ABAP Select data from SAP table FKK100POST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKK100POST 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 FKK100POST. 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 FKK100POST 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_FKK100POST TYPE STANDARD TABLE OF FKK100POST,
      WA_FKK100POST TYPE FKK100POST,
      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: <FKK100POST> TYPE FKK100POST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FKK100POST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FKK100POST
  INTO TABLE IT_FKK100POST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK100POST
*  INTO TABLE @DATA(IT_FKK100POST2).
*--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_FKK100POST INDEX 1 INTO DATA(WA_FKK100POST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FKK100POST ASSIGNING <FKK100POST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK100POST>-BUKRS = 1.
<FKK100POST>-CURTP = 1.
<FKK100POST>-HWTYP = 1.
<FKK100POST>-WAERS = 1.
<FKK100POST>-HKONT = 1.

ENDLOOP.

LOOP AT IT_FKK100POST INTO WA_FKK100POST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK100POST-GSBER, sy-vline,
  WA_FKK100POST-SEGMENT, sy-vline,
  WA_FKK100POST-PRCTR, sy-vline,
  WA_FKK100POST-LDGRP, sy-vline,
  WA_FKK100POST-BUDAT, sy-vline,
  WA_FKK100POST-BLART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK100POST 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_FKK100POST 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_FKK100POST INTO WA_FKK100POST.


*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 HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK100POST-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK100POST-HKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK100POST-SEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK100POST-SEGMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK100POST-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK100POST-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KONTS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK100POST-KONTS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK100POST-KONTS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KONTH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK100POST-KONTH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK100POST-KONTH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK100POST-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK100POST-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEGMT_MIG_GUV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK100POST-SEGMT_MIG_GUV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK100POST-SEGMT_MIG_GUV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR_MIG_GUV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK100POST-PRCTR_MIG_GUV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK100POST-PRCTR_MIG_GUV.
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_FKK100POST_STR, 
BUKRS TYPE STRING,
CURTP TYPE STRING,
HWTYP TYPE STRING,
WAERS TYPE STRING,
HKONT TYPE STRING,
GSBER TYPE STRING,
SEGMENT TYPE STRING,
PRCTR TYPE STRING,
LDGRP TYPE STRING,
BUDAT TYPE STRING,
BLART TYPE STRING,
HWAER TYPE STRING,
BETRH TYPE STRING,
KONTS TYPE STRING,
KONTH TYPE STRING,
OPBEL TYPE STRING,
GSBER_MIG_GUV TYPE STRING,
SEGMT_MIG_GUV TYPE STRING,
PRCTR_MIG_GUV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK100POST_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_FKK100POST_STR-BUKRS sy-vline 
WA_FKK100POST_STR-CURTP sy-vline 
WA_FKK100POST_STR-HWTYP sy-vline 
WA_FKK100POST_STR-WAERS sy-vline 
WA_FKK100POST_STR-HKONT sy-vline 
WA_FKK100POST_STR-GSBER sy-vline 
WA_FKK100POST_STR-SEGMENT sy-vline 
WA_FKK100POST_STR-PRCTR sy-vline 
WA_FKK100POST_STR-LDGRP sy-vline 
WA_FKK100POST_STR-BUDAT sy-vline 
WA_FKK100POST_STR-BLART sy-vline 
WA_FKK100POST_STR-HWAER sy-vline 
WA_FKK100POST_STR-BETRH sy-vline 
WA_FKK100POST_STR-KONTS sy-vline 
WA_FKK100POST_STR-KONTH sy-vline 
WA_FKK100POST_STR-OPBEL sy-vline 
WA_FKK100POST_STR-GSBER_MIG_GUV sy-vline 
WA_FKK100POST_STR-SEGMT_MIG_GUV sy-vline 
WA_FKK100POST_STR-PRCTR_MIG_GUV sy-vline      INTO ld_text SEPARATED BY SPACE.

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