ABAP Select data from SAP table FKKINV_BILL_ADJUST_INPUT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKINV_BILL_ADJUST_INPUT
*  INTO TABLE @DATA(IT_FKKINV_BILL_ADJUST_INPUT2).
*--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_FKKINV_BILL_ADJUST_INPUT INDEX 1 INTO DATA(WA_FKKINV_BILL_ADJUST_INPUT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKINV_BILL_ADJUST_INPUT>-ADJUSTED_REFDOCNO = 1.
<FKKINV_BILL_ADJUST_INPUT>-ADJUSTED_BILLDOCNO = 1.
<FKKINV_BILL_ADJUST_INPUT>-ADJUSTMENT_BILLDOC = 1.
<FKKINV_BILL_ADJUST_INPUT>-HEADER = 1.
<FKKINV_BILL_ADJUST_INPUT>-REFDOCNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKINV_BILL_ADJUST_INPUT-LOG_SYSTEM, sy-vline,
  WA_FKKINV_BILL_ADJUST_INPUT-APPLK, sy-vline,
  WA_FKKINV_BILL_ADJUST_INPUT-SRCPROCESS, sy-vline,
  WA_FKKINV_BILL_ADJUST_INPUT-DOCTYPE_BILL_EXT, sy-vline,
  WA_FKKINV_BILL_ADJUST_INPUT-GPART, sy-vline,
  WA_FKKINV_BILL_ADJUST_INPUT-VKONT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKINV_BILL_ADJUST_INPUT 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_FKKINV_BILL_ADJUST_INPUT 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_FKKINV_BILL_ADJUST_INPUT INTO WA_FKKINV_BILL_ADJUST_INPUT.


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

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

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKINV_BILL_ADJUST_INPUT-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINV_BILL_ADJUST_INPUT-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_FKKINV_BILL_ADJUST_INPUT_STR, 
ADJUSTED_REFDOCNO TYPE STRING,
ADJUSTED_BILLDOCNO TYPE STRING,
ADJUSTMENT_BILLDOC TYPE STRING,
HEADER TYPE STRING,
REFDOCNO TYPE STRING,
LOG_SYSTEM TYPE STRING,
APPLK TYPE STRING,
SRCPROCESS TYPE STRING,
DOCTYPE_BILL_EXT TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
DATE_FROM TYPE STRING,
DATE_TO TYPE STRING,
SIMULATED TYPE STRING,
BILL_CURR TYPE STRING,
INV_CURR TYPE STRING,
TAX_DET_TYPE TYPE STRING,
TAX_DATE_TYPE TYPE STRING,
SEPARATE_INV TYPE STRING,
INVOICE_FIRST TYPE STRING,
ADD_GROUP TYPE STRING,
INV_CATEGORY TYPE STRING,
ITEM_TAB TYPE STRING,
TAXITEM_TAB TYPE STRING,
ADDITEM_TAB TYPE STRING,
PAYITEM_TAB TYPE STRING,
EXTENSIONIN TYPE STRING,
PROCESSMODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKINV_BILL_ADJUST_INPUT_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_FKKINV_BILL_ADJUST_INPUT_STR-ADJUSTED_REFDOCNO sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-ADJUSTED_BILLDOCNO sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-ADJUSTMENT_BILLDOC sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-HEADER sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-REFDOCNO sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-LOG_SYSTEM sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-APPLK sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-SRCPROCESS sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-DOCTYPE_BILL_EXT sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-GPART sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-VKONT sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-DATE_FROM sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-DATE_TO sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-SIMULATED sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-BILL_CURR sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-INV_CURR sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-TAX_DET_TYPE sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-TAX_DATE_TYPE sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-SEPARATE_INV sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-INVOICE_FIRST sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-ADD_GROUP sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-INV_CATEGORY sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-ITEM_TAB sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-TAXITEM_TAB sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-ADDITEM_TAB sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-PAYITEM_TAB sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-EXTENSIONIN sy-vline 
WA_FKKINV_BILL_ADJUST_INPUT_STR-PROCESSMODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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