ABAP Select data from SAP table BPEG_ARCH into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BPEG_ARCH table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to BPEG_ARCH. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the BPEG_ARCH table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_BPEG_ARCH TYPE STANDARD TABLE OF BPEG_ARCH,
      WA_BPEG_ARCH TYPE BPEG_ARCH,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <BPEG_ARCH> TYPE BPEG_ARCH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BPEG_ARCH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BPEG_ARCH
  INTO TABLE IT_BPEG_ARCH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BPEG_ARCH
*  INTO TABLE @DATA(IT_BPEG_ARCH2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_BPEG_ARCH INDEX 1 INTO DATA(WA_BPEG_ARCH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BPEG_ARCH ASSIGNING <BPEG_ARCH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BPEG_ARCH>-MANDT = 1.
<BPEG_ARCH>-BELNR = 1.
<BPEG_ARCH>-BUZEI = 1.
<BPEG_ARCH>-WTGES = 1.
<BPEG_ARCH>-WLGES = 1.

ENDLOOP.

LOOP AT IT_BPEG_ARCH INTO WA_BPEG_ARCH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BPEG_ARCH-KALNR, sy-vline,
  WA_BPEG_ARCH-KLVAR, sy-vline,
  WA_BPEG_ARCH-LEDNR, sy-vline,
  WA_BPEG_ARCH-OBJNR, sy-vline,
  WA_BPEG_ARCH-POSIT, sy-vline,
  WA_BPEG_ARCH-TRGKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BPEG_ARCH you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_BPEG_ARCH TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_BPEG_ARCH INTO WA_BPEG_ARCH.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit NUMCV, internal->external for field LEDNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_BPEG_ARCH-LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BPEG_ARCH-LEDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WRTTP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BPEG_ARCH-WRTTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BPEG_ARCH-WRTTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BPEG_ARCH-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BPEG_ARCH-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_BPEG_ARCH-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BPEG_ARCH-FIPEX.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_BPEG_ARCH_STR, 
MANDT TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
WTGES TYPE STRING,
WLGES TYPE STRING,
KALNR TYPE STRING,
KLVAR TYPE STRING,
LEDNR TYPE STRING,
OBJNR TYPE STRING,
POSIT TYPE STRING,
TRGKZ TYPE STRING,
WRTTP TYPE STRING,
GEBER TYPE STRING,
VERSN TYPE STRING,
VORGA TYPE STRING,
TWAER TYPE STRING,
PLDAT TYPE STRING,
KURST TYPE STRING,
SUBVO TYPE STRING,
FAREA TYPE STRING,
WTGEV TYPE STRING,
WLGEV TYPE STRING,
FIKRS TYPE STRING,
FISTL TYPE STRING,
FIPEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BPEG_ARCH_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_BPEG_ARCH_STR-MANDT sy-vline 
WA_BPEG_ARCH_STR-BELNR sy-vline 
WA_BPEG_ARCH_STR-BUZEI sy-vline 
WA_BPEG_ARCH_STR-WTGES sy-vline 
WA_BPEG_ARCH_STR-WLGES sy-vline 
WA_BPEG_ARCH_STR-KALNR sy-vline 
WA_BPEG_ARCH_STR-KLVAR sy-vline 
WA_BPEG_ARCH_STR-LEDNR sy-vline 
WA_BPEG_ARCH_STR-OBJNR sy-vline 
WA_BPEG_ARCH_STR-POSIT sy-vline 
WA_BPEG_ARCH_STR-TRGKZ sy-vline 
WA_BPEG_ARCH_STR-WRTTP sy-vline 
WA_BPEG_ARCH_STR-GEBER sy-vline 
WA_BPEG_ARCH_STR-VERSN sy-vline 
WA_BPEG_ARCH_STR-VORGA sy-vline 
WA_BPEG_ARCH_STR-TWAER sy-vline 
WA_BPEG_ARCH_STR-PLDAT sy-vline 
WA_BPEG_ARCH_STR-KURST sy-vline 
WA_BPEG_ARCH_STR-SUBVO sy-vline 
WA_BPEG_ARCH_STR-FAREA sy-vline 
WA_BPEG_ARCH_STR-WTGEV sy-vline 
WA_BPEG_ARCH_STR-WLGEV sy-vline 
WA_BPEG_ARCH_STR-FIKRS sy-vline 
WA_BPEG_ARCH_STR-FISTL sy-vline 
WA_BPEG_ARCH_STR-FIPEX sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.