ABAP Select data from SAP table E2KEPH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2KEPH 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 E2KEPH. 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 E2KEPH 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_E2KEPH TYPE STANDARD TABLE OF E2KEPH,
      WA_E2KEPH TYPE E2KEPH,
      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: <E2KEPH> TYPE E2KEPH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2KEPH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2KEPH
  INTO TABLE IT_E2KEPH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2KEPH
*  INTO TABLE @DATA(IT_E2KEPH2).
*--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_E2KEPH INDEX 1 INTO DATA(WA_E2KEPH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2KEPH ASSIGNING <E2KEPH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2KEPH>-MANDT = 1.
<E2KEPH>-BZOBJ = 1.
<E2KEPH>-KALNR = 1.
<E2KEPH>-KALKA = 1.
<E2KEPH>-KADKY = 1.

ENDLOOP.

LOOP AT IT_E2KEPH INTO WA_E2KEPH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2KEPH-TVERS, sy-vline,
  WA_E2KEPH-BWVAR, sy-vline,
  WA_E2KEPH-KKZMA, sy-vline,
  WA_E2KEPH-PATNR, sy-vline,
  WA_E2KEPH-KEART, sy-vline,
  WA_E2KEPH-LOSFX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2KEPH 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_E2KEPH 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_E2KEPH INTO WA_E2KEPH.


*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_E2KEPH_STR, 
MANDT TYPE STRING,
BZOBJ TYPE STRING,
KALNR TYPE STRING,
KALKA TYPE STRING,
KADKY TYPE STRING,
TVERS TYPE STRING,
BWVAR TYPE STRING,
KKZMA TYPE STRING,
PATNR TYPE STRING,
KEART TYPE STRING,
LOSFX TYPE STRING,
KKZST TYPE STRING,
KKZMM TYPE STRING,
KST001 TYPE STRING,
KST002 TYPE STRING,
KST003 TYPE STRING,
KST004 TYPE STRING,
KST005 TYPE STRING,
KST006 TYPE STRING,
KST007 TYPE STRING,
KST008 TYPE STRING,
KST009 TYPE STRING,
KST010 TYPE STRING,
KST011 TYPE STRING,
KST012 TYPE STRING,
KST013 TYPE STRING,
KST014 TYPE STRING,
KST015 TYPE STRING,
KST016 TYPE STRING,
KST017 TYPE STRING,
KST018 TYPE STRING,
KST019 TYPE STRING,
KST020 TYPE STRING,
KST021 TYPE STRING,
KST022 TYPE STRING,
KST023 TYPE STRING,
KST024 TYPE STRING,
KST025 TYPE STRING,
KST026 TYPE STRING,
KST027 TYPE STRING,
KST028 TYPE STRING,
KST029 TYPE STRING,
KST030 TYPE STRING,
KST031 TYPE STRING,
KST032 TYPE STRING,
KST033 TYPE STRING,
KST034 TYPE STRING,
KST035 TYPE STRING,
KST036 TYPE STRING,
KST037 TYPE STRING,
KST038 TYPE STRING,
KST039 TYPE STRING,
KST040 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2KEPH_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_E2KEPH_STR-MANDT sy-vline 
WA_E2KEPH_STR-BZOBJ sy-vline 
WA_E2KEPH_STR-KALNR sy-vline 
WA_E2KEPH_STR-KALKA sy-vline 
WA_E2KEPH_STR-KADKY sy-vline 
WA_E2KEPH_STR-TVERS sy-vline 
WA_E2KEPH_STR-BWVAR sy-vline 
WA_E2KEPH_STR-KKZMA sy-vline 
WA_E2KEPH_STR-PATNR sy-vline 
WA_E2KEPH_STR-KEART sy-vline 
WA_E2KEPH_STR-LOSFX sy-vline 
WA_E2KEPH_STR-KKZST sy-vline 
WA_E2KEPH_STR-KKZMM sy-vline 
WA_E2KEPH_STR-KST001 sy-vline 
WA_E2KEPH_STR-KST002 sy-vline 
WA_E2KEPH_STR-KST003 sy-vline 
WA_E2KEPH_STR-KST004 sy-vline 
WA_E2KEPH_STR-KST005 sy-vline 
WA_E2KEPH_STR-KST006 sy-vline 
WA_E2KEPH_STR-KST007 sy-vline 
WA_E2KEPH_STR-KST008 sy-vline 
WA_E2KEPH_STR-KST009 sy-vline 
WA_E2KEPH_STR-KST010 sy-vline 
WA_E2KEPH_STR-KST011 sy-vline 
WA_E2KEPH_STR-KST012 sy-vline 
WA_E2KEPH_STR-KST013 sy-vline 
WA_E2KEPH_STR-KST014 sy-vline 
WA_E2KEPH_STR-KST015 sy-vline 
WA_E2KEPH_STR-KST016 sy-vline 
WA_E2KEPH_STR-KST017 sy-vline 
WA_E2KEPH_STR-KST018 sy-vline 
WA_E2KEPH_STR-KST019 sy-vline 
WA_E2KEPH_STR-KST020 sy-vline 
WA_E2KEPH_STR-KST021 sy-vline 
WA_E2KEPH_STR-KST022 sy-vline 
WA_E2KEPH_STR-KST023 sy-vline 
WA_E2KEPH_STR-KST024 sy-vline 
WA_E2KEPH_STR-KST025 sy-vline 
WA_E2KEPH_STR-KST026 sy-vline 
WA_E2KEPH_STR-KST027 sy-vline 
WA_E2KEPH_STR-KST028 sy-vline 
WA_E2KEPH_STR-KST029 sy-vline 
WA_E2KEPH_STR-KST030 sy-vline 
WA_E2KEPH_STR-KST031 sy-vline 
WA_E2KEPH_STR-KST032 sy-vline 
WA_E2KEPH_STR-KST033 sy-vline 
WA_E2KEPH_STR-KST034 sy-vline 
WA_E2KEPH_STR-KST035 sy-vline 
WA_E2KEPH_STR-KST036 sy-vline 
WA_E2KEPH_STR-KST037 sy-vline 
WA_E2KEPH_STR-KST038 sy-vline 
WA_E2KEPH_STR-KST039 sy-vline 
WA_E2KEPH_STR-KST040 sy-vline      INTO ld_text SEPARATED BY SPACE.

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