ABAP Select data from SAP table EDI_DC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDI_DC
*  INTO TABLE @DATA(IT_EDI_DC2).
*--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_EDI_DC INDEX 1 INTO DATA(WA_EDI_DC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDI_DC>-TABNAM = 1.
<EDI_DC>-MANDT = 1.
<EDI_DC>-DOCNUM = 1.
<EDI_DC>-DOCREL = 1.
<EDI_DC>-STATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDI_DC-DOCTYP, sy-vline,
  WA_EDI_DC-DIRECT, sy-vline,
  WA_EDI_DC-RCVPOR, sy-vline,
  WA_EDI_DC-RCVPRT, sy-vline,
  WA_EDI_DC-RCVPRN, sy-vline,
  WA_EDI_DC-RCVSAD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDI_DC 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_EDI_DC 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_EDI_DC INTO WA_EDI_DC.


*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_EDI_DC_STR, 
TABNAM TYPE STRING,
MANDT TYPE STRING,
DOCNUM TYPE STRING,
DOCREL TYPE STRING,
STATUS TYPE STRING,
DOCTYP TYPE STRING,
DIRECT TYPE STRING,
RCVPOR TYPE STRING,
RCVPRT TYPE STRING,
RCVPRN TYPE STRING,
RCVSAD TYPE STRING,
RCVLAD TYPE STRING,
STD TYPE STRING,
STDVRS TYPE STRING,
STDMES TYPE STRING,
MESCOD TYPE STRING,
MESFCT TYPE STRING,
OUTMOD TYPE STRING,
TEST TYPE STRING,
SNDPOR TYPE STRING,
SNDPRT TYPE STRING,
SNDPRN TYPE STRING,
SNDSAD TYPE STRING,
SNDLAD TYPE STRING,
REFINT TYPE STRING,
REFGRP TYPE STRING,
REFMES TYPE STRING,
ARCKEY TYPE STRING,
CREDAT TYPE STRING,
CRETIM TYPE STRING,
MESTYP TYPE STRING,
IDOCTYP TYPE STRING,
CIMTYP TYPE STRING,
RCVPFC TYPE STRING,
SNDPFC TYPE STRING,
SERIAL TYPE STRING,
EXPRSS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDI_DC_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_EDI_DC_STR-TABNAM sy-vline 
WA_EDI_DC_STR-MANDT sy-vline 
WA_EDI_DC_STR-DOCNUM sy-vline 
WA_EDI_DC_STR-DOCREL sy-vline 
WA_EDI_DC_STR-STATUS sy-vline 
WA_EDI_DC_STR-DOCTYP sy-vline 
WA_EDI_DC_STR-DIRECT sy-vline 
WA_EDI_DC_STR-RCVPOR sy-vline 
WA_EDI_DC_STR-RCVPRT sy-vline 
WA_EDI_DC_STR-RCVPRN sy-vline 
WA_EDI_DC_STR-RCVSAD sy-vline 
WA_EDI_DC_STR-RCVLAD sy-vline 
WA_EDI_DC_STR-STD sy-vline 
WA_EDI_DC_STR-STDVRS sy-vline 
WA_EDI_DC_STR-STDMES sy-vline 
WA_EDI_DC_STR-MESCOD sy-vline 
WA_EDI_DC_STR-MESFCT sy-vline 
WA_EDI_DC_STR-OUTMOD sy-vline 
WA_EDI_DC_STR-TEST sy-vline 
WA_EDI_DC_STR-SNDPOR sy-vline 
WA_EDI_DC_STR-SNDPRT sy-vline 
WA_EDI_DC_STR-SNDPRN sy-vline 
WA_EDI_DC_STR-SNDSAD sy-vline 
WA_EDI_DC_STR-SNDLAD sy-vline 
WA_EDI_DC_STR-REFINT sy-vline 
WA_EDI_DC_STR-REFGRP sy-vline 
WA_EDI_DC_STR-REFMES sy-vline 
WA_EDI_DC_STR-ARCKEY sy-vline 
WA_EDI_DC_STR-CREDAT sy-vline 
WA_EDI_DC_STR-CRETIM sy-vline 
WA_EDI_DC_STR-MESTYP sy-vline 
WA_EDI_DC_STR-IDOCTYP sy-vline 
WA_EDI_DC_STR-CIMTYP sy-vline 
WA_EDI_DC_STR-RCVPFC sy-vline 
WA_EDI_DC_STR-SNDPFC sy-vline 
WA_EDI_DC_STR-SERIAL sy-vline 
WA_EDI_DC_STR-EXPRSS sy-vline      INTO ld_text SEPARATED BY SPACE.

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