ABAP Select data from SAP table FKKZR_LIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKZR_LIST
*  INTO TABLE @DATA(IT_FKKZR_LIST2).
*--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_FKKZR_LIST INDEX 1 INTO DATA(WA_FKKZR_LIST2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKZR_LIST-GSBER, sy-vline,
  WA_FKKZR_LIST-GPART, sy-vline,
  WA_FKKZR_LIST-VKONT, sy-vline,
  WA_FKKZR_LIST-VTREF, sy-vline,
  WA_FKKZR_LIST-VTRE2, sy-vline,
  WA_FKKZR_LIST-HVORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKZR_LIST 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_FKKZR_LIST 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_FKKZR_LIST INTO WA_FKKZR_LIST.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field VTRE2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKZR_LIST-VTRE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKZR_LIST-VTRE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKZR_LIST-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKZR_LIST-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_FKKZR_LIST_STR, 
NRZAS TYPE STRING,
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
VTRE2 TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
KOFIZ TYPE STRING,
SPART TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
WAERS TYPE STRING,
FAEDN TYPE STRING,
FAEDS TYPE STRING,
STUDT TYPE STRING,
SKTPZ TYPE STRING,
BETRW TYPE STRING,
AUGDT TYPE STRING,
AUGBL TYPE STRING,
BLART TYPE STRING,
OBETW TYPE STRING,
CBETW TYPE STRING,
STAUG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKZR_LIST_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_FKKZR_LIST_STR-NRZAS sy-vline 
WA_FKKZR_LIST_STR-OPBEL sy-vline 
WA_FKKZR_LIST_STR-OPUPW sy-vline 
WA_FKKZR_LIST_STR-OPUPK sy-vline 
WA_FKKZR_LIST_STR-BUKRS sy-vline 
WA_FKKZR_LIST_STR-GSBER sy-vline 
WA_FKKZR_LIST_STR-GPART sy-vline 
WA_FKKZR_LIST_STR-VKONT sy-vline 
WA_FKKZR_LIST_STR-VTREF sy-vline 
WA_FKKZR_LIST_STR-VTRE2 sy-vline 
WA_FKKZR_LIST_STR-HVORG sy-vline 
WA_FKKZR_LIST_STR-TVORG sy-vline 
WA_FKKZR_LIST_STR-KOFIZ sy-vline 
WA_FKKZR_LIST_STR-SPART sy-vline 
WA_FKKZR_LIST_STR-BLDAT sy-vline 
WA_FKKZR_LIST_STR-BUDAT sy-vline 
WA_FKKZR_LIST_STR-WAERS sy-vline 
WA_FKKZR_LIST_STR-FAEDN sy-vline 
WA_FKKZR_LIST_STR-FAEDS sy-vline 
WA_FKKZR_LIST_STR-STUDT sy-vline 
WA_FKKZR_LIST_STR-SKTPZ sy-vline 
WA_FKKZR_LIST_STR-BETRW sy-vline 
WA_FKKZR_LIST_STR-AUGDT sy-vline 
WA_FKKZR_LIST_STR-AUGBL sy-vline 
WA_FKKZR_LIST_STR-BLART sy-vline 
WA_FKKZR_LIST_STR-OBETW sy-vline 
WA_FKKZR_LIST_STR-CBETW sy-vline 
WA_FKKZR_LIST_STR-STAUG sy-vline      INTO ld_text SEPARATED BY SPACE.

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