ABAP Select data from SAP table /SCWM/S_SP_A_HEAD_PRDP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_SP_A_HEAD_PRDP
*  INTO TABLE @DATA(IT_/SCWM/S_SP_A_HEAD_PRDP2).
*--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_/SCWM/S_SP_A_HEAD_PRDP INDEX 1 INTO DATA(WA_/SCWM/S_SP_A_HEAD_PRDP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_SP_A_HEAD_PRDP>-DOCID = 1.
</SCWM/S_SP_A_HEAD_PRDP>-CHANGEABLE_ICON = 1.
</SCWM/S_SP_A_HEAD_PRDP>-ERROR_STATUS_ICON = 1.
</SCWM/S_SP_A_HEAD_PRDP>-DOCNO = 1.
</SCWM/S_SP_A_HEAD_PRDP>-DOCTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_SP_A_HEAD_PRDP-DOCCAT, sy-vline,
  WA_/SCWM/S_SP_A_HEAD_PRDP-TEXTIND, sy-vline,
  WA_/SCWM/S_SP_A_HEAD_PRDP-BSKEY, sy-vline,
  WA_/SCWM/S_SP_A_HEAD_PRDP-VERSION, sy-vline,
  WA_/SCWM/S_SP_A_HEAD_PRDP-MANUAL, sy-vline,
  WA_/SCWM/S_SP_A_HEAD_PRDP-CHANGEABLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_SP_A_HEAD_PRDP 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_/SCWM/S_SP_A_HEAD_PRDP 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_/SCWM/S_SP_A_HEAD_PRDP INTO WA_/SCWM/S_SP_A_HEAD_PRDP.


*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 DOCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_SP_A_HEAD_PRDP-DOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_SP_A_HEAD_PRDP-DOCNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PROD_ORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_SP_A_HEAD_PRDP-PROD_ORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_SP_A_HEAD_PRDP-PROD_ORDER.
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_/SCWM/S_SP_A_HEAD_PRDP_STR, 
DOCID TYPE STRING,
CHANGEABLE_ICON TYPE STRING,
ERROR_STATUS_ICON TYPE STRING,
DOCNO TYPE STRING,
DOCTYPE TYPE STRING,
DOCCAT TYPE STRING,
TEXTIND TYPE STRING,
BSKEY TYPE STRING,
VERSION TYPE STRING,
MANUAL TYPE STRING,
CHANGEABLE TYPE STRING,
DOCCAT_TXT TYPE STRING,
DOCTYPE_TXT TYPE STRING,
LGNUM TYPE STRING,
/SCWM/NO_REFIND TYPE STRING,
/SCWM/PRODUCTION_INFO TYPE STRING,
/SCWM/PRODUCTION_INFO_NO_PROD TYPE STRING,
/SCWM/ITEMID_MAIN_PRODUCT TYPE STRING,
/SCWM/PRIORITY TYPE STRING,
CREDAT TYPE STRING,
CRETIM TYPE STRING,
CREUSR TYPE STRING,
CHGDAT TYPE STRING,
CHGTIM TYPE STRING,
CHGUSR TYPE STRING,
/SCDL/DLV_HEAD TYPE STRING,
PROD_ORDER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_SP_A_HEAD_PRDP_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_/SCWM/S_SP_A_HEAD_PRDP_STR-DOCID sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-CHANGEABLE_ICON sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-ERROR_STATUS_ICON sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-DOCNO sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-DOCTYPE sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-DOCCAT sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-TEXTIND sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-BSKEY sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-VERSION sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-MANUAL sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-CHANGEABLE sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-DOCCAT_TXT sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-DOCTYPE_TXT sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-LGNUM sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-/SCWM/NO_REFIND sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-/SCWM/PRODUCTION_INFO sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-/SCWM/PRODUCTION_INFO_NO_PROD sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-/SCWM/ITEMID_MAIN_PRODUCT sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-/SCWM/PRIORITY sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-CREDAT sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-CRETIM sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-CREUSR sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-CHGDAT sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-CHGTIM sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-CHGUSR sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-/SCDL/DLV_HEAD sy-vline 
WA_/SCWM/S_SP_A_HEAD_PRDP_STR-PROD_ORDER sy-vline      INTO ld_text SEPARATED BY SPACE.

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