ABAP Select data from SAP table FKKZW301 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKKZW301 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 FKKZW301. 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 FKKZW301 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_FKKZW301 TYPE STANDARD TABLE OF FKKZW301,
      WA_FKKZW301 TYPE FKKZW301,
      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: <FKKZW301> TYPE FKKZW301.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FKKZW301.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FKKZW301
  INTO TABLE IT_FKKZW301.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKZW301
*  INTO TABLE @DATA(IT_FKKZW3012).
*--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_FKKZW301 INDEX 1 INTO DATA(WA_FKKZW3012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FKKZW301 ASSIGNING <FKKZW301>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKZW301>-MANDT = 1.
<FKKZW301>-OPBEL = 1.
<FKKZW301>-OPUPW = 1.
<FKKZW301>-OPUPK = 1.
<FKKZW301>-BWBER = 1.

ENDLOOP.

LOOP AT IT_FKKZW301 INTO WA_FKKZW301.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKZW301-BUKRS, sy-vline,
  WA_FKKZW301-GPART, sy-vline,
  WA_FKKZW301-VKONT, sy-vline,
  WA_FKKZW301-WAERS, sy-vline,
  WA_FKKZW301-OFFBT, sy-vline,
  WA_FKKZW301-BETRW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKZW301 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_FKKZW301 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_FKKZW301 INTO WA_FKKZW301.


*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_FKKZW301-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKZW301-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKZW301-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKZW301-GPART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKZW301-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKZW301-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WZKON
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKZW301-WZKON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKZW301-WZKON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WBAKO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKZW301-WBAKO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKZW301-WBAKO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WBKKO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKZW301-WBKKO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKZW301-WBKKO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WZKKO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKZW301-WZKKO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKZW301-WZKKO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WBEKO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKZW301-WBEKO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKZW301-WBEKO.
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_FKKZW301_STR, 
MANDT TYPE STRING,
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
BWBER TYPE STRING,
BUKRS TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
WAERS TYPE STRING,
OFFBT TYPE STRING,
BETRW TYPE STRING,
WBUBT TYPE STRING,
WBUDT TYPE STRING,
WBBT2 TYPE STRING,
WBBT3 TYPE STRING,
SBETH TYPE STRING,
SBETW TYPE STRING,
SBET2 TYPE STRING,
SBET3 TYPE STRING,
AWSTB TYPE STRING,
WZUBT TYPE STRING,
WZUDT TYPE STRING,
WZBT2 TYPE STRING,
WZBT3 TYPE STRING,
BUDAT TYPE STRING,
WFZBT TYPE STRING,
EWBBT TYPE STRING,
KENNZ TYPE STRING,
GRUND TYPE STRING,
PROZT TYPE STRING,
WBBTR TYPE STRING,
RGRND TYPE STRING,
REDAT TYPE STRING,
ERNAM TYPE STRING,
ECPDT TYPE STRING,
ECPTM TYPE STRING,
AENAM TYPE STRING,
ACPDT TYPE STRING,
ACPTM TYPE STRING,
FAEDN TYPE STRING,
WZKON TYPE STRING,
WBAKO TYPE STRING,
WBKKO TYPE STRING,
WZKKO TYPE STRING,
WBEKO TYPE STRING,
WCRDT TYPE STRING,
C4EYE TYPE STRING,
COLOGRP TYPE STRING,
ECL_RATE TYPE STRING,
INCRMNT TYPE STRING,
AGING TYPE STRING,
BWVAR TYPE STRING,
AMPEL TYPE STRING,
INFOZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKZW301_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_FKKZW301_STR-MANDT sy-vline 
WA_FKKZW301_STR-OPBEL sy-vline 
WA_FKKZW301_STR-OPUPW sy-vline 
WA_FKKZW301_STR-OPUPK sy-vline 
WA_FKKZW301_STR-BWBER sy-vline 
WA_FKKZW301_STR-BUKRS sy-vline 
WA_FKKZW301_STR-GPART sy-vline 
WA_FKKZW301_STR-VKONT sy-vline 
WA_FKKZW301_STR-WAERS sy-vline 
WA_FKKZW301_STR-OFFBT sy-vline 
WA_FKKZW301_STR-BETRW sy-vline 
WA_FKKZW301_STR-WBUBT sy-vline 
WA_FKKZW301_STR-WBUDT sy-vline 
WA_FKKZW301_STR-WBBT2 sy-vline 
WA_FKKZW301_STR-WBBT3 sy-vline 
WA_FKKZW301_STR-SBETH sy-vline 
WA_FKKZW301_STR-SBETW sy-vline 
WA_FKKZW301_STR-SBET2 sy-vline 
WA_FKKZW301_STR-SBET3 sy-vline 
WA_FKKZW301_STR-AWSTB sy-vline 
WA_FKKZW301_STR-WZUBT sy-vline 
WA_FKKZW301_STR-WZUDT sy-vline 
WA_FKKZW301_STR-WZBT2 sy-vline 
WA_FKKZW301_STR-WZBT3 sy-vline 
WA_FKKZW301_STR-BUDAT sy-vline 
WA_FKKZW301_STR-WFZBT sy-vline 
WA_FKKZW301_STR-EWBBT sy-vline 
WA_FKKZW301_STR-KENNZ sy-vline 
WA_FKKZW301_STR-GRUND sy-vline 
WA_FKKZW301_STR-PROZT sy-vline 
WA_FKKZW301_STR-WBBTR sy-vline 
WA_FKKZW301_STR-RGRND sy-vline 
WA_FKKZW301_STR-REDAT sy-vline 
WA_FKKZW301_STR-ERNAM sy-vline 
WA_FKKZW301_STR-ECPDT sy-vline 
WA_FKKZW301_STR-ECPTM sy-vline 
WA_FKKZW301_STR-AENAM sy-vline 
WA_FKKZW301_STR-ACPDT sy-vline 
WA_FKKZW301_STR-ACPTM sy-vline 
WA_FKKZW301_STR-FAEDN sy-vline 
WA_FKKZW301_STR-WZKON sy-vline 
WA_FKKZW301_STR-WBAKO sy-vline 
WA_FKKZW301_STR-WBKKO sy-vline 
WA_FKKZW301_STR-WZKKO sy-vline 
WA_FKKZW301_STR-WBEKO sy-vline 
WA_FKKZW301_STR-WCRDT sy-vline 
WA_FKKZW301_STR-C4EYE sy-vline 
WA_FKKZW301_STR-COLOGRP sy-vline 
WA_FKKZW301_STR-ECL_RATE sy-vline 
WA_FKKZW301_STR-INCRMNT sy-vline 
WA_FKKZW301_STR-AGING sy-vline 
WA_FKKZW301_STR-BWVAR sy-vline 
WA_FKKZW301_STR-AMPEL sy-vline 
WA_FKKZW301_STR-INFOZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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