ABAP Select data from SAP table VNLVERP_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VNLVERP_S
*  INTO TABLE @DATA(IT_VNLVERP_S2).
*--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_VNLVERP_S INDEX 1 INTO DATA(WA_VNLVERP_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VNLVERP_S>-MANDT = 1.
<VNLVERP_S>-EINRI = 1.
<VNLVERP_S>-FACNUM = 1.
<VNLVERP_S>-VBELN = 1.
<VNLVERP_S>-POSNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VNLVERP_S-RECID, sy-vline,
  WA_VNLVERP_S-PRSCOD, sy-vline,
  WA_VNLVERP_S-LEIST, sy-vline,
  WA_VNLVERP_S-LNRLS, sy-vline,
  WA_VNLVERP_S-VLGNUM, sy-vline,
  WA_VNLVERP_S-NETWR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VNLVERP_S 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_VNLVERP_S 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_VNLVERP_S INTO WA_VNLVERP_S.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VNLVERP_S-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VNLVERP_S-EINRI.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field LNRLS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VNLVERP_S-LNRLS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VNLVERP_S-LNRLS.
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_VNLVERP_S_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
FACNUM TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
RECID TYPE STRING,
PRSCOD TYPE STRING,
LEIST TYPE STRING,
LNRLS TYPE STRING,
VLGNUM TYPE STRING,
NETWR TYPE STRING,
BET_BEDR TYPE STRING,
STATUS TYPE STRING,
FOUTCD TYPE STRING,
PSTAT TYPE STRING,
REMARK TYPE STRING,
RECDET_LNGTH TYPE STRING,
RECDET TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VNLVERP_S_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_VNLVERP_S_STR-MANDT sy-vline 
WA_VNLVERP_S_STR-EINRI sy-vline 
WA_VNLVERP_S_STR-FACNUM sy-vline 
WA_VNLVERP_S_STR-VBELN sy-vline 
WA_VNLVERP_S_STR-POSNR sy-vline 
WA_VNLVERP_S_STR-RECID sy-vline 
WA_VNLVERP_S_STR-PRSCOD sy-vline 
WA_VNLVERP_S_STR-LEIST sy-vline 
WA_VNLVERP_S_STR-LNRLS sy-vline 
WA_VNLVERP_S_STR-VLGNUM sy-vline 
WA_VNLVERP_S_STR-NETWR sy-vline 
WA_VNLVERP_S_STR-BET_BEDR sy-vline 
WA_VNLVERP_S_STR-STATUS sy-vline 
WA_VNLVERP_S_STR-FOUTCD sy-vline 
WA_VNLVERP_S_STR-PSTAT sy-vline 
WA_VNLVERP_S_STR-REMARK sy-vline 
WA_VNLVERP_S_STR-RECDET_LNGTH sy-vline 
WA_VNLVERP_S_STR-RECDET sy-vline 
WA_VNLVERP_S_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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