ABAP Select data from SAP table FKKOP_RED into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKOP_RED
*  INTO TABLE @DATA(IT_FKKOP_RED2).
*--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_FKKOP_RED INDEX 1 INTO DATA(WA_FKKOP_RED2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKOP_RED>-OPBEL = 1.
<FKKOP_RED>-OPUPW = 1.
<FKKOP_RED>-OPUPK = 1.
<FKKOP_RED>-OPUPZ = 1.
<FKKOP_RED>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKOP_RED-GPART, sy-vline,
  WA_FKKOP_RED-VKONT, sy-vline,
  WA_FKKOP_RED-VTREF, sy-vline,
  WA_FKKOP_RED-SUBAP, sy-vline,
  WA_FKKOP_RED-ABWBL, sy-vline,
  WA_FKKOP_RED-ABWTP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKOP_RED 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_FKKOP_RED 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_FKKOP_RED INTO WA_FKKOP_RED.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKOP_RED-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKOP_RED-AUGBL.
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_FKKOP_RED_STR, 
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
BUKRS TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
SUBAP TYPE STRING,
ABWBL TYPE STRING,
ABWTP TYPE STRING,
WAERS TYPE STRING,
BETRW TYPE STRING,
FAEDN TYPE STRING,
FAEDS TYPE STRING,
STUDT TYPE STRING,
SKTPZ TYPE STRING,
ORUPZ TYPE STRING,
AUGST TYPE STRING,
AUGDT TYPE STRING,
AUGBL TYPE STRING,
AUGBD TYPE STRING,
AUGRD TYPE STRING,
AUGWA TYPE STRING,
AUGBT TYPE STRING,
AUGSK TYPE STRING,
AUGVD TYPE STRING,
AUGOB TYPE STRING,
APPLK TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
MWSKZ TYPE STRING,
XANZA TYPE STRING,
STAKZ TYPE STRING,
ASTKZ TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
PERSL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKOP_RED_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_FKKOP_RED_STR-OPBEL sy-vline 
WA_FKKOP_RED_STR-OPUPW sy-vline 
WA_FKKOP_RED_STR-OPUPK sy-vline 
WA_FKKOP_RED_STR-OPUPZ sy-vline 
WA_FKKOP_RED_STR-BUKRS sy-vline 
WA_FKKOP_RED_STR-GPART sy-vline 
WA_FKKOP_RED_STR-VKONT sy-vline 
WA_FKKOP_RED_STR-VTREF sy-vline 
WA_FKKOP_RED_STR-SUBAP sy-vline 
WA_FKKOP_RED_STR-ABWBL sy-vline 
WA_FKKOP_RED_STR-ABWTP sy-vline 
WA_FKKOP_RED_STR-WAERS sy-vline 
WA_FKKOP_RED_STR-BETRW sy-vline 
WA_FKKOP_RED_STR-FAEDN sy-vline 
WA_FKKOP_RED_STR-FAEDS sy-vline 
WA_FKKOP_RED_STR-STUDT sy-vline 
WA_FKKOP_RED_STR-SKTPZ sy-vline 
WA_FKKOP_RED_STR-ORUPZ sy-vline 
WA_FKKOP_RED_STR-AUGST sy-vline 
WA_FKKOP_RED_STR-AUGDT sy-vline 
WA_FKKOP_RED_STR-AUGBL sy-vline 
WA_FKKOP_RED_STR-AUGBD sy-vline 
WA_FKKOP_RED_STR-AUGRD sy-vline 
WA_FKKOP_RED_STR-AUGWA sy-vline 
WA_FKKOP_RED_STR-AUGBT sy-vline 
WA_FKKOP_RED_STR-AUGSK sy-vline 
WA_FKKOP_RED_STR-AUGVD sy-vline 
WA_FKKOP_RED_STR-AUGOB sy-vline 
WA_FKKOP_RED_STR-APPLK sy-vline 
WA_FKKOP_RED_STR-HVORG sy-vline 
WA_FKKOP_RED_STR-TVORG sy-vline 
WA_FKKOP_RED_STR-MWSKZ sy-vline 
WA_FKKOP_RED_STR-XANZA sy-vline 
WA_FKKOP_RED_STR-STAKZ sy-vline 
WA_FKKOP_RED_STR-ASTKZ sy-vline 
WA_FKKOP_RED_STR-BLDAT sy-vline 
WA_FKKOP_RED_STR-BUDAT sy-vline 
WA_FKKOP_RED_STR-PERSL sy-vline      INTO ld_text SEPARATED BY SPACE.

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