ABAP Select data from SAP table FKKBIX_BILLITEM_TX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKBIX_BILLITEM_TX
*  INTO TABLE @DATA(IT_FKKBIX_BILLITEM_TX2).
*--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_FKKBIX_BILLITEM_TX INDEX 1 INTO DATA(WA_FKKBIX_BILLITEM_TX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKBIX_BILLITEM_TX>-MANDT = 1.
<FKKBIX_BILLITEM_TX>-SRCTATYPE = 1.
<FKKBIX_BILLITEM_TX>-SRCTAID = 1.
<FKKBIX_BILLITEM_TX>-BITPACKUUID = 1.
<FKKBIX_BILLITEM_TX>-BITPACKCNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKBIX_BILLITEM_TX-BITCAT, sy-vline,
  WA_FKKBIX_BILLITEM_TX-BITSTATUS, sy-vline,
  WA_FKKBIX_BILLITEM_TX-VKONT, sy-vline,
  WA_FKKBIX_BILLITEM_TX-MWSKZ, sy-vline,
  WA_FKKBIX_BILLITEM_TX-STRKZ, sy-vline,
  WA_FKKBIX_BILLITEM_TX-TAX_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKBIX_BILLITEM_TX 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_FKKBIX_BILLITEM_TX 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_FKKBIX_BILLITEM_TX INTO WA_FKKBIX_BILLITEM_TX.


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

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKBIX_BILLITEM_TX-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKBIX_BILLITEM_TX-VKONT.
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_FKKBIX_BILLITEM_TX_STR, 
MANDT TYPE STRING,
SRCTATYPE TYPE STRING,
SRCTAID TYPE STRING,
BITPACKUUID TYPE STRING,
BITPACKCNO TYPE STRING,
BITCAT TYPE STRING,
BITSTATUS TYPE STRING,
VKONT TYPE STRING,
MWSKZ TYPE STRING,
STRKZ TYPE STRING,
TAX_DATE TYPE STRING,
TAX_BASE TYPE STRING,
TAX_PERC TYPE STRING,
TAX_AMOUNT TYPE STRING,
BIT_CURR TYPE STRING,
KTOSL TYPE STRING,
KSCHL TYPE STRING,
BITREF32 TYPE STRING,
TAX_GROUP TYPE STRING,
BITCRMODE TYPE STRING,
EXCHIST TYPE STRING,
CHHIST TYPE STRING,
EXCDATE TYPE STRING,
EXCTIME TYPE STRING,
EXCREASON TYPE STRING,
EXCUSNAM TYPE STRING,
BIT2_DBTAB TYPE STRING,
BIT_GRPNO TYPE STRING,
SRC_GROUP TYPE STRING,
BILL_STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKBIX_BILLITEM_TX_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_FKKBIX_BILLITEM_TX_STR-MANDT sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-SRCTATYPE sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-SRCTAID sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-BITPACKUUID sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-BITPACKCNO sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-BITCAT sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-BITSTATUS sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-VKONT sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-MWSKZ sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-STRKZ sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-TAX_DATE sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-TAX_BASE sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-TAX_PERC sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-TAX_AMOUNT sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-BIT_CURR sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-KTOSL sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-KSCHL sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-BITREF32 sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-TAX_GROUP sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-BITCRMODE sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-EXCHIST sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-CHHIST sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-EXCDATE sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-EXCTIME sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-EXCREASON sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-EXCUSNAM sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-BIT2_DBTAB sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-BIT_GRPNO sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-SRC_GROUP sy-vline 
WA_FKKBIX_BILLITEM_TX_STR-BILL_STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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