ABAP Select data from SAP table EAKKP1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EAKKP1 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 EAKKP1. 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 EAKKP1 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_EAKKP1 TYPE STANDARD TABLE OF EAKKP1,
      WA_EAKKP1 TYPE EAKKP1,
      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: <EAKKP1> TYPE EAKKP1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EAKKP1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EAKKP1
  INTO TABLE IT_EAKKP1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EAKKP1
*  INTO TABLE @DATA(IT_EAKKP12).
*--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_EAKKP1 INDEX 1 INTO DATA(WA_EAKKP12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EAKKP1 ASSIGNING <EAKKP1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EAKKP1>-KUNFS = 1.
<EAKKP1>-KUNCK = 1.
<EAKKP1>-AADFS = 1.
<EAKKP1>-AADCK = 1.
<EAKKP1>-AIDFS = 1.

ENDLOOP.

LOOP AT IT_EAKKP1 INTO WA_EAKKP1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EAKKP1-AIDCK, sy-vline,
  WA_EAKKP1-AEDFS, sy-vline,
  WA_EAKKP1-AEDCK, sy-vline,
  WA_EAKKP1-AXDFS, sy-vline,
  WA_EAKKP1-AXDCK, sy-vline,
  WA_EAKKP1-AVDFS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EAKKP1 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_EAKKP1 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_EAKKP1 INTO WA_EAKKP1.


*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 ISOLA, internal->external for field FDLANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_EAKKP1-FDLANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAKKP1-FDLANGU.
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_EAKKP1_STR, 
KUNFS TYPE STRING,
KUNCK TYPE STRING,
AADFS TYPE STRING,
AADCK TYPE STRING,
AIDFS TYPE STRING,
AIDCK TYPE STRING,
AEDFS TYPE STRING,
AEDCK TYPE STRING,
AXDFS TYPE STRING,
AXDCK TYPE STRING,
AVDFS TYPE STRING,
AVDCK TYPE STRING,
ALDFS TYPE STRING,
ALDCK TYPE STRING,
ADDFS TYPE STRING,
ADDCK TYPE STRING,
AWEFS TYPE STRING,
AWECK TYPE STRING,
IAPFS TYPE STRING,
EUPFS TYPE STRING,
EUPCK TYPE STRING,
TEZFS TYPE STRING,
TEZCK TYPE STRING,
INCFS TYPE STRING,
INCCK TYPE STRING,
AUTFS TYPE STRING,
AUTCK TYPE STRING,
ATRFS TYPE STRING,
ATRCK TYPE STRING,
AMIFS TYPE STRING,
AMICK TYPE STRING,
TXTGR TYPE STRING,
FDLANGU TYPE STRING,
REFFS TYPE STRING,
INDGRUND TYPE STRING,
DOKFREI TYPE STRING,
FTCCD TYPE STRING,
DDZCK TYPE STRING,
DDICK TYPE STRING,
UNPFS TYPE STRING,
UNPCK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EAKKP1_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_EAKKP1_STR-KUNFS sy-vline 
WA_EAKKP1_STR-KUNCK sy-vline 
WA_EAKKP1_STR-AADFS sy-vline 
WA_EAKKP1_STR-AADCK sy-vline 
WA_EAKKP1_STR-AIDFS sy-vline 
WA_EAKKP1_STR-AIDCK sy-vline 
WA_EAKKP1_STR-AEDFS sy-vline 
WA_EAKKP1_STR-AEDCK sy-vline 
WA_EAKKP1_STR-AXDFS sy-vline 
WA_EAKKP1_STR-AXDCK sy-vline 
WA_EAKKP1_STR-AVDFS sy-vline 
WA_EAKKP1_STR-AVDCK sy-vline 
WA_EAKKP1_STR-ALDFS sy-vline 
WA_EAKKP1_STR-ALDCK sy-vline 
WA_EAKKP1_STR-ADDFS sy-vline 
WA_EAKKP1_STR-ADDCK sy-vline 
WA_EAKKP1_STR-AWEFS sy-vline 
WA_EAKKP1_STR-AWECK sy-vline 
WA_EAKKP1_STR-IAPFS sy-vline 
WA_EAKKP1_STR-EUPFS sy-vline 
WA_EAKKP1_STR-EUPCK sy-vline 
WA_EAKKP1_STR-TEZFS sy-vline 
WA_EAKKP1_STR-TEZCK sy-vline 
WA_EAKKP1_STR-INCFS sy-vline 
WA_EAKKP1_STR-INCCK sy-vline 
WA_EAKKP1_STR-AUTFS sy-vline 
WA_EAKKP1_STR-AUTCK sy-vline 
WA_EAKKP1_STR-ATRFS sy-vline 
WA_EAKKP1_STR-ATRCK sy-vline 
WA_EAKKP1_STR-AMIFS sy-vline 
WA_EAKKP1_STR-AMICK sy-vline 
WA_EAKKP1_STR-TXTGR sy-vline 
WA_EAKKP1_STR-FDLANGU sy-vline 
WA_EAKKP1_STR-REFFS sy-vline 
WA_EAKKP1_STR-INDGRUND sy-vline 
WA_EAKKP1_STR-DOKFREI sy-vline 
WA_EAKKP1_STR-FTCCD sy-vline 
WA_EAKKP1_STR-DDZCK sy-vline 
WA_EAKKP1_STR-DDICK sy-vline 
WA_EAKKP1_STR-UNPFS sy-vline 
WA_EAKKP1_STR-UNPCK sy-vline      INTO ld_text SEPARATED BY SPACE.

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