ABAP Select data from SAP table FKKID_VAT_HDR_A into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKID_VAT_HDR_A
*  INTO TABLE @DATA(IT_FKKID_VAT_HDR_A2).
*--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_FKKID_VAT_HDR_A INDEX 1 INTO DATA(WA_FKKID_VAT_HDR_A2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKID_VAT_HDR_A>-MANDT = 1.
<FKKID_VAT_HDR_A>-OPBEL = 1.
<FKKID_VAT_HDR_A>-MAX_SEQNR = 1.
<FKKID_VAT_HDR_A>-PROCESS = 1.
<FKKID_VAT_HDR_A>-STATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKID_VAT_HDR_A-GPART, sy-vline,
  WA_FKKID_VAT_HDR_A-VKONT, sy-vline,
  WA_FKKID_VAT_HDR_A-BETRW, sy-vline,
  WA_FKKID_VAT_HDR_A-WAERS, sy-vline,
  WA_FKKID_VAT_HDR_A-XBLNR, sy-vline,
  WA_FKKID_VAT_HDR_A-AENAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKID_VAT_HDR_A 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_FKKID_VAT_HDR_A 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_FKKID_VAT_HDR_A INTO WA_FKKID_VAT_HDR_A.


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

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

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

*Conversion exit ALPHA, internal->external for field XBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKID_VAT_HDR_A-XBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKID_VAT_HDR_A-XBLNR.
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_FKKID_VAT_HDR_A_STR, 
MANDT TYPE STRING,
OPBEL TYPE STRING,
MAX_SEQNR TYPE STRING,
PROCESS TYPE STRING,
STATUS TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
BETRW TYPE STRING,
WAERS TYPE STRING,
XBLNR TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKID_VAT_HDR_A_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_FKKID_VAT_HDR_A_STR-MANDT sy-vline 
WA_FKKID_VAT_HDR_A_STR-OPBEL sy-vline 
WA_FKKID_VAT_HDR_A_STR-MAX_SEQNR sy-vline 
WA_FKKID_VAT_HDR_A_STR-PROCESS sy-vline 
WA_FKKID_VAT_HDR_A_STR-STATUS sy-vline 
WA_FKKID_VAT_HDR_A_STR-GPART sy-vline 
WA_FKKID_VAT_HDR_A_STR-VKONT sy-vline 
WA_FKKID_VAT_HDR_A_STR-BETRW sy-vline 
WA_FKKID_VAT_HDR_A_STR-WAERS sy-vline 
WA_FKKID_VAT_HDR_A_STR-XBLNR sy-vline 
WA_FKKID_VAT_HDR_A_STR-AENAM sy-vline 
WA_FKKID_VAT_HDR_A_STR-AEDAT sy-vline 
WA_FKKID_VAT_HDR_A_STR-AETIM sy-vline      INTO ld_text SEPARATED BY SPACE.

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