DUPLICATES FROM itab COMPARING matnr werksAll duplicates.
ABAP DELETE DUPLICATES Statement syntax and functionality
DELETE ADJACENT DUPLICATES FROM itab out>write_data( itab )>display( ) ENDMETHOD ENDCLASS STARTOFSELECTION demo=>main( ) Description In the mainmethod a standard table is created and filled The first DELETEstatement deletes the second row because it has the same content as the first row.
How to eliminate duplicate entries in internal tables
INSERT vbeln INTO TABLE sales_orders_unique ENDLOOP SORT sales_orders_unique DELETE ADJACENT DUPLICATES FROM sales_orders_unique Sorting an internal table followed by a DELETE ADJACENT DUPLICATES statement to remove duplicates A classic in the ABAP universe and your weapon of choice on older systems.
How to Delete All Duplicates from an ITAB? Toolbox Tech
Delete Adjacent Duplicate 711 PM DELETE ADJACENT DUPLICATE statement works logically on sorted standard table and sorted table with nonunique key.
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How to DELETE ADJACENT duplicates in ABAP
So generally I see no imperative to remove duplicates before each and every query However things may go awry if the optimizer is suboptimal and there is a large number of duplicates So if you expect duplicates it may be better to keep to the safe side and remove them before the query Also note that range tables have a length restriction.
