ABAP Select data from SAP table E1EDKF1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1EDKF1 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 E1EDKF1. 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 E1EDKF1 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_E1EDKF1 TYPE STANDARD TABLE OF E1EDKF1,
      WA_E1EDKF1 TYPE E1EDKF1,
      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: <E1EDKF1> TYPE E1EDKF1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1EDKF1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1EDKF1
  INTO TABLE IT_E1EDKF1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1EDKF1
*  INTO TABLE @DATA(IT_E1EDKF12).
*--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_E1EDKF1 INDEX 1 INTO DATA(WA_E1EDKF12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1EDKF1 ASSIGNING <E1EDKF1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1EDKF1>-AKART = 1.
<E1EDKF1>-AKARX = 1.
<E1EDKF1>-AKKTP = 1.
<E1EDKF1>-AKKTX = 1.
<E1EDKF1>-LCNUM = 1.

ENDLOOP.

LOOP AT IT_E1EDKF1 INTO WA_E1EDKF1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1EDKF1-AIDAT, sy-vline,
  WA_E1EDKF1-AXDAT, sy-vline,
  WA_E1EDKF1-WRTAK, sy-vline,
  WA_E1EDKF1-WAERS, sy-vline,
  WA_E1EDKF1-OFAKW, sy-vline,
  WA_E1EDKF1-AJDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1EDKF1 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_E1EDKF1 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_E1EDKF1 INTO WA_E1EDKF1.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_E1EDKF1_STR, 
AKART TYPE STRING,
AKARX TYPE STRING,
AKKTP TYPE STRING,
AKKTX TYPE STRING,
LCNUM TYPE STRING,
AIDAT TYPE STRING,
AXDAT TYPE STRING,
WRTAK TYPE STRING,
WAERS TYPE STRING,
OFAKW TYPE STRING,
AJDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1EDKF1_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_E1EDKF1_STR-AKART sy-vline 
WA_E1EDKF1_STR-AKARX sy-vline 
WA_E1EDKF1_STR-AKKTP sy-vline 
WA_E1EDKF1_STR-AKKTX sy-vline 
WA_E1EDKF1_STR-LCNUM sy-vline 
WA_E1EDKF1_STR-AIDAT sy-vline 
WA_E1EDKF1_STR-AXDAT sy-vline 
WA_E1EDKF1_STR-WRTAK sy-vline 
WA_E1EDKF1_STR-WAERS sy-vline 
WA_E1EDKF1_STR-OFAKW sy-vline 
WA_E1EDKF1_STR-AJDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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