ABAP Select data from SAP table WISO_BILLHD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WISO_BILLHD 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_BILLHD. 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_BILLHD 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_BILLHD TYPE STANDARD TABLE OF WISO_BILLHD,
      WA_WISO_BILLHD TYPE WISO_BILLHD,
      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_BILLHD> TYPE WISO_BILLHD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WISO_BILLHD
*  INTO TABLE @DATA(IT_WISO_BILLHD2).
*--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_BILLHD INDEX 1 INTO DATA(WA_WISO_BILLHD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WISO_BILLHD>-BILL_DOC = 1.
<WISO_BILLHD>-BILL_TYPE = 1.
<WISO_BILLHD>-BILL_TYPE_DESCR = 1.
<WISO_BILLHD>-PAYER = 1.
<WISO_BILLHD>-CR_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WISO_BILLHD-PRICE_SUM, sy-vline,
  WA_WISO_BILLHD-NETVAL_SUM, sy-vline,
  WA_WISO_BILLHD-TAX_SUM, sy-vline,
  WA_WISO_BILLHD-CURR, sy-vline,
  WA_WISO_BILLHD-PRICE_SUM1, sy-vline,
  WA_WISO_BILLHD-NETVAL_SUM1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WISO_BILLHD 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_BILLHD 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_BILLHD INTO WA_WISO_BILLHD.


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

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

*Conversion exit ALPHA, internal->external for field CANCELLED_DOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISO_BILLHD-CANCELLED_DOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISO_BILLHD-CANCELLED_DOC.
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_BILLHD_STR, 
BILL_DOC TYPE STRING,
BILL_TYPE TYPE STRING,
BILL_TYPE_DESCR TYPE STRING,
PAYER TYPE STRING,
CR_DATE TYPE STRING,
PRICE_SUM TYPE STRING,
NETVAL_SUM TYPE STRING,
TAX_SUM TYPE STRING,
CURR TYPE STRING,
PRICE_SUM1 TYPE STRING,
NETVAL_SUM1 TYPE STRING,
TAX_SUM1 TYPE STRING,
CURR1 TYPE STRING,
DOC_NUMB_SO TYPE STRING,
INCO1 TYPE STRING,
INCO1_DESCR TYPE STRING,
INCO2 TYPE STRING,
PMNTTRMS TYPE STRING,
PMNTTRMS_DESCR TYPE STRING,
SALESORG TYPE STRING,
DISTR_CHAN TYPE STRING,
DIVISION TYPE STRING,
SHIP_COND TYPE STRING,
SD_DOC_CAT TYPE STRING,
CANCELLED TYPE STRING,
CANCELLED_DOC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WISO_BILLHD_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_BILLHD_STR-BILL_DOC sy-vline 
WA_WISO_BILLHD_STR-BILL_TYPE sy-vline 
WA_WISO_BILLHD_STR-BILL_TYPE_DESCR sy-vline 
WA_WISO_BILLHD_STR-PAYER sy-vline 
WA_WISO_BILLHD_STR-CR_DATE sy-vline 
WA_WISO_BILLHD_STR-PRICE_SUM sy-vline 
WA_WISO_BILLHD_STR-NETVAL_SUM sy-vline 
WA_WISO_BILLHD_STR-TAX_SUM sy-vline 
WA_WISO_BILLHD_STR-CURR sy-vline 
WA_WISO_BILLHD_STR-PRICE_SUM1 sy-vline 
WA_WISO_BILLHD_STR-NETVAL_SUM1 sy-vline 
WA_WISO_BILLHD_STR-TAX_SUM1 sy-vline 
WA_WISO_BILLHD_STR-CURR1 sy-vline 
WA_WISO_BILLHD_STR-DOC_NUMB_SO sy-vline 
WA_WISO_BILLHD_STR-INCO1 sy-vline 
WA_WISO_BILLHD_STR-INCO1_DESCR sy-vline 
WA_WISO_BILLHD_STR-INCO2 sy-vline 
WA_WISO_BILLHD_STR-PMNTTRMS sy-vline 
WA_WISO_BILLHD_STR-PMNTTRMS_DESCR sy-vline 
WA_WISO_BILLHD_STR-SALESORG sy-vline 
WA_WISO_BILLHD_STR-DISTR_CHAN sy-vline 
WA_WISO_BILLHD_STR-DIVISION sy-vline 
WA_WISO_BILLHD_STR-SHIP_COND sy-vline 
WA_WISO_BILLHD_STR-SD_DOC_CAT sy-vline 
WA_WISO_BILLHD_STR-CANCELLED sy-vline 
WA_WISO_BILLHD_STR-CANCELLED_DOC sy-vline      INTO ld_text SEPARATED BY SPACE.

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