Fetch from variable (dynamic)

Question

Hi,
I have data with 4 fields in one internal table.
Last field have 108 records.like (040.952,957......).
i want to fetch each record from internal table and concatenate 'A' and lastfield in one variable.
First time variable have value A040.(A040 is a data base table).
i want to fetch all values from A040 with the input of first field of internal table and place it into main internal table.
(each time variable having diferent values,value acts as database table,those are having different structures)
EX:
Main itab.(i written code for itab)
f1       f2    f3      f4
200   1      dfg    040
234   2       dfgh 952
235   3     asd     040
241   5     wer     957
now i need like this.
loop at itab.
concatenate A itab-f4 into V_var.
select * from (v_var)
into ........? (please fill here )
where f1 = itab-f1.
And final output i need.
f1       f2    f3       f4       k1   k2                k 3    k4       k5
200   1      dfg     040     v      a                 cvb   125
234   2      dfgh   952     X       t                         125    material
235   3     asd     040    n       a                  cvn  125
241   5     wer     957    c     material                           123
in variable different values are stored,and those having deiffernet structure.my problem with into statement.
Please help me ....

Answer 1

FIELD-SYMBOLS : <lt_outtab> TYPE ANY TABLE,  
                            <ls_outtab> TYPE ANY,
                              <l_fld> TYPE ANY.
DATA:struct_type TYPE REF TO cl_abap_structdescr,
         comp_tab    TYPE cl_abap_structdescr=>component_table.
Creation of the output table.
struct_type ?= cl_abap_typedescr=>describe_by_name( p_tabnam ).
comp_tab = struct_type->get_components( ),
comp_fld    TYPE cl_abap_structdescr=>component.
struct_type = cl_abap_structdescr=>create( comp_tab ).
itab_type   = cl_abap_tabledescr=>create( struct_type ).
l_wa_name = 'l_WA'.
CREATE DATA dref TYPE HANDLE itab_type.
ASSIGN dref->* TO <lt_outtab>.
CREATE DATA dref TYPE HANDLE struct_type.
ASSIGN dref->* TO <ls_outtab>.
THE dynamic select
SELECT          *   
  FROM     (p_tabnam)   
   INTO CORRESPONDING FIELDS OF TABLE <lt_outtab>  
    WHERE    (lt_where). 
*display of the results
LOOP AT <lt_outtab> ASSIGNING <ls_outtab>.
  LOOP AT comp_tab INTO comp_fld. 
    ASSIGN COMPONENT comp_fld-name OF STRUCTURE <ls_outtab> TO <l_fld>.  
   WRITE: <l_fld>.
  ENDLOOP.  
SKIP.
ENDLOOP.
for more information check
https://webphl07.phl.sap.corp/~sapidb/011000358700002805272003E