ABAP Select data from SAP table WRF_PPW_PPDCALC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRF_PPW_PPDCALC
*  INTO TABLE @DATA(IT_WRF_PPW_PPDCALC2).
*--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_WRF_PPW_PPDCALC INDEX 1 INTO DATA(WA_WRF_PPW_PPDCALC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRF_PPW_PPDCALC>-MANDT = 1.
<WRF_PPW_PPDCALC>-GUID = 1.
<WRF_PPW_PPDCALC>-PARENT = 1.
<WRF_PPW_PPDCALC>-REFERENCE = 1.
<WRF_PPW_PPDCALC>-KBELN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRF_PPW_PPDCALC-KBELP, sy-vline,
  WA_WRF_PPW_PPDCALC-VKORG, sy-vline,
  WA_WRF_PPW_PPDCALC-VTWEG, sy-vline,
  WA_WRF_PPW_PPDCALC-PLTYP, sy-vline,
  WA_WRF_PPW_PPDCALC-FILGR, sy-vline,
  WA_WRF_PPW_PPDCALC-BGINT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRF_PPW_PPDCALC 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_WRF_PPW_PPDCALC 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_WRF_PPW_PPDCALC INTO WA_WRF_PPW_PPDCALC.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_WRF_PPW_PPDCALC_STR, 
MANDT TYPE STRING,
GUID TYPE STRING,
PARENT TYPE STRING,
REFERENCE TYPE STRING,
KBELN TYPE STRING,
KBELP TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
PLTYP TYPE STRING,
FILGR TYPE STRING,
BGINT TYPE STRING,
WERKS TYPE STRING,
VKKAB TYPE STRING,
VKKBI TYPE STRING,
TIMEST_CALC TYPE STRING,
ENDPA_CALC TYPE STRING,
ENDNA_CALC TYPE STRING,
WAERS_CALC TYPE STRING,
VRKPE_CALC TYPE STRING,
REFSITE_VK TYPE STRING,
WEIGH_AVERAGE_VK TYPE STRING,
AVERAGE_VK TYPE STRING,
MIN_VK TYPE STRING,
SORTKEY_PA TYPE STRING,
AKTIV TYPE STRING,
LOEKZ TYPE STRING,
REFSITE_VK_ORIG TYPE STRING,
WEIGH_AVRG_VK_OR TYPE STRING,
AVERAGE_VK_ORIG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRF_PPW_PPDCALC_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_WRF_PPW_PPDCALC_STR-MANDT sy-vline 
WA_WRF_PPW_PPDCALC_STR-GUID sy-vline 
WA_WRF_PPW_PPDCALC_STR-PARENT sy-vline 
WA_WRF_PPW_PPDCALC_STR-REFERENCE sy-vline 
WA_WRF_PPW_PPDCALC_STR-KBELN sy-vline 
WA_WRF_PPW_PPDCALC_STR-KBELP sy-vline 
WA_WRF_PPW_PPDCALC_STR-VKORG sy-vline 
WA_WRF_PPW_PPDCALC_STR-VTWEG sy-vline 
WA_WRF_PPW_PPDCALC_STR-PLTYP sy-vline 
WA_WRF_PPW_PPDCALC_STR-FILGR sy-vline 
WA_WRF_PPW_PPDCALC_STR-BGINT sy-vline 
WA_WRF_PPW_PPDCALC_STR-WERKS sy-vline 
WA_WRF_PPW_PPDCALC_STR-VKKAB sy-vline 
WA_WRF_PPW_PPDCALC_STR-VKKBI sy-vline 
WA_WRF_PPW_PPDCALC_STR-TIMEST_CALC sy-vline 
WA_WRF_PPW_PPDCALC_STR-ENDPA_CALC sy-vline 
WA_WRF_PPW_PPDCALC_STR-ENDNA_CALC sy-vline 
WA_WRF_PPW_PPDCALC_STR-WAERS_CALC sy-vline 
WA_WRF_PPW_PPDCALC_STR-VRKPE_CALC sy-vline 
WA_WRF_PPW_PPDCALC_STR-REFSITE_VK sy-vline 
WA_WRF_PPW_PPDCALC_STR-WEIGH_AVERAGE_VK sy-vline 
WA_WRF_PPW_PPDCALC_STR-AVERAGE_VK sy-vline 
WA_WRF_PPW_PPDCALC_STR-MIN_VK sy-vline 
WA_WRF_PPW_PPDCALC_STR-SORTKEY_PA sy-vline 
WA_WRF_PPW_PPDCALC_STR-AKTIV sy-vline 
WA_WRF_PPW_PPDCALC_STR-LOEKZ sy-vline 
WA_WRF_PPW_PPDCALC_STR-REFSITE_VK_ORIG sy-vline 
WA_WRF_PPW_PPDCALC_STR-WEIGH_AVRG_VK_OR sy-vline 
WA_WRF_PPW_PPDCALC_STR-AVERAGE_VK_ORIG sy-vline      INTO ld_text SEPARATED BY SPACE.

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