Hi this is very urgent

Question

could u plz explain how to populate the data into  the final internal table in this program.
i need how to add this all select statement into one final internal table
plz provide me
i am using ALVgrid repors
could u plz explain clearly with comments 
very urgent
TABLES: eban,                 "Purchase Requisition
        ekko,                 "Purchasing Document Header
        mereq3328,            "Purchase Requisition: Contact
        cdpos,                "Change document items
        cdhdr,                "Change document header
        dd04t.                "R/3 DD: Data element texts
TYPE-POOLS: slis.
TYPES :
*declaration of type for internal table to be passed in ALV report as
*internal table.
      BEGIN OF typ_req1,
         statu               TYPE    eban-statu,                        "Processing status of purchase requisition
         banpr               TYPE    eban-banpr,                        "Requisition Processing State
         bsart               TYPE    eban-bsart,                        "Purchase requisition document type
         banfn               TYPE    eban-banfn,                        "Purchase requisition number
         bnfpo               TYPE    eban-bnfpo,                        "Item number of purchase requisition
         ebeln               TYPE    eban-ebeln,                        "Purchase order number
         ebelp               TYPE    eban-ebelp,                        "Purchase order item number
         matnr               TYPE    eban-matnr,                        "Material Number
         txz01               TYPE    eban-txz01,                        "Short text
         creator_name        TYPE    mereq3328-creator_name,            "Creator
         afnam               TYPE    eban-afnam,                        "Name of requisitioner/requester
         lifnr               TYPE    eban-lifnr,                        "Desired vendor
         flief               TYPE    eban-flief,                        "Fixed Vendor
         ekgrp               TYPE    ekko-ekgrp,                        "Purchasing Group
         tabkey              TYPE    cdpos-tabkey,                      "Item Number
         ddtext              TYPE    dd04t-ddtext,                      "Short Text
         chngind             TYPE    cdpos-chngind,                     "Action
         value_new           TYPE    cdpos-value_new,                   "New Value
         value_old           TYPE    cdpos-value_old,                   "Old Value
         username            TYPE    cdhdr-username,                    "Name
         udate               TYPE    cdhdr-udate,                       "Date
         utime               TYPE    cdhdr-utime,                       "Time
         changenr            TYPE    cdhdr-changenr,                    "Doc Number
         tcod                TYPE    cdhdr-tcode,                       "Transaction Code
      END OF typ_req1,
Type declaration for EBAN table fields
      BEGIN OF typ_eban,
         statu               TYPE    eban-statu,                        "Processing status of purchase requisition
         banpr               TYPE    eban-banpr,                        "Requisition Processing State
         bsart               TYPE    eban-bsart,                        "Purchase requisition document type
         banfn               TYPE    eban-banfn,                        "Purchase requisition number
         bnfpo               TYPE    eban-bnfpo,                        "Item number of purchase requisition
         ebeln               TYPE    eban-ebeln,                        "Purchase order number
         ebelp               TYPE    eban-ebelp,                        "Purchase order item number
         matnr               TYPE    eban-matnr,                        "Material Number
         txz01               TYPE    eban-txz01,                        "Short text
         afnam               TYPE    eban-afnam,                        "Name of requisitioner/requester
         lifnr               TYPE    eban-lifnr,                        "Desired vendor
         flief               TYPE    eban-flief,                        "Fixed Vendor
      END OF typ_eban,
Type declaration for ekko table fields
      BEGIN OF typ_ekko,
         ekgrp               TYPE    ekko-ekgrp,                        "Purchasing Group
      END OF typ_ekko,
Type declaration for cdpos table fields
      BEGIN OF typ_cdpos,
         fname               TYPE    cdpos-fname,
         changenr            TYPE    cdpos-changenr,                    "Doc Number
         objectclas          TYPE    cdpos-objectclas,                  "Object class
         objectid            TYPE    cdpos-objectid,                    "Object value
         tabkey              TYPE    cdpos-tabkey,                      "Item Number
         chngind             TYPE    cdpos-chngind,                     "Action
         value_new           TYPE    cdpos-value_new,                   "New Value
         value_old           TYPE    cdpos-value_old,                   "Old Value
        CHNGIND    type    cdpos-CHNGIND
      END OF typ_cdpos,
Type declaration for cdhdr table fields
      BEGIN OF typ_cdhdr,
         objectclas          TYPE    cdhdr-objectclas,                  "Object class
         objectid            TYPE    cdhdr-objectid,                    "Object value
         username            TYPE    cdhdr-username,                    "Name
         udate               TYPE    cdhdr-udate,                       "Date
         utime               TYPE    cdhdr-utime,                       "Time
         changenr            TYPE    cdhdr-changenr,                    "Doc Number
         tcod                TYPE    cdhdr-tcode,                       "Transaction Code
         change_ind          TYPE    cdhdr-change_ind,
         objectid1(10)       TYPE    c,
      END OF typ_cdhdr,
Type declaration for dd04t table fields
      BEGIN OF typ_dd04t,
         ddtext              TYPE    dd04t-ddtext,                      "Short Text
        END OF typ_dd04t,
Type declaration for dd04t table fields
      BEGIN OF typ_mereq3328,
         creator_name        TYPE    mereq3328-creator_name,            "Creator
      END OF typ_mereq3328.
*&   delcaratilon of internal table                                   *
      DATA:
  Internal table for final internal table
         it_req1             TYPE    STANDARD TABLE OF typ_req1,
  Internal table for eban table
         it_eban             TYPE    STANDARD TABLE OF typ_eban,
  Internal table for ekko table
         it_ekko             TYPE    STANDARD TABLE OF typ_ekko,
  Internal table for cdpos table
         it_cdpos            TYPE    STANDARD TABLE OF typ_cdpos,
  Internal table for cdhdr table
         it_cdhdr            TYPE    STANDARD TABLE OF typ_cdhdr,
  Internal table for cdhdr1 table
         it_dd04t            TYPE    STANDARD TABLE OF typ_dd04t,
  Internal table for mereq3328 table
         it_mereq3328        TYPE    STANDARD TABLE OF typ_mereq3328,
Internal table for ALV Field Catalog
       it_fieldcat_alv     TYPE   slis_t_fieldcat_alv,
Internal table for ALV Event
       it_events           TYPE   slis_t_event.
*& Declaration of Work Area
  work area for final internal table
     wa_req1 TYPE typ_req1,
  work area for eban table
         wa_eban             TYPE    typ_eban,
  work area for ekko table
         wa_ekko             TYPE    typ_ekko,
  work area for cdpos table
         wa_cdpos            TYPE    typ_cdpos,
  work area for cdhdr table
         wa_cdhdr            TYPE    typ_cdhdr,
  work area for dd04t table
         wa_dd04t            TYPE    typ_dd04t,
  work area for mereq3328 table
         wa_mereq3328        TYPE    typ_mereq3328.
Declaration  of work area for Field Catalog
       wa_fieldcat         TYPE    slis_fieldcat_alv,
SELECTION-SCREEN BEGIN OF BLOCK b WITH FRAME TITLE text-001.
SELECT-OPTIONS: s_bsart    FOR     eban-bsart   OBLIGATORY
                           DEFAULT 'znb1' TO 'znb2',                 "Purchase requisition document type
                s_banfn    FOR     eban-banfn,                       "Req Number
                s_bnfpo    FOR     eban-bnfpo,                       "Req Item Number
                s_ebeln    FOR     eban-ebeln,                       "Purchase Order Number
                s_ebelp    FOR     eban-ebelp,                       "Purchase Order Item Number
                s_matnr    FOR     eban-matnr.                       "Material Number
PARAMETER:      p_txz01    TYPE    eban-txz01.                       "Short text
SELECT-OPTIONS: s_creat    FOR     mereq3328-creator_name,           "Creator
                s_afnam    FOR     eban-afnam,                       "Requester
                s_lifnr    FOR     eban-lifnr,                       "Desired vendor
                s_flief    FOR     eban-flief.                       "Fixed Vendor
SELECTION-SCREEN END OF BLOCK b.
SELECT objectclas
             objectid
             changenr
             username
             udate
             utime
             tcode
             change_ind FROM cdhdr
             INTO TABLE it_cdhdr
             WHERE objectclas = 'BANF'
             AND   udate      =  sy-datum .
SELECT    objectclas
                objectid
                changenr
                chngind
                tabkey
                value_new
                value_old
                FROM cdpos INTO TABLE it_cdpos
                FOR ALL ENTRIES IN it_cdhdr
                WHERE changenr EQ it_cdhdr-changenr AND
                      chngind EQ it_cdhdr-change_ind AND
                      objectclas EQ it_cdhdr-objectclas AND
                      objectid EQ it_cdhdr-objectid.
IF NOT it_cdhdr[] IS INITIAL.
        SELECT banfn
               bnfpo
               bsart
               statu
               afnam
               txz01
               matnr
               lifnr
               ebeln
               ebelp
               banpr
               FROM  eban INTO TABLE it_eban
               WHERE "banfn = it_cdhdr-objectid
                  banfn IN s_banfn
                 AND bnfpo IN s_bnfpo
                 AND bsart IN s_bsart
                 AND matnr IN s_matnr
                 AND lifnr IN s_lifnr
                 AND flief IN s_flief.
      ENDIF.
IF NOT it_cdpos[] IS INITIAL.
        SELECT rollname
               ddtext
               FROM dd04t INTO TABLE it_dd04t
               FOR ALL ENTRIES IN it_cdpos
               WHERE rollname = it_cdpos-fname.

Answer 1

hi rajeshreddy,
create one global internal table for the all output fields,
then move all these fields into this global internal table  and pass into your gird FM.
i.e. see the below code for reference ,
loop at <itab> into <wa>.
read table <itab1> into <wa1> with key <keyfield> = <wa-field>.
if sy-subrc = 0.
move-correspondig <wa1> to <globalwa>.
move-correspondig <wa> to <globalwa>.
endif.
then read another <itab2> into <wa2> with key <keyfield> = <wa-field>.
if sy-subrc = 0.
move-correspondig <wa2> to <globalwa>.
endif.
endloop.
like this u can move all output fields into one global internal table but u should have relation among all the internal tables.
reward points if helpful,
regards,
seshu.