ABAP Select data from SAP table BIW_ISU_INVOICE into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BIW_ISU_INVOICE
*  INTO TABLE @DATA(IT_BIW_ISU_INVOICE2).
*--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_BIW_ISU_INVOICE INDEX 1 INTO DATA(WA_BIW_ISU_INVOICE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BIW_ISU_INVOICE>-ACTORID = 1.
<BIW_ISU_INVOICE>-VKTYP = 1.
<BIW_ISU_INVOICE>-KTOKLASSE = 1.
<BIW_ISU_INVOICE>-ERGRD = 1.
<BIW_ISU_INVOICE>-VERART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BIW_ISU_INVOICE-VERTYP, sy-vline,
  WA_BIW_ISU_INVOICE-MANOUTSORT, sy-vline,
  WA_BIW_ISU_INVOICE-VALIDATION, sy-vline,
  WA_BIW_ISU_INVOICE-CITY_CODE, sy-vline,
  WA_BIW_ISU_INVOICE-CITYP_CODE, sy-vline,
  WA_BIW_ISU_INVOICE-STREETCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BIW_ISU_INVOICE 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_BIW_ISU_INVOICE 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_BIW_ISU_INVOICE INTO WA_BIW_ISU_INVOICE.


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

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

*Conversion exit ALPHA, internal->external for field STREETCODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BIW_ISU_INVOICE-STREETCODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_INVOICE-STREETCODE.
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_BIW_ISU_INVOICE_STR, 
ACTORID TYPE STRING,
VKTYP TYPE STRING,
KTOKLASSE TYPE STRING,
ERGRD TYPE STRING,
VERART TYPE STRING,
VERTYP TYPE STRING,
MANOUTSORT TYPE STRING,
VALIDATION TYPE STRING,
CITY_CODE TYPE STRING,
CITYP_CODE TYPE STRING,
STREETCODE TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
REGPOLIT TYPE STRING,
ANZ_CRE TYPE STRING,
ANZ_DEB TYPE STRING,
ANZ_REV TYPE STRING,
ANZ_OUT TYPE STRING,
ANZ_REL TYPE STRING,
ERDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BIW_ISU_INVOICE_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_BIW_ISU_INVOICE_STR-ACTORID sy-vline 
WA_BIW_ISU_INVOICE_STR-VKTYP sy-vline 
WA_BIW_ISU_INVOICE_STR-KTOKLASSE sy-vline 
WA_BIW_ISU_INVOICE_STR-ERGRD sy-vline 
WA_BIW_ISU_INVOICE_STR-VERART sy-vline 
WA_BIW_ISU_INVOICE_STR-VERTYP sy-vline 
WA_BIW_ISU_INVOICE_STR-MANOUTSORT sy-vline 
WA_BIW_ISU_INVOICE_STR-VALIDATION sy-vline 
WA_BIW_ISU_INVOICE_STR-CITY_CODE sy-vline 
WA_BIW_ISU_INVOICE_STR-CITYP_CODE sy-vline 
WA_BIW_ISU_INVOICE_STR-STREETCODE sy-vline 
WA_BIW_ISU_INVOICE_STR-COUNTRY sy-vline 
WA_BIW_ISU_INVOICE_STR-REGION sy-vline 
WA_BIW_ISU_INVOICE_STR-REGPOLIT sy-vline 
WA_BIW_ISU_INVOICE_STR-ANZ_CRE sy-vline 
WA_BIW_ISU_INVOICE_STR-ANZ_DEB sy-vline 
WA_BIW_ISU_INVOICE_STR-ANZ_REV sy-vline 
WA_BIW_ISU_INVOICE_STR-ANZ_OUT sy-vline 
WA_BIW_ISU_INVOICE_STR-ANZ_REL sy-vline 
WA_BIW_ISU_INVOICE_STR-ERDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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