Dynamic Select Statement
check this code...
*-----
For dynamic table name....
REPORT demo_select_dynamic_database .
DATA wa TYPE scarr.
DATA name(10) TYPE c VALUE 'SCARR'.
SELECT *
INTO wa
FROM (name) CLIENT SPECIFIED
WHERE mandt = '000'.
WRITE: / wa-carrid, wa-carrname.
ENDSELECT.
*-----
For dynamic field list
REPORT demo_select_dynamic_columns .
DATA: itab TYPE STANDARD TABLE OF spfli,
wa LIKE LINE OF itab.
DATA: line(72) TYPE c,
list LIKE TABLE OF line(72).
line = ' CITYFROM CITYTO '.
APPEND line TO list.
SELECT DISTINCT (list)
INTO CORRESPONDING FIELDS OF TABLE itab
FROM spfli.
IF sy-subrc EQ 0.
LOOP AT itab INTO wa.
WRITE: / wa-cityfrom, wa-cityto.
ENDLOOP.
ENDIF.