ABAP Select data from SAP table FKKINVBILL_I_ENH_PPACC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKINVBILL_I_ENH_PPACC
*  INTO TABLE @DATA(IT_FKKINVBILL_I_ENH_PPACC2).
*--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_FKKINVBILL_I_ENH_PPACC INDEX 1 INTO DATA(WA_FKKINVBILL_I_ENH_PPACC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKINVBILL_I_ENH_PPACC>-PPACC = 1.
<FKKINVBILL_I_ENH_PPACC>-XRVRF = 1.
<FKKINVBILL_I_ENH_PPACC>-PPRSN = 1.
<FKKINVBILL_I_ENH_PPACC>-PPBVO = 1.
<FKKINVBILL_I_ENH_PPACC>-CRDRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKINVBILL_I_ENH_PPACC-TUMTH, sy-vline,
  WA_FKKINVBILL_I_ENH_PPACC-TULOC, sy-vline,
  WA_FKKINVBILL_I_ENH_PPACC-PPDOC, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_FKKINVBILL_I_ENH_PPACC 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_FKKINVBILL_I_ENH_PPACC 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_FKKINVBILL_I_ENH_PPACC INTO WA_FKKINVBILL_I_ENH_PPACC.


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

*Conversion exit ALPHA, internal->external for field PPDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKINVBILL_I_ENH_PPACC-PPDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINVBILL_I_ENH_PPACC-PPDOC.
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_FKKINVBILL_I_ENH_PPACC_STR, 
PPACC TYPE STRING,
XRVRF TYPE STRING,
PPRSN TYPE STRING,
PPBVO TYPE STRING,
CRDRS TYPE STRING,
TUMTH TYPE STRING,
TULOC TYPE STRING,
PPDOC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKINVBILL_I_ENH_PPACC_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_FKKINVBILL_I_ENH_PPACC_STR-PPACC sy-vline 
WA_FKKINVBILL_I_ENH_PPACC_STR-XRVRF sy-vline 
WA_FKKINVBILL_I_ENH_PPACC_STR-PPRSN sy-vline 
WA_FKKINVBILL_I_ENH_PPACC_STR-PPBVO sy-vline 
WA_FKKINVBILL_I_ENH_PPACC_STR-CRDRS sy-vline 
WA_FKKINVBILL_I_ENH_PPACC_STR-TUMTH sy-vline 
WA_FKKINVBILL_I_ENH_PPACC_STR-TULOC sy-vline 
WA_FKKINVBILL_I_ENH_PPACC_STR-PPDOC sy-vline      INTO ld_text SEPARATED BY SPACE.

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