ABAP Select data from SAP table WRF_PPW_PPDHEADINFO_STY 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_PPDHEADINFO_STY 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_PPDHEADINFO_STY. 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_PPDHEADINFO_STY 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_PPDHEADINFO_STY TYPE STANDARD TABLE OF WRF_PPW_PPDHEADINFO_STY,
      WA_WRF_PPW_PPDHEADINFO_STY TYPE WRF_PPW_PPDHEADINFO_STY,
      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_PPDHEADINFO_STY> TYPE WRF_PPW_PPDHEADINFO_STY.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRF_PPW_PPDHEADINFO_STY
*  INTO TABLE @DATA(IT_WRF_PPW_PPDHEADINFO_STY2).
*--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_PPDHEADINFO_STY INDEX 1 INTO DATA(WA_WRF_PPW_PPDHEADINFO_STY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRF_PPW_PPDHEADINFO_STY>-GUID = 1.
<WRF_PPW_PPDHEADINFO_STY>-PPDNR = 1.
<WRF_PPW_PPDHEADINFO_STY>-TYPE = 1.
<WRF_PPW_PPDHEADINFO_STY>-PPD_ART = 1.
<WRF_PPW_PPDHEADINFO_STY>-AKTNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRF_PPW_PPDHEADINFO_STY-DEAKT, sy-vline,
  WA_WRF_PPW_PPDHEADINFO_STY-EPTYP, sy-vline,
  WA_WRF_PPW_PPDHEADINFO_STY-WAERS, sy-vline,
  WA_WRF_PPW_PPDHEADINFO_STY-VKORG, sy-vline,
  WA_WRF_PPW_PPDHEADINFO_STY-VTWEG, sy-vline,
  WA_WRF_PPW_PPDHEADINFO_STY-USRGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRF_PPW_PPDHEADINFO_STY 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_PPDHEADINFO_STY 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_PPDHEADINFO_STY INTO WA_WRF_PPW_PPDHEADINFO_STY.


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

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_WRF_PPW_PPDHEADINFO_STY-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_PPW_PPDHEADINFO_STY-SPRAS.
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_WRF_PPW_PPDHEADINFO_STY_STR, 
GUID TYPE STRING,
PPDNR TYPE STRING,
TYPE TYPE STRING,
PPD_ART TYPE STRING,
AKTNR TYPE STRING,
DEAKT TYPE STRING,
EPTYP TYPE STRING,
WAERS TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
USRGRP TYPE STRING,
OS_TYPE TYPE STRING,
NO_BUDGET TYPE STRING,
NO_CALCULATION TYPE STRING,
VERSION TYPE STRING,
STATUS TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
MULTIPL TYPE STRING,
UPDATED TYPE STRING,
UPDNAM TYPE STRING,
CREATED TYPE STRING,
CRENAM TYPE STRING,
STATUS_VERSION_ORIG TYPE STRING,
BNAME TYPE STRING,
SPRAS TYPE STRING,
PPD_TEXT TYPE STRING,
BUDG_TYPE TYPE STRING,
DISTCHAIN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRF_PPW_PPDHEADINFO_STY_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_PPDHEADINFO_STY_STR-GUID sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-PPDNR sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-TYPE sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-PPD_ART sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-AKTNR sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-DEAKT sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-EPTYP sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-WAERS sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-VKORG sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-VTWEG sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-USRGRP sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-OS_TYPE sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-NO_BUDGET sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-NO_CALCULATION sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-VERSION sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-STATUS sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-DATAB sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-DATBI sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-MULTIPL sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-UPDATED sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-UPDNAM sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-CREATED sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-CRENAM sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-STATUS_VERSION_ORIG sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-BNAME sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-SPRAS sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-PPD_TEXT sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-BUDG_TYPE sy-vline 
WA_WRF_PPW_PPDHEADINFO_STY_STR-DISTCHAIN sy-vline      INTO ld_text SEPARATED BY SPACE.

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