ABAP Select data from SAP table FKK_PAY_HEADER into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_PAY_HEADER
*  INTO TABLE @DATA(IT_FKK_PAY_HEADER2).
*--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_FKK_PAY_HEADER INDEX 1 INTO DATA(WA_FKK_PAY_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_PAY_HEADER>-GPART = 1.
<FKK_PAY_HEADER>-VKONT = 1.
<FKK_PAY_HEADER>-VTREF = 1.
<FKK_PAY_HEADER>-APPLK = 1.
<FKK_PAY_HEADER>-SUBAP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_PAY_HEADER-BUKRS, sy-vline,
  WA_FKK_PAY_HEADER-BNKID, sy-vline,
  WA_FKK_PAY_HEADER-CRDID, sy-vline,
  WA_FKK_PAY_HEADER-ANKEY, sy-vline,
  WA_FKK_PAY_HEADER-VALTO, sy-vline,
  WA_FKK_PAY_HEADER-PYMET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_PAY_HEADER 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_FKK_PAY_HEADER 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_FKK_PAY_HEADER INTO WA_FKK_PAY_HEADER.


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

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

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_PAY_HEADER-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_PAY_HEADER-VTREF.
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_FKK_PAY_HEADER_STR, 
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
APPLK TYPE STRING,
SUBAP TYPE STRING,
BUKRS TYPE STRING,
BNKID TYPE STRING,
CRDID TYPE STRING,
ANKEY TYPE STRING,
VALTO TYPE STRING,
PYMET TYPE STRING,
NEBTR TYPE STRING,
WAERS TYPE STRING,
CVVAL TYPE STRING,
CVVST TYPE STRING,
DSPAM TYPE STRING,
AUSFD TYPE STRING,
PYTXT TYPE STRING,
PDREF TYPE STRING,
PDKEY TYPE STRING,
ZLSCH TYPE STRING,
CFUNC TYPE STRING,
MNDID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_PAY_HEADER_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_FKK_PAY_HEADER_STR-GPART sy-vline 
WA_FKK_PAY_HEADER_STR-VKONT sy-vline 
WA_FKK_PAY_HEADER_STR-VTREF sy-vline 
WA_FKK_PAY_HEADER_STR-APPLK sy-vline 
WA_FKK_PAY_HEADER_STR-SUBAP sy-vline 
WA_FKK_PAY_HEADER_STR-BUKRS sy-vline 
WA_FKK_PAY_HEADER_STR-BNKID sy-vline 
WA_FKK_PAY_HEADER_STR-CRDID sy-vline 
WA_FKK_PAY_HEADER_STR-ANKEY sy-vline 
WA_FKK_PAY_HEADER_STR-VALTO sy-vline 
WA_FKK_PAY_HEADER_STR-PYMET sy-vline 
WA_FKK_PAY_HEADER_STR-NEBTR sy-vline 
WA_FKK_PAY_HEADER_STR-WAERS sy-vline 
WA_FKK_PAY_HEADER_STR-CVVAL sy-vline 
WA_FKK_PAY_HEADER_STR-CVVST sy-vline 
WA_FKK_PAY_HEADER_STR-DSPAM sy-vline 
WA_FKK_PAY_HEADER_STR-AUSFD sy-vline 
WA_FKK_PAY_HEADER_STR-PYTXT sy-vline 
WA_FKK_PAY_HEADER_STR-PDREF sy-vline 
WA_FKK_PAY_HEADER_STR-PDKEY sy-vline 
WA_FKK_PAY_HEADER_STR-ZLSCH sy-vline 
WA_FKK_PAY_HEADER_STR-CFUNC sy-vline 
WA_FKK_PAY_HEADER_STR-MNDID sy-vline      INTO ld_text SEPARATED BY SPACE.

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