ABAP Select data from SAP table FKKEPOSP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKEPOSP
*  INTO TABLE @DATA(IT_FKKEPOSP2).
*--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_FKKEPOSP INDEX 1 INTO DATA(WA_FKKEPOSP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKEPOSP>-GPART = 1.
<FKKEPOSP>-BUKRS = 1.
<FKKEPOSP>-VKONT = 1.
<FKKEPOSP>-VTREF = 1.
<FKKEPOSP>-RATPL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKEPOSP-SAMMR, sy-vline,
  WA_FKKEPOSP-XAWOP, sy-vline,
  WA_FKKEPOSP-XAWAP, sy-vline,
  WA_FKKEPOSP-ANDPA, sy-vline,
  WA_FKKEPOSP-VARNR, sy-vline,
  WA_FKKEPOSP-SUVAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKEPOSP 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_FKKEPOSP 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_FKKEPOSP INTO WA_FKKEPOSP.


*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_FKKEPOSP-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKEPOSP-GPART.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field SAMMR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKEPOSP-SAMMR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKEPOSP-SAMMR.
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_FKKEPOSP_STR, 
GPART TYPE STRING,
BUKRS TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
RATPL TYPE STRING,
SAMMR TYPE STRING,
XAWOP TYPE STRING,
XAWAP TYPE STRING,
ANDPA TYPE STRING,
VARNR TYPE STRING,
SUVAR TYPE STRING,
SRVAR TYPE STRING,
STSUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKEPOSP_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_FKKEPOSP_STR-GPART sy-vline 
WA_FKKEPOSP_STR-BUKRS sy-vline 
WA_FKKEPOSP_STR-VKONT sy-vline 
WA_FKKEPOSP_STR-VTREF sy-vline 
WA_FKKEPOSP_STR-RATPL sy-vline 
WA_FKKEPOSP_STR-SAMMR sy-vline 
WA_FKKEPOSP_STR-XAWOP sy-vline 
WA_FKKEPOSP_STR-XAWAP sy-vline 
WA_FKKEPOSP_STR-ANDPA sy-vline 
WA_FKKEPOSP_STR-VARNR sy-vline 
WA_FKKEPOSP_STR-SUVAR sy-vline 
WA_FKKEPOSP_STR-SRVAR sy-vline 
WA_FKKEPOSP_STR-STSUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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