ABAP Select data from SAP table LIEFER_VORGABE_DATEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LIEFER_VORGABE_DATEN
*  INTO TABLE @DATA(IT_LIEFER_VORGABE_DATEN2).
*--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_LIEFER_VORGABE_DATEN INDEX 1 INTO DATA(WA_LIEFER_VORGABE_DATEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LIEFER_VORGABE_DATEN>-VGBEL = 1.
<LIEFER_VORGABE_DATEN>-VGPOS = 1.
<LIEFER_VORGABE_DATEN>-BWART = 1.
<LIEFER_VORGABE_DATEN>-BDART = 1.
<LIEFER_VORGABE_DATEN>-PLART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LIEFER_VORGABE_DATEN-SERNR, sy-vline,
  WA_LIEFER_VORGABE_DATEN-AESKD, sy-vline,
  WA_LIEFER_VORGABE_DATEN-LFIMG, sy-vline,
  WA_LIEFER_VORGABE_DATEN-LGMNG, sy-vline,
  WA_LIEFER_VORGABE_DATEN-LFIMG_FLO, sy-vline,
  WA_LIEFER_VORGABE_DATEN-LGMNG_FLO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LIEFER_VORGABE_DATEN 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_LIEFER_VORGABE_DATEN 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_LIEFER_VORGABE_DATEN INTO WA_LIEFER_VORGABE_DATEN.


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

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LIEFER_VORGABE_DATEN-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LIEFER_VORGABE_DATEN-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LIEFER_VORGABE_DATEN-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LIEFER_VORGABE_DATEN-MEINS.
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_LIEFER_VORGABE_DATEN_STR, 
VGBEL TYPE STRING,
VGPOS TYPE STRING,
BWART TYPE STRING,
BDART TYPE STRING,
PLART TYPE STRING,
SERNR TYPE STRING,
AESKD TYPE STRING,
LFIMG TYPE STRING,
LGMNG TYPE STRING,
LFIMG_FLO TYPE STRING,
LGMNG_FLO TYPE STRING,
UMVKZ TYPE STRING,
UMVKN TYPE STRING,
UMREV TYPE STRING,
AKMNG TYPE STRING,
VRKME TYPE STRING,
MEINS TYPE STRING,
KZFME TYPE STRING,
DATUM TYPE STRING,
DATVW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LIEFER_VORGABE_DATEN_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_LIEFER_VORGABE_DATEN_STR-VGBEL sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-VGPOS sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-BWART sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-BDART sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-PLART sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-SERNR sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-AESKD sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-LFIMG sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-LGMNG sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-LFIMG_FLO sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-LGMNG_FLO sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-UMVKZ sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-UMVKN sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-UMREV sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-AKMNG sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-VRKME sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-MEINS sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-KZFME sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-DATUM sy-vline 
WA_LIEFER_VORGABE_DATEN_STR-DATVW sy-vline      INTO ld_text SEPARATED BY SPACE.

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