ABAP Select data from SAP table DFKKOPAA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKOPAA
*  INTO TABLE @DATA(IT_DFKKOPAA2).
*--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_DFKKOPAA INDEX 1 INTO DATA(WA_DFKKOPAA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKOPAA>-MANDT = 1.
<DFKKOPAA>-OPBEL = 1.
<DFKKOPAA>-OPUPK = 1.
<DFKKOPAA>-OPUPS = 1.
<DFKKOPAA>-BETRH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKOPAA-BETRW, sy-vline,
  WA_DFKKOPAA-BETR2, sy-vline,
  WA_DFKKOPAA-BETR3, sy-vline,
  WA_DFKKOPAA-SBASH, sy-vline,
  WA_DFKKOPAA-SBASW, sy-vline,
  WA_DFKKOPAA-BETRH_CL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKOPAA 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_DFKKOPAA 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_DFKKOPAA INTO WA_DFKKOPAA.


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

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

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

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_DFKKOPAA-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKOPAA-FIPEX.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field BUDGETYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_DFKKOPAA-BUDGETYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKOPAA-BUDGETYEAR.
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_DFKKOPAA_STR, 
MANDT TYPE STRING,
OPBEL TYPE STRING,
OPUPK TYPE STRING,
OPUPS TYPE STRING,
BETRH TYPE STRING,
BETRW TYPE STRING,
BETR2 TYPE STRING,
BETR3 TYPE STRING,
SBASH TYPE STRING,
SBASW TYPE STRING,
BETRH_CL TYPE STRING,
BETRW_CL TYPE STRING,
BETR2_CL TYPE STRING,
BETR3_CL TYPE STRING,
SBASH_CL TYPE STRING,
SBASW_CL TYPE STRING,
TXRID_LAST TYPE STRING,
TXRCR TYPE STRING,
GSBER TYPE STRING,
SEGMENT TYPE STRING,
PRCTR TYPE STRING,
ORIGFIKRS TYPE STRING,
FIPEX TYPE STRING,
FISTL TYPE STRING,
FONDS TYPE STRING,
FKBER TYPE STRING,
MEASURE TYPE STRING,
GRANT_NBR TYPE STRING,
BUDGETYEAR TYPE STRING,
BUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKOPAA_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_DFKKOPAA_STR-MANDT sy-vline 
WA_DFKKOPAA_STR-OPBEL sy-vline 
WA_DFKKOPAA_STR-OPUPK sy-vline 
WA_DFKKOPAA_STR-OPUPS sy-vline 
WA_DFKKOPAA_STR-BETRH sy-vline 
WA_DFKKOPAA_STR-BETRW sy-vline 
WA_DFKKOPAA_STR-BETR2 sy-vline 
WA_DFKKOPAA_STR-BETR3 sy-vline 
WA_DFKKOPAA_STR-SBASH sy-vline 
WA_DFKKOPAA_STR-SBASW sy-vline 
WA_DFKKOPAA_STR-BETRH_CL sy-vline 
WA_DFKKOPAA_STR-BETRW_CL sy-vline 
WA_DFKKOPAA_STR-BETR2_CL sy-vline 
WA_DFKKOPAA_STR-BETR3_CL sy-vline 
WA_DFKKOPAA_STR-SBASH_CL sy-vline 
WA_DFKKOPAA_STR-SBASW_CL sy-vline 
WA_DFKKOPAA_STR-TXRID_LAST sy-vline 
WA_DFKKOPAA_STR-TXRCR sy-vline 
WA_DFKKOPAA_STR-GSBER sy-vline 
WA_DFKKOPAA_STR-SEGMENT sy-vline 
WA_DFKKOPAA_STR-PRCTR sy-vline 
WA_DFKKOPAA_STR-ORIGFIKRS sy-vline 
WA_DFKKOPAA_STR-FIPEX sy-vline 
WA_DFKKOPAA_STR-FISTL sy-vline 
WA_DFKKOPAA_STR-FONDS sy-vline 
WA_DFKKOPAA_STR-FKBER sy-vline 
WA_DFKKOPAA_STR-MEASURE sy-vline 
WA_DFKKOPAA_STR-GRANT_NBR sy-vline 
WA_DFKKOPAA_STR-BUDGETYEAR sy-vline 
WA_DFKKOPAA_STR-BUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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