ABAP Select data from SAP table ISUWA_BILL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISUWA_BILL
*  INTO TABLE @DATA(IT_ISUWA_BILL2).
*--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_ISUWA_BILL INDEX 1 INTO DATA(WA_ISUWA_BILL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISUWA_BILL>-EWABILLTAB = 1.
<ISUWA_BILL>-T_EWABILL = 1.
<ISUWA_BILL>-DB_T_EWABILL = 1.
<ISUWA_BILL>-EWABILLD = 1.
<ISUWA_BILL>-BILLTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISUWA_BILL-CONT_COUNT, sy-vline,
  WA_ISUWA_BILL-BEH_TYPE, sy-vline,
  WA_ISUWA_BILL-DIFFCULT, sy-vline,
  WA_ISUWA_BILL-FREQUENZ, sy-vline,
  WA_ISUWA_BILL-WASTE_TYPE, sy-vline,
  WA_ISUWA_BILL-KOMPFAKT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISUWA_BILL 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_ISUWA_BILL 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_ISUWA_BILL INTO WA_ISUWA_BILL.


*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 MATN1, internal->external for field BEH_TYPE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ISUWA_BILL-BEH_TYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISUWA_BILL-BEH_TYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field WASTE_TYPE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ISUWA_BILL-WASTE_TYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISUWA_BILL-WASTE_TYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field WASTE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ISUWA_BILL-WASTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISUWA_BILL-WASTE.
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_ISUWA_BILL_STR, 
EWABILLTAB TYPE STRING,
T_EWABILL TYPE STRING,
DB_T_EWABILL TYPE STRING,
EWABILLD TYPE STRING,
BILLTYPE TYPE STRING,
CONT_COUNT TYPE STRING,
BEH_TYPE TYPE STRING,
DIFFCULT TYPE STRING,
FREQUENZ TYPE STRING,
WASTE_TYPE TYPE STRING,
KOMPFAKT TYPE STRING,
NO_UNITIES TYPE STRING,
ANZPERS TYPE STRING,
WINTERLEVEL TYPE STRING,
ROBTYP TYPE STRING,
REMENG TYPE STRING,
FLAECHE TYPE STRING,
WEEKLY TYPE STRING,
MONTH_COUNT TYPE STRING,
DAY_TYPE TYPE STRING,
BEH_ANZAHL_RM TYPE STRING,
WASTE_WEIGHT TYPE STRING,
WASTE TYPE STRING,
WASTE_VOL TYPE STRING,
CONFTYPE TYPE STRING,
ABRMENGE TYPE STRING,
RATEDVAL TYPE STRING,
DAY_FREQUENCY TYPE STRING,
LAUFNR TYPE STRING,
FREQZUS TYPE STRING,
REGNAME TYPE STRING,
REGIOGROUP TYPE STRING,
STYPETXT TYPE STRING,
KONDIGR TYPE STRING,
CONTR TYPE STRING,
WMODE TYPE STRING,
OPEN_WMODE TYPE STRING,
UPD_ONLINE TYPE STRING,
NO_DIALOG TYPE STRING,
NUM_RANGE TYPE STRING,
NO_CHANGE TYPE STRING,
NO_OTHER TYPE STRING,
NO_EVENT TYPE STRING,
NO_STATISTIC TYPE STRING,
NO_CHANGE_DOC TYPE STRING,
CALLED_BY_IDOC TYPE STRING,
PROPRICE TYPE STRING,
INPERR TYPE STRING,
ENQ_DONE TYPE STRING,
CURFIELD TYPE STRING,
CURLINE TYPE STRING,
CURDYNNR TYPE STRING,
SETCURFIELD TYPE STRING,
SETCURLINE TYPE STRING,
SETCURDYNNR TYPE STRING,
TEXT_CHANGED TYPE STRING,
EXTINTKZ TYPE STRING,
EXIT_TYPE TYPE STRING,
FULLSCREEN TYPE STRING,
SAVE_OKCODE TYPE STRING,
TEILOBJ TYPE STRING,
S_FUBA TYPE STRING,
INPUT_FIELD_OFF TYPE STRING,
NOFULLSCREEN TYPE STRING,
DB_UPDATE TYPE STRING,
CHANGEFLAG TYPE STRING,
WA_ADR_DONE TYPE STRING,
OPEN_DONE TYPE STRING,
IS_CHANGED TYPE STRING,
EBILLTYPE TYPE STRING,
T_BILLTYPEZ TYPE STRING,
MSG TYPE STRING,
MSGID TYPE STRING,
MSGTY TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
IEMSG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISUWA_BILL_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_ISUWA_BILL_STR-EWABILLTAB sy-vline 
WA_ISUWA_BILL_STR-T_EWABILL sy-vline 
WA_ISUWA_BILL_STR-DB_T_EWABILL sy-vline 
WA_ISUWA_BILL_STR-EWABILLD sy-vline 
WA_ISUWA_BILL_STR-BILLTYPE sy-vline 
WA_ISUWA_BILL_STR-CONT_COUNT sy-vline 
WA_ISUWA_BILL_STR-BEH_TYPE sy-vline 
WA_ISUWA_BILL_STR-DIFFCULT sy-vline 
WA_ISUWA_BILL_STR-FREQUENZ sy-vline 
WA_ISUWA_BILL_STR-WASTE_TYPE sy-vline 
WA_ISUWA_BILL_STR-KOMPFAKT sy-vline 
WA_ISUWA_BILL_STR-NO_UNITIES sy-vline 
WA_ISUWA_BILL_STR-ANZPERS sy-vline 
WA_ISUWA_BILL_STR-WINTERLEVEL sy-vline 
WA_ISUWA_BILL_STR-ROBTYP sy-vline 
WA_ISUWA_BILL_STR-REMENG sy-vline 
WA_ISUWA_BILL_STR-FLAECHE sy-vline 
WA_ISUWA_BILL_STR-WEEKLY sy-vline 
WA_ISUWA_BILL_STR-MONTH_COUNT sy-vline 
WA_ISUWA_BILL_STR-DAY_TYPE sy-vline 
WA_ISUWA_BILL_STR-BEH_ANZAHL_RM sy-vline 
WA_ISUWA_BILL_STR-WASTE_WEIGHT sy-vline 
WA_ISUWA_BILL_STR-WASTE sy-vline 
WA_ISUWA_BILL_STR-WASTE_VOL sy-vline 
WA_ISUWA_BILL_STR-CONFTYPE sy-vline 
WA_ISUWA_BILL_STR-ABRMENGE sy-vline 
WA_ISUWA_BILL_STR-RATEDVAL sy-vline 
WA_ISUWA_BILL_STR-DAY_FREQUENCY sy-vline 
WA_ISUWA_BILL_STR-LAUFNR sy-vline 
WA_ISUWA_BILL_STR-FREQZUS sy-vline 
WA_ISUWA_BILL_STR-REGNAME sy-vline 
WA_ISUWA_BILL_STR-REGIOGROUP sy-vline 
WA_ISUWA_BILL_STR-STYPETXT sy-vline 
WA_ISUWA_BILL_STR-KONDIGR sy-vline 
WA_ISUWA_BILL_STR-CONTR sy-vline 
WA_ISUWA_BILL_STR-WMODE sy-vline 
WA_ISUWA_BILL_STR-OPEN_WMODE sy-vline 
WA_ISUWA_BILL_STR-UPD_ONLINE sy-vline 
WA_ISUWA_BILL_STR-NO_DIALOG sy-vline 
WA_ISUWA_BILL_STR-NUM_RANGE sy-vline 
WA_ISUWA_BILL_STR-NO_CHANGE sy-vline 
WA_ISUWA_BILL_STR-NO_OTHER sy-vline 
WA_ISUWA_BILL_STR-NO_EVENT sy-vline 
WA_ISUWA_BILL_STR-NO_STATISTIC sy-vline 
WA_ISUWA_BILL_STR-NO_CHANGE_DOC sy-vline 
WA_ISUWA_BILL_STR-CALLED_BY_IDOC sy-vline 
WA_ISUWA_BILL_STR-PROPRICE sy-vline 
WA_ISUWA_BILL_STR-INPERR sy-vline 
WA_ISUWA_BILL_STR-ENQ_DONE sy-vline 
WA_ISUWA_BILL_STR-CURFIELD sy-vline 
WA_ISUWA_BILL_STR-CURLINE sy-vline 
WA_ISUWA_BILL_STR-CURDYNNR sy-vline 
WA_ISUWA_BILL_STR-SETCURFIELD sy-vline 
WA_ISUWA_BILL_STR-SETCURLINE sy-vline 
WA_ISUWA_BILL_STR-SETCURDYNNR sy-vline 
WA_ISUWA_BILL_STR-TEXT_CHANGED sy-vline 
WA_ISUWA_BILL_STR-EXTINTKZ sy-vline 
WA_ISUWA_BILL_STR-EXIT_TYPE sy-vline 
WA_ISUWA_BILL_STR-FULLSCREEN sy-vline 
WA_ISUWA_BILL_STR-SAVE_OKCODE sy-vline 
WA_ISUWA_BILL_STR-TEILOBJ sy-vline 
WA_ISUWA_BILL_STR-S_FUBA sy-vline 
WA_ISUWA_BILL_STR-INPUT_FIELD_OFF sy-vline 
WA_ISUWA_BILL_STR-NOFULLSCREEN sy-vline 
WA_ISUWA_BILL_STR-DB_UPDATE sy-vline 
WA_ISUWA_BILL_STR-CHANGEFLAG sy-vline 
WA_ISUWA_BILL_STR-WA_ADR_DONE sy-vline 
WA_ISUWA_BILL_STR-OPEN_DONE sy-vline 
WA_ISUWA_BILL_STR-IS_CHANGED sy-vline 
WA_ISUWA_BILL_STR-EBILLTYPE sy-vline 
WA_ISUWA_BILL_STR-T_BILLTYPEZ sy-vline 
WA_ISUWA_BILL_STR-MSG sy-vline 
WA_ISUWA_BILL_STR-MSGID sy-vline 
WA_ISUWA_BILL_STR-MSGTY sy-vline 
WA_ISUWA_BILL_STR-MSGNO sy-vline 
WA_ISUWA_BILL_STR-MSGV1 sy-vline 
WA_ISUWA_BILL_STR-MSGV2 sy-vline 
WA_ISUWA_BILL_STR-MSGV3 sy-vline 
WA_ISUWA_BILL_STR-MSGV4 sy-vline 
WA_ISUWA_BILL_STR-IEMSG sy-vline      INTO ld_text SEPARATED BY SPACE.

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