ABAP Select data from SAP table ROG_VBAKAP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROG_VBAKAP
*  INTO TABLE @DATA(IT_ROG_VBAKAP2).
*--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_ROG_VBAKAP INDEX 1 INTO DATA(WA_ROG_VBAKAP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROG_VBAKAP>-MANDT = 1.
<ROG_VBAKAP>-VBELN = 1.
<ROG_VBAKAP>-POSNR = 1.
<ROG_VBAKAP>-AUART = 1.
<ROG_VBAKAP>-KUNNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROG_VBAKAP-VKORG, sy-vline,
  WA_ROG_VBAKAP-VTWEG, sy-vline,
  WA_ROG_VBAKAP-SPART, sy-vline,
  WA_ROG_VBAKAP-MATNR, sy-vline,
  WA_ROG_VBAKAP-CUOBJ, sy-vline,
  WA_ROG_VBAKAP-IHREZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROG_VBAKAP 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_ROG_VBAKAP 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_ROG_VBAKAP INTO WA_ROG_VBAKAP.


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

*Conversion exit AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_ROG_VBAKAP-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROG_VBAKAP-AUART.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROG_VBAKAP-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROG_VBAKAP-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field SCMATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROG_VBAKAP-SCMATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROG_VBAKAP-SCMATNR.
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_ROG_VBAKAP_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
AUART TYPE STRING,
KUNNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
MATNR TYPE STRING,
CUOBJ TYPE STRING,
IHREZ TYPE STRING,
LIFSK TYPE STRING,
LFSTK TYPE STRING,
ERDAT TYPE STRING,
BUMP TYPE STRING,
SCNBR TYPE STRING,
SCITEM TYPE STRING,
SCMATNR TYPE STRING,
PROFILE TYPE STRING,
VARIANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROG_VBAKAP_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_ROG_VBAKAP_STR-MANDT sy-vline 
WA_ROG_VBAKAP_STR-VBELN sy-vline 
WA_ROG_VBAKAP_STR-POSNR sy-vline 
WA_ROG_VBAKAP_STR-AUART sy-vline 
WA_ROG_VBAKAP_STR-KUNNR sy-vline 
WA_ROG_VBAKAP_STR-VKORG sy-vline 
WA_ROG_VBAKAP_STR-VTWEG sy-vline 
WA_ROG_VBAKAP_STR-SPART sy-vline 
WA_ROG_VBAKAP_STR-MATNR sy-vline 
WA_ROG_VBAKAP_STR-CUOBJ sy-vline 
WA_ROG_VBAKAP_STR-IHREZ sy-vline 
WA_ROG_VBAKAP_STR-LIFSK sy-vline 
WA_ROG_VBAKAP_STR-LFSTK sy-vline 
WA_ROG_VBAKAP_STR-ERDAT sy-vline 
WA_ROG_VBAKAP_STR-BUMP sy-vline 
WA_ROG_VBAKAP_STR-SCNBR sy-vline 
WA_ROG_VBAKAP_STR-SCITEM sy-vline 
WA_ROG_VBAKAP_STR-SCMATNR sy-vline 
WA_ROG_VBAKAP_STR-PROFILE sy-vline 
WA_ROG_VBAKAP_STR-VARIANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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