ABAP Select data from SAP table MDG_BS_SUPPL_BP_VENGEN_X 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_VENGEN_X 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_VENGEN_X. 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_VENGEN_X 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_VENGEN_X TYPE STANDARD TABLE OF MDG_BS_SUPPL_BP_VENGEN_X,
      WA_MDG_BS_SUPPL_BP_VENGEN_X TYPE MDG_BS_SUPPL_BP_VENGEN_X,
      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_VENGEN_X> TYPE MDG_BS_SUPPL_BP_VENGEN_X.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDG_BS_SUPPL_BP_VENGEN_X
*  INTO TABLE @DATA(IT_MDG_BS_SUPPL_BP_VENGEN_X2).
*--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_VENGEN_X INDEX 1 INTO DATA(WA_MDG_BS_SUPPL_BP_VENGEN_X2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDG_BS_SUPPL_BP_VENGEN_X>-ASSGNM_ID = 1.
<MDG_BS_SUPPL_BP_VENGEN_X>-BP_HEADER = 1.
<MDG_BS_SUPPL_BP_VENGEN_X>-ACTSS = 1.
<MDG_BS_SUPPL_BP_VENGEN_X>-BAHNS = 1.
<MDG_BS_SUPPL_BP_VENGEN_X>-DLGRP = 1.

ENDLOOP.

LOOP AT IT_MDG_BS_SUPPL_BP_VENGEN_X INTO WA_MDG_BS_SUPPL_BP_VENGEN_X.
*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_VENGEN_X-DTAMS, sy-vline,
  WA_MDG_BS_SUPPL_BP_VENGEN_X-EMNFR, sy-vline,
  WA_MDG_BS_SUPPL_BP_VENGEN_X-ESRNR, sy-vline,
  WA_MDG_BS_SUPPL_BP_VENGEN_X-FISKN, sy-vline,
  WA_MDG_BS_SUPPL_BP_VENGEN_X-FISKU, sy-vline,
  WA_MDG_BS_SUPPL_BP_VENGEN_X-IPISP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDG_BS_SUPPL_BP_VENGEN_X 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_VENGEN_X 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_VENGEN_X INTO WA_MDG_BS_SUPPL_BP_VENGEN_X.


*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_VENGEN_X_STR, 
ASSGNM_ID TYPE STRING,
BP_HEADER TYPE STRING,
ACTSS TYPE STRING,
BAHNS TYPE STRING,
DLGRP TYPE STRING,
DTAMS TYPE STRING,
EMNFR TYPE STRING,
ESRNR TYPE STRING,
FISKN TYPE STRING,
FISKU TYPE STRING,
IPISP TYPE STRING,
KONZS TYPE STRING,
KRAUS TYPE STRING,
KTOKK TYPE STRING,
LIFNR TYPE STRING,
LNRZA TYPE STRING,
LOEVM TYPE STRING,
LTSNA TYPE STRING,
NODEL_A TYPE STRING,
PLKAL TYPE STRING,
PODKZB TYPE STRING,
QSSYS TYPE STRING,
QSSYSDAT TYPE STRING,
REF_BPVEN TYPE STRING,
REF_VENGE TYPE STRING,
REF_VNGEN TYPE STRING,
REGSS TYPE STRING,
REVDB TYPE STRING,
RF_VENDGN TYPE STRING,
RF_VENGEN TYPE STRING,
SCACD TYPE STRING,
SFRGR TYPE STRING,
SPERM TYPE STRING,
SPERQ TYPE STRING,
SPERR TYPE STRING,
STENR TYPE STRING,
STGDL TYPE STRING,
STKZA TYPE STRING,
STKZU TYPE STRING,
TAXBS TYPE STRING,
VBUND TYPE STRING,
VEN_FITYP TYPE STRING,
VEN_KFBUS TYPE STRING,
VEN_KFIND TYPE STRING,
VEN_KFREP TYPE STRING,
VEN_KUNNR TYPE STRING,
WERKR TYPE STRING,
WERKS TYPE STRING,
XZEMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDG_BS_SUPPL_BP_VENGEN_X_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_VENGEN_X_STR-ASSGNM_ID sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-BP_HEADER sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-ACTSS sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-BAHNS sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-DLGRP sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-DTAMS sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-EMNFR sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-ESRNR sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-FISKN sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-FISKU sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-IPISP sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-KONZS sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-KRAUS sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-KTOKK sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-LIFNR sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-LNRZA sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-LOEVM sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-LTSNA sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-NODEL_A sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-PLKAL sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-PODKZB sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-QSSYS sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-QSSYSDAT sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-REF_BPVEN sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-REF_VENGE sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-REF_VNGEN sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-REGSS sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-REVDB sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-RF_VENDGN sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-RF_VENGEN sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-SCACD sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-SFRGR sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-SPERM sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-SPERQ sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-SPERR sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-STENR sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-STGDL sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-STKZA sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-STKZU sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-TAXBS sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-VBUND sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-VEN_FITYP sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-VEN_KFBUS sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-VEN_KFIND sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-VEN_KFREP sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-VEN_KUNNR sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-WERKR sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-WERKS sy-vline 
WA_MDG_BS_SUPPL_BP_VENGEN_X_STR-XZEMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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