ABAP Select data from SAP table WISO_DLVHD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WISO_DLVHD
*  INTO TABLE @DATA(IT_WISO_DLVHD2).
*--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_WISO_DLVHD INDEX 1 INTO DATA(WA_WISO_DLVHD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WISO_DLVHD>-DELIV_NUMB = 1.
<WISO_DLVHD>-DLV_TYPE = 1.
<WISO_DLVHD>-DLV_TYPE_DESCR = 1.
<WISO_DLVHD>-CR_DATE = 1.
<WISO_DLVHD>-PRICE_SUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WISO_DLVHD-NETVAL_SUM, sy-vline,
  WA_WISO_DLVHD-CURR, sy-vline,
  WA_WISO_DLVHD-PRICE_SUM1, sy-vline,
  WA_WISO_DLVHD-NETVAL_SUM1, sy-vline,
  WA_WISO_DLVHD-CURR1, sy-vline,
  WA_WISO_DLVHD-DOC_NUMB_SO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WISO_DLVHD 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_WISO_DLVHD 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_WISO_DLVHD INTO WA_WISO_DLVHD.


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

*Conversion exit ALPHA, internal->external for field DOC_NUMB_SO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISO_DLVHD-DOC_NUMB_SO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISO_DLVHD-DOC_NUMB_SO.
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_WISO_DLVHD_STR, 
DELIV_NUMB TYPE STRING,
DLV_TYPE TYPE STRING,
DLV_TYPE_DESCR TYPE STRING,
CR_DATE TYPE STRING,
PRICE_SUM TYPE STRING,
NETVAL_SUM TYPE STRING,
CURR TYPE STRING,
PRICE_SUM1 TYPE STRING,
NETVAL_SUM1 TYPE STRING,
CURR1 TYPE STRING,
DOC_NUMB_SO TYPE STRING,
DLV_CLLCT TYPE STRING,
BILL_BLOCK TYPE STRING,
PRC_STAT_H TYPE STRING,
TOTGOODSMV TYPE STRING,
BILLSTATUS TYPE STRING,
SD_DOC_CAT TYPE STRING,
SHIP_COND TYPE STRING,
SHIP_COND_DESCR TYPE STRING,
SHIP_POINT TYPE STRING,
SHIP_POINT_DESCR TYPE STRING,
NUMBER_ITEMS TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_BY_NAME TYPE STRING,
ST_DSCR_DISPLAY TYPE STRING,
TAX_SUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WISO_DLVHD_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_WISO_DLVHD_STR-DELIV_NUMB sy-vline 
WA_WISO_DLVHD_STR-DLV_TYPE sy-vline 
WA_WISO_DLVHD_STR-DLV_TYPE_DESCR sy-vline 
WA_WISO_DLVHD_STR-CR_DATE sy-vline 
WA_WISO_DLVHD_STR-PRICE_SUM sy-vline 
WA_WISO_DLVHD_STR-NETVAL_SUM sy-vline 
WA_WISO_DLVHD_STR-CURR sy-vline 
WA_WISO_DLVHD_STR-PRICE_SUM1 sy-vline 
WA_WISO_DLVHD_STR-NETVAL_SUM1 sy-vline 
WA_WISO_DLVHD_STR-CURR1 sy-vline 
WA_WISO_DLVHD_STR-DOC_NUMB_SO sy-vline 
WA_WISO_DLVHD_STR-DLV_CLLCT sy-vline 
WA_WISO_DLVHD_STR-BILL_BLOCK sy-vline 
WA_WISO_DLVHD_STR-PRC_STAT_H sy-vline 
WA_WISO_DLVHD_STR-TOTGOODSMV sy-vline 
WA_WISO_DLVHD_STR-BILLSTATUS sy-vline 
WA_WISO_DLVHD_STR-SD_DOC_CAT sy-vline 
WA_WISO_DLVHD_STR-SHIP_COND sy-vline 
WA_WISO_DLVHD_STR-SHIP_COND_DESCR sy-vline 
WA_WISO_DLVHD_STR-SHIP_POINT sy-vline 
WA_WISO_DLVHD_STR-SHIP_POINT_DESCR sy-vline 
WA_WISO_DLVHD_STR-NUMBER_ITEMS sy-vline 
WA_WISO_DLVHD_STR-CREATED_BY sy-vline 
WA_WISO_DLVHD_STR-CREATED_BY_NAME sy-vline 
WA_WISO_DLVHD_STR-ST_DSCR_DISPLAY sy-vline 
WA_WISO_DLVHD_STR-TAX_SUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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