ABAP Select data from SAP table FKKINV_KO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKINV_KO
*  INTO TABLE @DATA(IT_FKKINV_KO2).
*--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_FKKINV_KO INDEX 1 INTO DATA(WA_FKKINV_KO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKINV_KO>-MANDT = 1.
<FKKINV_KO>-OPBEL = 1.
<FKKINV_KO>-FIKEY = 1.
<FKKINV_KO>-APPLK = 1.
<FKKINV_KO>-BLART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKINV_KO-HERKF, sy-vline,
  WA_FKKINV_KO-ERNAM, sy-vline,
  WA_FKKINV_KO-CPUDT, sy-vline,
  WA_FKKINV_KO-CPUTM, sy-vline,
  WA_FKKINV_KO-WAERS, sy-vline,
  WA_FKKINV_KO-BLDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKINV_KO 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_FKKINV_KO 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_FKKINV_KO INTO WA_FKKINV_KO.


*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_FKKINV_KO-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINV_KO-OPBEL.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_FKKINV_KO-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINV_KO-KURSF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field TAX_KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_FKKINV_KO-TAX_KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINV_KO-TAX_KURSF.
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_FKKINV_KO_STR, 
MANDT TYPE STRING,
OPBEL TYPE STRING,
FIKEY TYPE STRING,
APPLK TYPE STRING,
BLART TYPE STRING,
HERKF TYPE STRING,
ERNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
WAERS TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
WWERT TYPE STRING,
XBLNR TYPE STRING,
RLGRD TYPE STRING,
ABGRD TYPE STRING,
XEIBH TYPE STRING,
XBWER TYPE STRING,
AWTYP TYPE STRING,
AWKEY TYPE STRING,
STBEL TYPE STRING,
STMET TYPE STRING,
BLTYP TYPE STRING,
AGINF TYPE STRING,
STBUK TYPE STRING,
STORB TYPE STRING,
APPDX TYPE STRING,
XMBEL TYPE STRING,
AWSYS TYPE STRING,
VERSN TYPE STRING,
BRANCH TYPE STRING,
C4EYE TYPE STRING,
C4EYP TYPE STRING,
TATYP TYPE STRING,
HBBLA TYPE STRING,
XCSHA TYPE STRING,
PRTID TYPE STRING,
UTLOC TYPE STRING,
XTXCH TYPE STRING,
VATDATE TYPE STRING,
FULFILLDATE TYPE STRING,
XDOCA TYPE STRING,
WNPER TYPE STRING,
XSING TYPE STRING,
KEYPP TYPE STRING,
_DATAAGING TYPE STRING,
XDAAG TYPE STRING,
TRSLA TYPE STRING,
KURSF TYPE STRING,
TAX_KURSF TYPE STRING,
FKKDOC_GROUP TYPE STRING,
ICO_BUKRS_REQ TYPE STRING,
ICO_BUKRS_SUP TYPE STRING,
ICO_TYPE TYPE STRING,
ICO_PROC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKINV_KO_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_FKKINV_KO_STR-MANDT sy-vline 
WA_FKKINV_KO_STR-OPBEL sy-vline 
WA_FKKINV_KO_STR-FIKEY sy-vline 
WA_FKKINV_KO_STR-APPLK sy-vline 
WA_FKKINV_KO_STR-BLART sy-vline 
WA_FKKINV_KO_STR-HERKF sy-vline 
WA_FKKINV_KO_STR-ERNAM sy-vline 
WA_FKKINV_KO_STR-CPUDT sy-vline 
WA_FKKINV_KO_STR-CPUTM sy-vline 
WA_FKKINV_KO_STR-WAERS sy-vline 
WA_FKKINV_KO_STR-BLDAT sy-vline 
WA_FKKINV_KO_STR-BUDAT sy-vline 
WA_FKKINV_KO_STR-WWERT sy-vline 
WA_FKKINV_KO_STR-XBLNR sy-vline 
WA_FKKINV_KO_STR-RLGRD sy-vline 
WA_FKKINV_KO_STR-ABGRD sy-vline 
WA_FKKINV_KO_STR-XEIBH sy-vline 
WA_FKKINV_KO_STR-XBWER sy-vline 
WA_FKKINV_KO_STR-AWTYP sy-vline 
WA_FKKINV_KO_STR-AWKEY sy-vline 
WA_FKKINV_KO_STR-STBEL sy-vline 
WA_FKKINV_KO_STR-STMET sy-vline 
WA_FKKINV_KO_STR-BLTYP sy-vline 
WA_FKKINV_KO_STR-AGINF sy-vline 
WA_FKKINV_KO_STR-STBUK sy-vline 
WA_FKKINV_KO_STR-STORB sy-vline 
WA_FKKINV_KO_STR-APPDX sy-vline 
WA_FKKINV_KO_STR-XMBEL sy-vline 
WA_FKKINV_KO_STR-AWSYS sy-vline 
WA_FKKINV_KO_STR-VERSN sy-vline 
WA_FKKINV_KO_STR-BRANCH sy-vline 
WA_FKKINV_KO_STR-C4EYE sy-vline 
WA_FKKINV_KO_STR-C4EYP sy-vline 
WA_FKKINV_KO_STR-TATYP sy-vline 
WA_FKKINV_KO_STR-HBBLA sy-vline 
WA_FKKINV_KO_STR-XCSHA sy-vline 
WA_FKKINV_KO_STR-PRTID sy-vline 
WA_FKKINV_KO_STR-UTLOC sy-vline 
WA_FKKINV_KO_STR-XTXCH sy-vline 
WA_FKKINV_KO_STR-VATDATE sy-vline 
WA_FKKINV_KO_STR-FULFILLDATE sy-vline 
WA_FKKINV_KO_STR-XDOCA sy-vline 
WA_FKKINV_KO_STR-WNPER sy-vline 
WA_FKKINV_KO_STR-XSING sy-vline 
WA_FKKINV_KO_STR-KEYPP sy-vline 
WA_FKKINV_KO_STR-_DATAAGING sy-vline 
WA_FKKINV_KO_STR-XDAAG sy-vline 
WA_FKKINV_KO_STR-TRSLA sy-vline 
WA_FKKINV_KO_STR-KURSF sy-vline 
WA_FKKINV_KO_STR-TAX_KURSF sy-vline 
WA_FKKINV_KO_STR-FKKDOC_GROUP sy-vline 
WA_FKKINV_KO_STR-ICO_BUKRS_REQ sy-vline 
WA_FKKINV_KO_STR-ICO_BUKRS_SUP sy-vline 
WA_FKKINV_KO_STR-ICO_TYPE sy-vline 
WA_FKKINV_KO_STR-ICO_PROC sy-vline      INTO ld_text SEPARATED BY SPACE.

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