ABAP Select data from SAP table ISU_BI_BILL_S_DOC_ITEM_XDF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_BI_BILL_S_DOC_ITEM_XDF
*  INTO TABLE @DATA(IT_ISU_BI_BILL_S_DOC_ITEM_XDF2).
*--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_ISU_BI_BILL_S_DOC_ITEM_XDF INDEX 1 INTO DATA(WA_ISU_BI_BILL_S_DOC_ITEM_XDF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_BI_BILL_S_DOC_ITEM_XDF>-OPBEL = 1.
<ISU_BI_BILL_S_DOC_ITEM_XDF>-BELZEILE = 1.
<ISU_BI_BILL_S_DOC_ITEM_XDF>-BELZART = 1.
<ISU_BI_BILL_S_DOC_ITEM_XDF>-BELZART_TXT = 1.
<ISU_BI_BILL_S_DOC_ITEM_XDF>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_BI_BILL_S_DOC_ITEM_XDF-BUTXT, sy-vline,
  WA_ISU_BI_BILL_S_DOC_ITEM_XDF-STPRZ, sy-vline,
  WA_ISU_BI_BILL_S_DOC_ITEM_XDF-SBASW, sy-vline,
  WA_ISU_BI_BILL_S_DOC_ITEM_XDF-SBETW, sy-vline,
  WA_ISU_BI_BILL_S_DOC_ITEM_XDF-BETRW, sy-vline,
  WA_ISU_BI_BILL_S_DOC_ITEM_XDF-AUGBW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_BI_BILL_S_DOC_ITEM_XDF 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_ISU_BI_BILL_S_DOC_ITEM_XDF 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_ISU_BI_BILL_S_DOC_ITEM_XDF INTO WA_ISU_BI_BILL_S_DOC_ITEM_XDF.


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

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

*Conversion exit CUNIT, internal->external for field MASSBILL
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISU_BI_BILL_S_DOC_ITEM_XDF-MASSBILL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_BI_BILL_S_DOC_ITEM_XDF-MASSBILL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field GERAET
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_ISU_BI_BILL_S_DOC_ITEM_XDF-GERAET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_BI_BILL_S_DOC_ITEM_XDF-GERAET.
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_ISU_BI_BILL_S_DOC_ITEM_XDF_STR, 
OPBEL TYPE STRING,
BELZEILE TYPE STRING,
BELZART TYPE STRING,
BELZART_TXT TYPE STRING,
BUKRS TYPE STRING,
BUTXT TYPE STRING,
STPRZ TYPE STRING,
SBASW TYPE STRING,
SBETW TYPE STRING,
BETRW TYPE STRING,
AUGBW TYPE STRING,
MWSKZ TYPE STRING,
NETTOBTR TYPE STRING,
TWAERS TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
VORG_TXT TYPE STRING,
VERTRAG TYPE STRING,
VBEZ TYPE STRING,
EINZDAT TYPE STRING,
SPARTE TYPE STRING,
SPARTE_TXT TYPE STRING,
AB TYPE STRING,
BIS TYPE STRING,
MASSBILL TYPE STRING,
GERAET TYPE STRING,
ABLESGR TYPE STRING,
ABLESGR_TXT TYPE STRING,
ISTABLART TYPE STRING,
ISTABLART_TXT TYPE STRING,
I_ZWSTAND TYPE STRING,
I_ZWSTVOR TYPE STRING,
I_ABRMENGE TYPE STRING,
T_IDE_TEXT_I TYPE STRING,
T_CONVERSION TYPE STRING,
T_DISCOUNT_I TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_BI_BILL_S_DOC_ITEM_XDF_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_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-OPBEL sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-BELZEILE sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-BELZART sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-BELZART_TXT sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-BUKRS sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-BUTXT sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-STPRZ sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-SBASW sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-SBETW sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-BETRW sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-AUGBW sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-MWSKZ sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-NETTOBTR sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-TWAERS sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-HVORG sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-TVORG sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-VORG_TXT sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-VERTRAG sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-VBEZ sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-EINZDAT sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-SPARTE sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-SPARTE_TXT sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-AB sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-BIS sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-MASSBILL sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-GERAET sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-ABLESGR sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-ABLESGR_TXT sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-ISTABLART sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-ISTABLART_TXT sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-I_ZWSTAND sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-I_ZWSTVOR sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-I_ABRMENGE sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-T_IDE_TEXT_I sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-T_CONVERSION sy-vline 
WA_ISU_BI_BILL_S_DOC_ITEM_XDF_STR-T_DISCOUNT_I sy-vline      INTO ld_text SEPARATED BY SPACE.

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