ABAP Select data from SAP table /DSD/VC_VPP_TREE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /DSD/VC_VPP_TREE 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 /DSD/VC_VPP_TREE. 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 /DSD/VC_VPP_TREE 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_/DSD/VC_VPP_TREE TYPE STANDARD TABLE OF /DSD/VC_VPP_TREE,
      WA_/DSD/VC_VPP_TREE TYPE /DSD/VC_VPP_TREE,
      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: </DSD/VC_VPP_TREE> TYPE /DSD/VC_VPP_TREE.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /DSD/VC_VPP_TREE
  INTO TABLE IT_/DSD/VC_VPP_TREE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /DSD/VC_VPP_TREE
*  INTO TABLE @DATA(IT_/DSD/VC_VPP_TREE2).
*--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_/DSD/VC_VPP_TREE INDEX 1 INTO DATA(WA_/DSD/VC_VPP_TREE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/DSD/VC_VPP_TREE ASSIGNING </DSD/VC_VPP_TREE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</DSD/VC_VPP_TREE>-ANRED = 1.
</DSD/VC_VPP_TREE>-NAME1 = 1.
</DSD/VC_VPP_TREE>-NAME2 = 1.
</DSD/VC_VPP_TREE>-STRAS = 1.
</DSD/VC_VPP_TREE>-PSTLZ = 1.

ENDLOOP.

LOOP AT IT_/DSD/VC_VPP_TREE INTO WA_/DSD/VC_VPP_TREE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/DSD/VC_VPP_TREE-ORT01, sy-vline,
  WA_/DSD/VC_VPP_TREE-TELF1, sy-vline,
  WA_/DSD/VC_VPP_TREE-TELFX, sy-vline,
  WA_/DSD/VC_VPP_TREE-REGIO, sy-vline,
  WA_/DSD/VC_VPP_TREE-LAND1, sy-vline,
  WA_/DSD/VC_VPP_TREE-SORTL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/DSD/VC_VPP_TREE 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_/DSD/VC_VPP_TREE 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_/DSD/VC_VPP_TREE INTO WA_/DSD/VC_VPP_TREE.


*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 VPID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/VC_VPP_TREE-VPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/VC_VPP_TREE-VPID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TSTRN, internal->external for field DURA
CALL FUNCTION 'CONVERSION_EXIT_TSTRN_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/VC_VPP_TREE-DURA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/VC_VPP_TREE-DURA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTRN, internal->external for field DTRVD
CALL FUNCTION 'CONVERSION_EXIT_TSTRN_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/VC_VPP_TREE-DTRVD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/VC_VPP_TREE-DTRVD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTRN, internal->external for field TRVD
CALL FUNCTION 'CONVERSION_EXIT_TSTRN_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/VC_VPP_TREE-TRVD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/VC_VPP_TREE-TRVD.
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_/DSD/VC_VPP_TREE_STR, 
ANRED TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
STRAS TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
TELF1 TYPE STRING,
TELFX TYPE STRING,
REGIO TYPE STRING,
LAND1 TYPE STRING,
SORTL TYPE STRING,
MANDT TYPE STRING,
VPID TYPE STRING,
VPPOS TYPE STRING,
SEQU TYPE STRING,
KUNNR TYPE STRING,
INACTIVE TYPE STRING,
RULEID_CUST TYPE STRING,
DURA TYPE STRING,
DTRVD TYPE STRING,
TRVD TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPARTE TYPE STRING,
PARNR TYPE STRING,
ABLAD TYPE STRING,
FMORE TYPE STRING,
VANRED TYPE STRING,
VNAME1 TYPE STRING,
VNAME2 TYPE STRING,
VSTRAS TYPE STRING,
VPSTLZ TYPE STRING,
VORT TYPE STRING,
VREGIO TYPE STRING,
VLAND TYPE STRING,
MOAB1 TYPE STRING,
MOBI1 TYPE STRING,
MOAB2 TYPE STRING,
MOBI2 TYPE STRING,
DIAB1 TYPE STRING,
DIBI1 TYPE STRING,
DIAB2 TYPE STRING,
DIBI2 TYPE STRING,
MIAB1 TYPE STRING,
MIBI1 TYPE STRING,
MIAB2 TYPE STRING,
MIBI2 TYPE STRING,
DOAB1 TYPE STRING,
DOBI1 TYPE STRING,
DOAB2 TYPE STRING,
DOBI2 TYPE STRING,
FRAB1 TYPE STRING,
FRBI1 TYPE STRING,
FRAB2 TYPE STRING,
FRBI2 TYPE STRING,
SAAB1 TYPE STRING,
SABI1 TYPE STRING,
SAAB2 TYPE STRING,
SABI2 TYPE STRING,
SOAB1 TYPE STRING,
SOBI1 TYPE STRING,
SOAB2 TYPE STRING,
SOBI2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/DSD/VC_VPP_TREE_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_/DSD/VC_VPP_TREE_STR-ANRED sy-vline 
WA_/DSD/VC_VPP_TREE_STR-NAME1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-NAME2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-STRAS sy-vline 
WA_/DSD/VC_VPP_TREE_STR-PSTLZ sy-vline 
WA_/DSD/VC_VPP_TREE_STR-ORT01 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-TELF1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-TELFX sy-vline 
WA_/DSD/VC_VPP_TREE_STR-REGIO sy-vline 
WA_/DSD/VC_VPP_TREE_STR-LAND1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-SORTL sy-vline 
WA_/DSD/VC_VPP_TREE_STR-MANDT sy-vline 
WA_/DSD/VC_VPP_TREE_STR-VPID sy-vline 
WA_/DSD/VC_VPP_TREE_STR-VPPOS sy-vline 
WA_/DSD/VC_VPP_TREE_STR-SEQU sy-vline 
WA_/DSD/VC_VPP_TREE_STR-KUNNR sy-vline 
WA_/DSD/VC_VPP_TREE_STR-INACTIVE sy-vline 
WA_/DSD/VC_VPP_TREE_STR-RULEID_CUST sy-vline 
WA_/DSD/VC_VPP_TREE_STR-DURA sy-vline 
WA_/DSD/VC_VPP_TREE_STR-DTRVD sy-vline 
WA_/DSD/VC_VPP_TREE_STR-TRVD sy-vline 
WA_/DSD/VC_VPP_TREE_STR-VKORG sy-vline 
WA_/DSD/VC_VPP_TREE_STR-VTWEG sy-vline 
WA_/DSD/VC_VPP_TREE_STR-SPARTE sy-vline 
WA_/DSD/VC_VPP_TREE_STR-PARNR sy-vline 
WA_/DSD/VC_VPP_TREE_STR-ABLAD sy-vline 
WA_/DSD/VC_VPP_TREE_STR-FMORE sy-vline 
WA_/DSD/VC_VPP_TREE_STR-VANRED sy-vline 
WA_/DSD/VC_VPP_TREE_STR-VNAME1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-VNAME2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-VSTRAS sy-vline 
WA_/DSD/VC_VPP_TREE_STR-VPSTLZ sy-vline 
WA_/DSD/VC_VPP_TREE_STR-VORT sy-vline 
WA_/DSD/VC_VPP_TREE_STR-VREGIO sy-vline 
WA_/DSD/VC_VPP_TREE_STR-VLAND sy-vline 
WA_/DSD/VC_VPP_TREE_STR-MOAB1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-MOBI1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-MOAB2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-MOBI2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-DIAB1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-DIBI1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-DIAB2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-DIBI2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-MIAB1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-MIBI1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-MIAB2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-MIBI2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-DOAB1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-DOBI1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-DOAB2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-DOBI2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-FRAB1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-FRBI1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-FRAB2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-FRBI2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-SAAB1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-SABI1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-SAAB2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-SABI2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-SOAB1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-SOBI1 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-SOAB2 sy-vline 
WA_/DSD/VC_VPP_TREE_STR-SOBI2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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