ABAP Select data from SAP table FKKBIBILLACC_HH_DISP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKBIBILLACC_HH_DISP
*  INTO TABLE @DATA(IT_FKKBIBILLACC_HH_DISP2).
*--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_FKKBIBILLACC_HH_DISP INDEX 1 INTO DATA(WA_FKKBIBILLACC_HH_DISP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKBIBILLACC_HH_DISP>-MANDT = 1.
<FKKBIBILLACC_HH_DISP>-BILLACCOUNT = 1.
<FKKBIBILLACC_HH_DISP>-HISTHEAD = 1.
<FKKBIBILLACC_HH_DISP>-TS_FROM = 1.
<FKKBIBILLACC_HH_DISP>-TS_TO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKBIBILLACC_HH_DISP-BILLRATECAT, sy-vline,
  WA_FKKBIBILLACC_HH_DISP-BILLCYCLE, sy-vline,
  WA_FKKBIBILLACC_HH_DISP-BILLGROUP, sy-vline,
  WA_FKKBIBILLACC_HH_DISP-DATEFROM, sy-vline,
  WA_FKKBIBILLACC_HH_DISP-TIMEFROM, sy-vline,
  WA_FKKBIBILLACC_HH_DISP-DATETO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKBIBILLACC_HH_DISP 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_FKKBIBILLACC_HH_DISP 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_FKKBIBILLACC_HH_DISP INTO WA_FKKBIBILLACC_HH_DISP.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FKKBIBILLACC_HH_DISP_STR, 
MANDT TYPE STRING,
BILLACCOUNT TYPE STRING,
HISTHEAD TYPE STRING,
TS_FROM TYPE STRING,
TS_TO TYPE STRING,
BILLRATECAT TYPE STRING,
BILLCYCLE TYPE STRING,
BILLGROUP TYPE STRING,
DATEFROM TYPE STRING,
TIMEFROM TYPE STRING,
DATETO TYPE STRING,
TIMETO TYPE STRING,
STARTDATE TYPE STRING,
PERLENGTH TYPE STRING,
PERCAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKBIBILLACC_HH_DISP_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_FKKBIBILLACC_HH_DISP_STR-MANDT sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-BILLACCOUNT sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-HISTHEAD sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-TS_FROM sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-TS_TO sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-BILLRATECAT sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-BILLCYCLE sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-BILLGROUP sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-DATEFROM sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-TIMEFROM sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-DATETO sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-TIMETO sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-STARTDATE sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-PERLENGTH sy-vline 
WA_FKKBIBILLACC_HH_DISP_STR-PERCAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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