REPORT  z05_14.

TYPES: BEGIN OF line,
    col1 TYPE i,
    col2 TYPE i,
    col3 TYPE i,
  END OF line.
*DATA itab TYPE STANDARD TABLE OF line WITH KEY col1
*               WITH HEADER LINE.

*DATA itab TYPE SORTED TABLE OF line WITH UNIQUE KEY col1
*               WITH HEADER LINE.

DATA itab TYPE HASHED TABLE OF line WITH UNIQUE KEY col1
               WITH HEADER LINE.

DO 1500000 TIMES.
  itab-col1 = sy-index.
  itab-col2 = sy-index.
  itab-col3 = sy-index.
  INSERT table itab.
ENDDO.

READ TABLE itab WITH KEY col1 = 999999.