ABAP Select data from SAP table MDG_BS_SUPPL_BP_COMPNY_X_OLD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MDG_BS_SUPPL_BP_COMPNY_X_OLD 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 MDG_BS_SUPPL_BP_COMPNY_X_OLD. 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 MDG_BS_SUPPL_BP_COMPNY_X_OLD 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_MDG_BS_SUPPL_BP_COMPNY_X_OLD TYPE STANDARD TABLE OF MDG_BS_SUPPL_BP_COMPNY_X_OLD,
      WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD TYPE MDG_BS_SUPPL_BP_COMPNY_X_OLD,
      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: <MDG_BS_SUPPL_BP_COMPNY_X_OLD> TYPE MDG_BS_SUPPL_BP_COMPNY_X_OLD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDG_BS_SUPPL_BP_COMPNY_X_OLD
*  INTO TABLE @DATA(IT_MDG_BS_SUPPL_BP_COMPNY_X_OLD2).
*--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_MDG_BS_SUPPL_BP_COMPNY_X_OLD INDEX 1 INTO DATA(WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDG_BS_SUPPL_BP_COMPNY_X_OLD>-ALTKN = 1.
<MDG_BS_SUPPL_BP_COMPNY_X_OLD>-BEGRU_B = 1.
<MDG_BS_SUPPL_BP_COMPNY_X_OLD>-BLNKZ = 1.
<MDG_BS_SUPPL_BP_COMPNY_X_OLD>-CERDT = 1.
<MDG_BS_SUPPL_BP_COMPNY_X_OLD>-DATLZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD-EIKTO, sy-vline,
  WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD-FDGRV, sy-vline,
  WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD-FRGRP, sy-vline,
  WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD-GUZTE, sy-vline,
  WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD-HWAERS, sy-vline,
  WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD-INTAD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD 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_MDG_BS_SUPPL_BP_COMPNY_X_OLD 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_MDG_BS_SUPPL_BP_COMPNY_X_OLD INTO WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD.


*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.
ENDFORM. 

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

TYPES: BEGIN OF T_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR, 
ALTKN TYPE STRING,
BEGRU_B TYPE STRING,
BLNKZ TYPE STRING,
CERDT TYPE STRING,
DATLZ TYPE STRING,
EIKTO TYPE STRING,
FDGRV TYPE STRING,
FRGRP TYPE STRING,
GUZTE TYPE STRING,
HWAERS TYPE STRING,
INTAD TYPE STRING,
KULTG TYPE STRING,
KVERM TYPE STRING,
LNRZB TYPE STRING,
LNRZE TYPE STRING,
LOEVM_B TYPE STRING,
MINDK TYPE STRING,
NODEL TYPE STRING,
PERNR TYPE STRING,
QSBGR TYPE STRING,
QSZDT TYPE STRING,
QSZNR TYPE STRING,
REPRF TYPE STRING,
SPERR_B TYPE STRING,
TLFNS TYPE STRING,
TLFXS TYPE STRING,
UZAWE TYPE STRING,
VZSKZ TYPE STRING,
WEBTR TYPE STRING,
XAUSZ TYPE STRING,
XDEZV TYPE STRING,
XEDIP TYPE STRING,
XPORE TYPE STRING,
XVERR TYPE STRING,
ZAHLS TYPE STRING,
ZGRUP TYPE STRING,
ZINDT TYPE STRING,
ZINRT TYPE STRING,
ZSABE TYPE STRING,
ZTERM TYPE STRING,
ZUAWA TYPE STRING,
ZWELS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_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_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-ALTKN sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-BEGRU_B sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-BLNKZ sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-CERDT sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-DATLZ sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-EIKTO sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-FDGRV sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-FRGRP sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-GUZTE sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-HWAERS sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-INTAD sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-KULTG sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-KVERM sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-LNRZB sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-LNRZE sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-LOEVM_B sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-MINDK sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-NODEL sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-PERNR sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-QSBGR sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-QSZDT sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-QSZNR sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-REPRF sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-SPERR_B sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-TLFNS sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-TLFXS sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-UZAWE sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-VZSKZ sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-WEBTR sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-XAUSZ sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-XDEZV sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-XEDIP sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-XPORE sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-XVERR sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-ZAHLS sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-ZGRUP sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-ZINDT sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-ZINRT sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-ZSABE sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-ZTERM sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-ZUAWA sy-vline 
WA_MDG_BS_SUPPL_BP_COMPNY_X_OLD_STR-ZWELS sy-vline      INTO ld_text SEPARATED BY SPACE.

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