ABAP Select data from SAP table PDMVCAMPAIR 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 PDMVCAMPAIR 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 PDMVCAMPAIR. 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 PDMVCAMPAIR 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_PDMVCAMPAIR TYPE STANDARD TABLE OF PDMVCAMPAIR,
      WA_PDMVCAMPAIR TYPE PDMVCAMPAIR,
      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: <PDMVCAMPAIR> TYPE PDMVCAMPAIR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PDMVCAMPAIR
*  INTO TABLE @DATA(IT_PDMVCAMPAIR2).
*--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_PDMVCAMPAIR INDEX 1 INTO DATA(WA_PDMVCAMPAIR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PDMVCAMPAIR>-MANDT = 1.
<PDMVCAMPAIR>-DSPMATERIALVALUECHAINNODEFROM = 1.
<PDMVCAMPAIR>-DSPMATERIALVALUECHAINNODETO = 1.
<PDMVCAMPAIR>-PROCESSCATEGORY = 1.
<PDMVCAMPAIR>-DOCUMENTREFERENCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PDMVCAMPAIR-PLANT, sy-vline,
  WA_PDMVCAMPAIR-BUSINESSTRANSACTIONTYPE, sy-vline,
  WA_PDMVCAMPAIR-BUSINESSTRANSACTIONTYPENAME, sy-vline,
  WA_PDMVCAMPAIR-PROCESSCATEGORYNAME, sy-vline,
  WA_PDMVCAMPAIR-LEDGERVALUATIONCURRENCYROLE, sy-vline,
  WA_PDMVCAMPAIR-VALUATIONQUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PDMVCAMPAIR 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_PDMVCAMPAIR 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_PDMVCAMPAIR INTO WA_PDMVCAMPAIR.


*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 CUNIT, internal->external for field VALUATIONQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PDMVCAMPAIR-VALUATIONQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDMVCAMPAIR-VALUATIONQUANTITYUNIT.
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_PDMVCAMPAIR_STR, 
MANDT TYPE STRING,
DSPMATERIALVALUECHAINNODEFROM TYPE STRING,
DSPMATERIALVALUECHAINNODETO TYPE STRING,
PROCESSCATEGORY TYPE STRING,
DOCUMENTREFERENCE TYPE STRING,
PLANT TYPE STRING,
BUSINESSTRANSACTIONTYPE TYPE STRING,
BUSINESSTRANSACTIONTYPENAME TYPE STRING,
PROCESSCATEGORYNAME TYPE STRING,
LEDGERVALUATIONCURRENCYROLE TYPE STRING,
VALUATIONQUANTITY TYPE STRING,
VALUATIONQUANTITYUNIT TYPE STRING,
INVENTORYAMTINCCCRCY TYPE STRING,
PRICEDIFFERENCEAMTINCCCRCY TYPE STRING,
EXCHRATEDIFFAMTINCOCODECRCY TYPE STRING,
CURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PDMVCAMPAIR_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_PDMVCAMPAIR_STR-MANDT sy-vline 
WA_PDMVCAMPAIR_STR-DSPMATERIALVALUECHAINNODEFROM sy-vline 
WA_PDMVCAMPAIR_STR-DSPMATERIALVALUECHAINNODETO sy-vline 
WA_PDMVCAMPAIR_STR-PROCESSCATEGORY sy-vline 
WA_PDMVCAMPAIR_STR-DOCUMENTREFERENCE sy-vline 
WA_PDMVCAMPAIR_STR-PLANT sy-vline 
WA_PDMVCAMPAIR_STR-BUSINESSTRANSACTIONTYPE sy-vline 
WA_PDMVCAMPAIR_STR-BUSINESSTRANSACTIONTYPENAME sy-vline 
WA_PDMVCAMPAIR_STR-PROCESSCATEGORYNAME sy-vline 
WA_PDMVCAMPAIR_STR-LEDGERVALUATIONCURRENCYROLE sy-vline 
WA_PDMVCAMPAIR_STR-VALUATIONQUANTITY sy-vline 
WA_PDMVCAMPAIR_STR-VALUATIONQUANTITYUNIT sy-vline 
WA_PDMVCAMPAIR_STR-INVENTORYAMTINCCCRCY sy-vline 
WA_PDMVCAMPAIR_STR-PRICEDIFFERENCEAMTINCCCRCY sy-vline 
WA_PDMVCAMPAIR_STR-EXCHRATEDIFFAMTINCOCODECRCY sy-vline 
WA_PDMVCAMPAIR_STR-CURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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