ABAP Select data from SAP table FKKZK_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKZK_ALV
*  INTO TABLE @DATA(IT_FKKZK_ALV2).
*--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_FKKZK_ALV INDEX 1 INTO DATA(WA_FKKZK_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKZK_ALV>-MARK = 1.
<FKKZK_ALV>-ICON = 1.
<FKKZK_ALV>-MANDT = 1.
<FKKZK_ALV>-KEYZ1 = 1.
<FKKZK_ALV>-KEYZ2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKZK_ALV-APPLK, sy-vline,
  WA_FKKZK_ALV-HERKF, sy-vline,
  WA_FKKZK_ALV-FIKEY, sy-vline,
  WA_FKKZK_ALV-BVRKO, sy-vline,
  WA_FKKZK_ALV-BUKRS, sy-vline,
  WA_FKKZK_ALV-GSBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKZK_ALV 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_FKKZK_ALV 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_FKKZK_ALV INTO WA_FKKZK_ALV.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field KUKEY_LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKZK_ALV-KUKEY_LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKZK_ALV-KUKEY_LOGSYS.
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_FKKZK_ALV_STR, 
MARK TYPE STRING,
ICON TYPE STRING,
MANDT TYPE STRING,
KEYZ1 TYPE STRING,
KEYZ2 TYPE STRING,
APPLK TYPE STRING,
HERKF TYPE STRING,
FIKEY TYPE STRING,
BVRKO TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
PRCTR TYPE STRING,
BLART TYPE STRING,
WAERS TYPE STRING,
KURSF TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
VALUT TYPE STRING,
XEIPH TYPE STRING,
AUGRD TYPE STRING,
SELT1 TYPE STRING,
SELT2 TYPE STRING,
SELT3 TYPE STRING,
ANZPO TYPE STRING,
SUMMS TYPE STRING,
SUMMH TYPE STRING,
SUMWA TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
MAXUP TYPE STRING,
MAXUV TYPE STRING,
STAZS TYPE STRING,
XSCHS TYPE STRING,
XPDCS TYPE STRING,
XCRDS TYPE STRING,
XZAUS TYPE STRING,
XRTPS TYPE STRING,
CCZAH TYPE STRING,
SUBEL TYPE STRING,
VKOCH TYPE STRING,
XEBOK TYPE STRING,
XPOSA TYPE STRING,
INFOF TYPE STRING,
KTSUS TYPE STRING,
KTSUH TYPE STRING,
KSUMP TYPE STRING,
XNSEB TYPE STRING,
JOBNAME TYPE STRING,
CHDSK TYPE STRING,
PAYTP TYPE STRING,
XAUTS TYPE STRING,
CVSCD TYPE STRING,
XEXPY TYPE STRING,
BUPLA TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
KUKEY TYPE STRING,
LTYPE TYPE STRING,
KUKEY_LOGSYS TYPE STRING,
STAKS TYPE STRING,
OFFIC TYPE STRING,
T_CELLTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKZK_ALV_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_FKKZK_ALV_STR-MARK sy-vline 
WA_FKKZK_ALV_STR-ICON sy-vline 
WA_FKKZK_ALV_STR-MANDT sy-vline 
WA_FKKZK_ALV_STR-KEYZ1 sy-vline 
WA_FKKZK_ALV_STR-KEYZ2 sy-vline 
WA_FKKZK_ALV_STR-APPLK sy-vline 
WA_FKKZK_ALV_STR-HERKF sy-vline 
WA_FKKZK_ALV_STR-FIKEY sy-vline 
WA_FKKZK_ALV_STR-BVRKO sy-vline 
WA_FKKZK_ALV_STR-BUKRS sy-vline 
WA_FKKZK_ALV_STR-GSBER sy-vline 
WA_FKKZK_ALV_STR-PRCTR sy-vline 
WA_FKKZK_ALV_STR-BLART sy-vline 
WA_FKKZK_ALV_STR-WAERS sy-vline 
WA_FKKZK_ALV_STR-KURSF sy-vline 
WA_FKKZK_ALV_STR-BUDAT sy-vline 
WA_FKKZK_ALV_STR-BLDAT sy-vline 
WA_FKKZK_ALV_STR-VALUT sy-vline 
WA_FKKZK_ALV_STR-XEIPH sy-vline 
WA_FKKZK_ALV_STR-AUGRD sy-vline 
WA_FKKZK_ALV_STR-SELT1 sy-vline 
WA_FKKZK_ALV_STR-SELT2 sy-vline 
WA_FKKZK_ALV_STR-SELT3 sy-vline 
WA_FKKZK_ALV_STR-ANZPO sy-vline 
WA_FKKZK_ALV_STR-SUMMS sy-vline 
WA_FKKZK_ALV_STR-SUMMH sy-vline 
WA_FKKZK_ALV_STR-SUMWA sy-vline 
WA_FKKZK_ALV_STR-ERNAM sy-vline 
WA_FKKZK_ALV_STR-ERDAT sy-vline 
WA_FKKZK_ALV_STR-ERTIM sy-vline 
WA_FKKZK_ALV_STR-AENAM sy-vline 
WA_FKKZK_ALV_STR-AEDAT sy-vline 
WA_FKKZK_ALV_STR-AETIM sy-vline 
WA_FKKZK_ALV_STR-MAXUP sy-vline 
WA_FKKZK_ALV_STR-MAXUV sy-vline 
WA_FKKZK_ALV_STR-STAZS sy-vline 
WA_FKKZK_ALV_STR-XSCHS sy-vline 
WA_FKKZK_ALV_STR-XPDCS sy-vline 
WA_FKKZK_ALV_STR-XCRDS sy-vline 
WA_FKKZK_ALV_STR-XZAUS sy-vline 
WA_FKKZK_ALV_STR-XRTPS sy-vline 
WA_FKKZK_ALV_STR-CCZAH sy-vline 
WA_FKKZK_ALV_STR-SUBEL sy-vline 
WA_FKKZK_ALV_STR-VKOCH sy-vline 
WA_FKKZK_ALV_STR-XEBOK sy-vline 
WA_FKKZK_ALV_STR-XPOSA sy-vline 
WA_FKKZK_ALV_STR-INFOF sy-vline 
WA_FKKZK_ALV_STR-KTSUS sy-vline 
WA_FKKZK_ALV_STR-KTSUH sy-vline 
WA_FKKZK_ALV_STR-KSUMP sy-vline 
WA_FKKZK_ALV_STR-XNSEB sy-vline 
WA_FKKZK_ALV_STR-JOBNAME sy-vline 
WA_FKKZK_ALV_STR-CHDSK sy-vline 
WA_FKKZK_ALV_STR-PAYTP sy-vline 
WA_FKKZK_ALV_STR-XAUTS sy-vline 
WA_FKKZK_ALV_STR-CVSCD sy-vline 
WA_FKKZK_ALV_STR-XEXPY sy-vline 
WA_FKKZK_ALV_STR-BUPLA sy-vline 
WA_FKKZK_ALV_STR-HBKID sy-vline 
WA_FKKZK_ALV_STR-HKTID sy-vline 
WA_FKKZK_ALV_STR-KUKEY sy-vline 
WA_FKKZK_ALV_STR-LTYPE sy-vline 
WA_FKKZK_ALV_STR-KUKEY_LOGSYS sy-vline 
WA_FKKZK_ALV_STR-STAKS sy-vline 
WA_FKKZK_ALV_STR-OFFIC sy-vline 
WA_FKKZK_ALV_STR-T_CELLTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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