ABAP Select data from SAP table VDPOPO into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VDPOPO 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 VDPOPO. 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 VDPOPO 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_VDPOPO TYPE STANDARD TABLE OF VDPOPO,
      WA_VDPOPO TYPE VDPOPO,
      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: <VDPOPO> TYPE VDPOPO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VDPOPO
*  INTO TABLE @DATA(IT_VDPOPO2).
*--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_VDPOPO INDEX 1 INTO DATA(WA_VDPOPO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VDPOPO>-MANDT = 1.
<VDPOPO>-BUKRS = 1.
<VDPOPO>-STYP = 1.
<VDPOPO>-RHORD = 1.
<VDPOPO>-SVYM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VDPOPO-SVNR, sy-vline,
  WA_VDPOPO-RORD, sy-vline,
  WA_VDPOPO-RPNR, sy-vline,
  WA_VDPOPO-RANL, sy-vline,
  WA_VDPOPO-SREG, sy-vline,
  WA_VDPOPO-SLREG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VDPOPO 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_VDPOPO 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_VDPOPO INTO WA_VDPOPO.


*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 RANL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VDPOPO-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VDPOPO-RANL.
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_VDPOPO_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
STYP TYPE STRING,
RHORD TYPE STRING,
SVYM TYPE STRING,
SVNR TYPE STRING,
RORD TYPE STRING,
RPNR TYPE STRING,
RANL TYPE STRING,
SREG TYPE STRING,
SLREG TYPE STRING,
STBEA TYPE STRING,
XDNINFO TYPE STRING,
DOFFAM TYPE STRING,
DOFFBIS TYPE STRING,
DEFSZ TYPE STRING,
DELFZ TYPE STRING,
DLSV TYPE STRING,
PEFFZINS TYPE STRING,
SBWHR TYPE STRING,
BVKWR TYPE STRING,
BVKW2 TYPE STRING,
BZKWR TYPE STRING,
BZKW2 TYPE STRING,
BRPWR TYPE STRING,
BRPW2 TYPE STRING,
BRIWR TYPE STRING,
BRIW2 TYPE STRING,
BMIWR TYPE STRING,
BMIW2 TYPE STRING,
BATWR TYPE STRING,
BATW2 TYPE STRING,
BATZWR TYPE STRING,
BATZW2 TYPE STRING,
BPTWR TYPE STRING,
BPTW2 TYPE STRING,
BPTZWR TYPE STRING,
BPTZW2 TYPE STRING,
BAVWR TYPE STRING,
BAVW2 TYPE STRING,
BVAWR TYPE STRING,
BVAW2 TYPE STRING,
TSTAMP TYPE STRING,
DERFASS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VDPOPO_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_VDPOPO_STR-MANDT sy-vline 
WA_VDPOPO_STR-BUKRS sy-vline 
WA_VDPOPO_STR-STYP sy-vline 
WA_VDPOPO_STR-RHORD sy-vline 
WA_VDPOPO_STR-SVYM sy-vline 
WA_VDPOPO_STR-SVNR sy-vline 
WA_VDPOPO_STR-RORD sy-vline 
WA_VDPOPO_STR-RPNR sy-vline 
WA_VDPOPO_STR-RANL sy-vline 
WA_VDPOPO_STR-SREG sy-vline 
WA_VDPOPO_STR-SLREG sy-vline 
WA_VDPOPO_STR-STBEA sy-vline 
WA_VDPOPO_STR-XDNINFO sy-vline 
WA_VDPOPO_STR-DOFFAM sy-vline 
WA_VDPOPO_STR-DOFFBIS sy-vline 
WA_VDPOPO_STR-DEFSZ sy-vline 
WA_VDPOPO_STR-DELFZ sy-vline 
WA_VDPOPO_STR-DLSV sy-vline 
WA_VDPOPO_STR-PEFFZINS sy-vline 
WA_VDPOPO_STR-SBWHR sy-vline 
WA_VDPOPO_STR-BVKWR sy-vline 
WA_VDPOPO_STR-BVKW2 sy-vline 
WA_VDPOPO_STR-BZKWR sy-vline 
WA_VDPOPO_STR-BZKW2 sy-vline 
WA_VDPOPO_STR-BRPWR sy-vline 
WA_VDPOPO_STR-BRPW2 sy-vline 
WA_VDPOPO_STR-BRIWR sy-vline 
WA_VDPOPO_STR-BRIW2 sy-vline 
WA_VDPOPO_STR-BMIWR sy-vline 
WA_VDPOPO_STR-BMIW2 sy-vline 
WA_VDPOPO_STR-BATWR sy-vline 
WA_VDPOPO_STR-BATW2 sy-vline 
WA_VDPOPO_STR-BATZWR sy-vline 
WA_VDPOPO_STR-BATZW2 sy-vline 
WA_VDPOPO_STR-BPTWR sy-vline 
WA_VDPOPO_STR-BPTW2 sy-vline 
WA_VDPOPO_STR-BPTZWR sy-vline 
WA_VDPOPO_STR-BPTZW2 sy-vline 
WA_VDPOPO_STR-BAVWR sy-vline 
WA_VDPOPO_STR-BAVW2 sy-vline 
WA_VDPOPO_STR-BVAWR sy-vline 
WA_VDPOPO_STR-BVAW2 sy-vline 
WA_VDPOPO_STR-TSTAMP sy-vline 
WA_VDPOPO_STR-DERFASS sy-vline      INTO ld_text SEPARATED BY SPACE.

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