ABAP Select data from SAP table BIW_ISU_BILL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BIW_ISU_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 BIW_ISU_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 BIW_ISU_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_BIW_ISU_BILL TYPE STANDARD TABLE OF BIW_ISU_BILL,
      WA_BIW_ISU_BILL TYPE BIW_ISU_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: <BIW_ISU_BILL> TYPE BIW_ISU_BILL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BIW_ISU_BILL
*  INTO TABLE @DATA(IT_BIW_ISU_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_BIW_ISU_BILL INDEX 1 INTO DATA(WA_BIW_ISU_BILL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BIW_ISU_BILL>-BUKRS = 1.
<BIW_ISU_BILL>-SPARTE = 1.
<BIW_ISU_BILL>-EIGENVERBR = 1.
<BIW_ISU_BILL>-PORTION = 1.
<BIW_ISU_BILL>-TARIFTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BIW_ISU_BILL-AKLASSE, sy-vline,
  WA_BIW_ISU_BILL-KOFIZ, sy-vline,
  WA_BIW_ISU_BILL-ABRVORG, sy-vline,
  WA_BIW_ISU_BILL-MANOUTSORT, sy-vline,
  WA_BIW_ISU_BILL-VALIDATION, sy-vline,
  WA_BIW_ISU_BILL-ACTORID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BIW_ISU_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_BIW_ISU_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_BIW_ISU_BILL INTO WA_BIW_ISU_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 ALPHA, internal->external for field CITY_CODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BIW_ISU_BILL-CITY_CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_BILL-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_BILL-CITYP_CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_BILL-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_BILL-STREETCODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_ISU_BILL-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_BILL_STR, 
BUKRS TYPE STRING,
SPARTE TYPE STRING,
EIGENVERBR TYPE STRING,
PORTION TYPE STRING,
TARIFTYP TYPE STRING,
AKLASSE TYPE STRING,
KOFIZ TYPE STRING,
ABRVORG TYPE STRING,
MANOUTSORT TYPE STRING,
VALIDATION TYPE STRING,
ACTORID 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_REL TYPE STRING,
ERDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BIW_ISU_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_BIW_ISU_BILL_STR-BUKRS sy-vline 
WA_BIW_ISU_BILL_STR-SPARTE sy-vline 
WA_BIW_ISU_BILL_STR-EIGENVERBR sy-vline 
WA_BIW_ISU_BILL_STR-PORTION sy-vline 
WA_BIW_ISU_BILL_STR-TARIFTYP sy-vline 
WA_BIW_ISU_BILL_STR-AKLASSE sy-vline 
WA_BIW_ISU_BILL_STR-KOFIZ sy-vline 
WA_BIW_ISU_BILL_STR-ABRVORG sy-vline 
WA_BIW_ISU_BILL_STR-MANOUTSORT sy-vline 
WA_BIW_ISU_BILL_STR-VALIDATION sy-vline 
WA_BIW_ISU_BILL_STR-ACTORID sy-vline 
WA_BIW_ISU_BILL_STR-CITY_CODE sy-vline 
WA_BIW_ISU_BILL_STR-CITYP_CODE sy-vline 
WA_BIW_ISU_BILL_STR-STREETCODE sy-vline 
WA_BIW_ISU_BILL_STR-COUNTRY sy-vline 
WA_BIW_ISU_BILL_STR-REGION sy-vline 
WA_BIW_ISU_BILL_STR-REGPOLIT sy-vline 
WA_BIW_ISU_BILL_STR-ANZ_CRE sy-vline 
WA_BIW_ISU_BILL_STR-ANZ_DEB sy-vline 
WA_BIW_ISU_BILL_STR-ANZ_REV sy-vline 
WA_BIW_ISU_BILL_STR-ANZ_REL sy-vline 
WA_BIW_ISU_BILL_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.