ABAP Select data from SAP table DIWPS_ORDER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DIWPS_ORDER
*  INTO TABLE @DATA(IT_DIWPS_ORDER2).
*--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_DIWPS_ORDER INDEX 1 INTO DATA(WA_DIWPS_ORDER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DIWPS_ORDER>-NOTIFID = 1.
<DIWPS_ORDER>-AUFNR = 1.
<DIWPS_ORDER>-QMEL_ORDER_FLG = 1.
<DIWPS_ORDER>-ORDER_STATUS_FLG = 1.
<DIWPS_ORDER>-QMART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DIWPS_ORDER-KTEXT, sy-vline,
  WA_DIWPS_ORDER-POS_INDIC, sy-vline,
  WA_DIWPS_ORDER-PLNTY, sy-vline,
  WA_DIWPS_ORDER-PLNNR, sy-vline,
  WA_DIWPS_ORDER-PLNAL, sy-vline,
  WA_DIWPS_ORDER-ZAEHL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DIWPS_ORDER 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_DIWPS_ORDER 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_DIWPS_ORDER INTO WA_DIWPS_ORDER.


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

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DIWPS_ORDER-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIWPS_ORDER-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DIWPS_ORDER-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIWPS_ORDER-PLNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DIWPS_ORDER-PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIWPS_ORDER-PLNAL.
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_DIWPS_ORDER_STR, 
NOTIFID TYPE STRING,
AUFNR TYPE STRING,
QMEL_ORDER_FLG TYPE STRING,
ORDER_STATUS_FLG TYPE STRING,
QMART TYPE STRING,
KTEXT TYPE STRING,
POS_INDIC TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
ZAEHL TYPE STRING,
AUFNR_SUCCESS TYPE STRING,
AUFNR_NO_SUCCESS TYPE STRING,
OLD_AUFNR_DELE TYPE STRING,
DB_UPDATE TYPE STRING,
TL_HIER_ERROR TYPE STRING,
QMEL_ORDER_ERROR TYPE STRING,
ORDER_EXISTS TYPE STRING,
T350_ERROR TYPE STRING,
HELP_FLAG_1 TYPE STRING,
HELP_FLAG_2 TYPE STRING,
HELP_FLAG_3 TYPE STRING,
HELP_FLAG_4 TYPE STRING,
HELP_FLAG_5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DIWPS_ORDER_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_DIWPS_ORDER_STR-NOTIFID sy-vline 
WA_DIWPS_ORDER_STR-AUFNR sy-vline 
WA_DIWPS_ORDER_STR-QMEL_ORDER_FLG sy-vline 
WA_DIWPS_ORDER_STR-ORDER_STATUS_FLG sy-vline 
WA_DIWPS_ORDER_STR-QMART sy-vline 
WA_DIWPS_ORDER_STR-KTEXT sy-vline 
WA_DIWPS_ORDER_STR-POS_INDIC sy-vline 
WA_DIWPS_ORDER_STR-PLNTY sy-vline 
WA_DIWPS_ORDER_STR-PLNNR sy-vline 
WA_DIWPS_ORDER_STR-PLNAL sy-vline 
WA_DIWPS_ORDER_STR-ZAEHL sy-vline 
WA_DIWPS_ORDER_STR-AUFNR_SUCCESS sy-vline 
WA_DIWPS_ORDER_STR-AUFNR_NO_SUCCESS sy-vline 
WA_DIWPS_ORDER_STR-OLD_AUFNR_DELE sy-vline 
WA_DIWPS_ORDER_STR-DB_UPDATE sy-vline 
WA_DIWPS_ORDER_STR-TL_HIER_ERROR sy-vline 
WA_DIWPS_ORDER_STR-QMEL_ORDER_ERROR sy-vline 
WA_DIWPS_ORDER_STR-ORDER_EXISTS sy-vline 
WA_DIWPS_ORDER_STR-T350_ERROR sy-vline 
WA_DIWPS_ORDER_STR-HELP_FLAG_1 sy-vline 
WA_DIWPS_ORDER_STR-HELP_FLAG_2 sy-vline 
WA_DIWPS_ORDER_STR-HELP_FLAG_3 sy-vline 
WA_DIWPS_ORDER_STR-HELP_FLAG_4 sy-vline 
WA_DIWPS_ORDER_STR-HELP_FLAG_5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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