ABAP Select data from SAP table KKAE_STEUERUNG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KKAE_STEUERUNG
*  INTO TABLE @DATA(IT_KKAE_STEUERUNG2).
*--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_KKAE_STEUERUNG INDEX 1 INTO DATA(WA_KKAE_STEUERUNG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KKAE_STEUERUNG>-PERIODE = 1.
<KKAE_STEUERUNG>-GJAHR = 1.
<KKAE_STEUERUNG>-PERIO = 1.
<KKAE_STEUERUNG>-VERSION = 1.
<KKAE_STEUERUNG>-KOKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KKAE_STEUERUNG-RFCGRP, sy-vline,
  WA_KKAE_STEUERUNG-WAERS_ANZEIGE, sy-vline,
  WA_KKAE_STEUERUNG-ABGR_TYP, sy-vline,
  WA_KKAE_STEUERUNG-WAEHRS_OBJ_FORCE, sy-vline,
  WA_KKAE_STEUERUNG-ERGEBNIS_LISTE, sy-vline,
  WA_KKAE_STEUERUNG-PROT_MIT_INFO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KKAE_STEUERUNG 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_KKAE_STEUERUNG 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_KKAE_STEUERUNG INTO WA_KKAE_STEUERUNG.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KKAE_STEUERUNG-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAE_STEUERUNG-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKAE_STEUERUNG-VERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAE_STEUERUNG-VERSION.
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_KKAE_STEUERUNG_STR, 
PERIODE TYPE STRING,
GJAHR TYPE STRING,
PERIO TYPE STRING,
VERSION TYPE STRING,
KOKRS TYPE STRING,
RFCGRP TYPE STRING,
WAERS_ANZEIGE TYPE STRING,
ABGR_TYP TYPE STRING,
WAEHRS_OBJ_FORCE TYPE STRING,
ERGEBNIS_LISTE TYPE STRING,
PROT_MIT_INFO TYPE STRING,
ALTER_ARBEITSVORRAT TYPE STRING,
MELDUNGEN_SICHERN TYPE STRING,
OHNE_0ZEILEN TYPE STRING,
VARIANT_ANZEIGE TYPE STRING,
OBJEKT_TYP TYPE STRING,
VERARBEITUNG TYPE STRING,
ZEITFIBU TYPE STRING,
ABGS_ANZEIGE TYPE STRING,
SCMA_ACTIVE TYPE STRING,
SCMA_WORKLISTS_ACTIVE TYPE STRING,
KASS_ACTIVE TYPE STRING,
REPID TYPE STRING,
TCODE TYPE STRING,
BG_REPID TYPE STRING,
WF_WITEM TYPE STRING,
WF_WLIST TYPE STRING,
WF_OKEY TYPE STRING,
SUPPRESS_PROG_IND TYPE STRING,
SUPPRESS_PROT_DISPLAY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KKAE_STEUERUNG_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_KKAE_STEUERUNG_STR-PERIODE sy-vline 
WA_KKAE_STEUERUNG_STR-GJAHR sy-vline 
WA_KKAE_STEUERUNG_STR-PERIO sy-vline 
WA_KKAE_STEUERUNG_STR-VERSION sy-vline 
WA_KKAE_STEUERUNG_STR-KOKRS sy-vline 
WA_KKAE_STEUERUNG_STR-RFCGRP sy-vline 
WA_KKAE_STEUERUNG_STR-WAERS_ANZEIGE sy-vline 
WA_KKAE_STEUERUNG_STR-ABGR_TYP sy-vline 
WA_KKAE_STEUERUNG_STR-WAEHRS_OBJ_FORCE sy-vline 
WA_KKAE_STEUERUNG_STR-ERGEBNIS_LISTE sy-vline 
WA_KKAE_STEUERUNG_STR-PROT_MIT_INFO sy-vline 
WA_KKAE_STEUERUNG_STR-ALTER_ARBEITSVORRAT sy-vline 
WA_KKAE_STEUERUNG_STR-MELDUNGEN_SICHERN sy-vline 
WA_KKAE_STEUERUNG_STR-OHNE_0ZEILEN sy-vline 
WA_KKAE_STEUERUNG_STR-VARIANT_ANZEIGE sy-vline 
WA_KKAE_STEUERUNG_STR-OBJEKT_TYP sy-vline 
WA_KKAE_STEUERUNG_STR-VERARBEITUNG sy-vline 
WA_KKAE_STEUERUNG_STR-ZEITFIBU sy-vline 
WA_KKAE_STEUERUNG_STR-ABGS_ANZEIGE sy-vline 
WA_KKAE_STEUERUNG_STR-SCMA_ACTIVE sy-vline 
WA_KKAE_STEUERUNG_STR-SCMA_WORKLISTS_ACTIVE sy-vline 
WA_KKAE_STEUERUNG_STR-KASS_ACTIVE sy-vline 
WA_KKAE_STEUERUNG_STR-REPID sy-vline 
WA_KKAE_STEUERUNG_STR-TCODE sy-vline 
WA_KKAE_STEUERUNG_STR-BG_REPID sy-vline 
WA_KKAE_STEUERUNG_STR-WF_WITEM sy-vline 
WA_KKAE_STEUERUNG_STR-WF_WLIST sy-vline 
WA_KKAE_STEUERUNG_STR-WF_OKEY sy-vline 
WA_KKAE_STEUERUNG_STR-SUPPRESS_PROG_IND sy-vline 
WA_KKAE_STEUERUNG_STR-SUPPRESS_PROT_DISPLAY sy-vline      INTO ld_text SEPARATED BY SPACE.

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