ABAP Select data from SAP table E1EDC20 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1EDC20 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 E1EDC20. 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 E1EDC20 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_E1EDC20 TYPE STANDARD TABLE OF E1EDC20,
      WA_E1EDC20 TYPE E1EDC20,
      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: <E1EDC20> TYPE E1EDC20.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1EDC20.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1EDC20
  INTO TABLE IT_E1EDC20.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1EDC20
*  INTO TABLE @DATA(IT_E1EDC202).
*--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_E1EDC20 INDEX 1 INTO DATA(WA_E1EDC202).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1EDC20 ASSIGNING <E1EDC20>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1EDC20>-SGTYP = 1.
<E1EDC20>-PACKNO = 1.
<E1EDC20>-INTROW = 1.
<E1EDC20>-EXTROW = 1.
<E1EDC20>-EXGRP = 1.

ENDLOOP.

LOOP AT IT_E1EDC20 INTO WA_E1EDC20.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1EDC20-RANG, sy-vline,
  WA_E1EDC20-SUBPACKNO, sy-vline,
  WA_E1EDC20-ZLTYP, sy-vline,
  WA_E1EDC20-LVALT, sy-vline,
  WA_E1EDC20-ZLART, sy-vline,
  WA_E1EDC20-SRVPOS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1EDC20 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_E1EDC20 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_E1EDC20 INTO WA_E1EDC20.


*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_E1EDC20_STR, 
SGTYP TYPE STRING,
PACKNO TYPE STRING,
INTROW TYPE STRING,
EXTROW TYPE STRING,
EXGRP TYPE STRING,
RANG TYPE STRING,
SUBPACKNO TYPE STRING,
ZLTYP TYPE STRING,
LVALT TYPE STRING,
ZLART TYPE STRING,
SRVPOS TYPE STRING,
MATKL TYPE STRING,
MENGE TYPE STRING,
MENEE TYPE STRING,
PEINH TYPE STRING,
PREIS TYPE STRING,
BRTWR TYPE STRING,
NETWR TYPE STRING,
CURCY TYPE STRING,
UEBTO TYPE STRING,
UEBTK TYPE STRING,
LBNUM TYPE STRING,
AUSGB TYPE STRING,
STLVPOS TYPE STRING,
EXTSRVNO TYPE STRING,
FRPOS TYPE STRING,
TOPOS TYPE STRING,
KTEXT1 TYPE STRING,
PERNR TYPE STRING,
LGART TYPE STRING,
ZWERT TYPE STRING,
KNT_MENGE TYPE STRING,
KNT_WERT TYPE STRING,
UNG_WERT TYPE STRING,
UNG_MENGE TYPE STRING,
ALTROW TYPE STRING,
DEL TYPE STRING,
MSGFN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1EDC20_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_E1EDC20_STR-SGTYP sy-vline 
WA_E1EDC20_STR-PACKNO sy-vline 
WA_E1EDC20_STR-INTROW sy-vline 
WA_E1EDC20_STR-EXTROW sy-vline 
WA_E1EDC20_STR-EXGRP sy-vline 
WA_E1EDC20_STR-RANG sy-vline 
WA_E1EDC20_STR-SUBPACKNO sy-vline 
WA_E1EDC20_STR-ZLTYP sy-vline 
WA_E1EDC20_STR-LVALT sy-vline 
WA_E1EDC20_STR-ZLART sy-vline 
WA_E1EDC20_STR-SRVPOS sy-vline 
WA_E1EDC20_STR-MATKL sy-vline 
WA_E1EDC20_STR-MENGE sy-vline 
WA_E1EDC20_STR-MENEE sy-vline 
WA_E1EDC20_STR-PEINH sy-vline 
WA_E1EDC20_STR-PREIS sy-vline 
WA_E1EDC20_STR-BRTWR sy-vline 
WA_E1EDC20_STR-NETWR sy-vline 
WA_E1EDC20_STR-CURCY sy-vline 
WA_E1EDC20_STR-UEBTO sy-vline 
WA_E1EDC20_STR-UEBTK sy-vline 
WA_E1EDC20_STR-LBNUM sy-vline 
WA_E1EDC20_STR-AUSGB sy-vline 
WA_E1EDC20_STR-STLVPOS sy-vline 
WA_E1EDC20_STR-EXTSRVNO sy-vline 
WA_E1EDC20_STR-FRPOS sy-vline 
WA_E1EDC20_STR-TOPOS sy-vline 
WA_E1EDC20_STR-KTEXT1 sy-vline 
WA_E1EDC20_STR-PERNR sy-vline 
WA_E1EDC20_STR-LGART sy-vline 
WA_E1EDC20_STR-ZWERT sy-vline 
WA_E1EDC20_STR-KNT_MENGE sy-vline 
WA_E1EDC20_STR-KNT_WERT sy-vline 
WA_E1EDC20_STR-UNG_WERT sy-vline 
WA_E1EDC20_STR-UNG_MENGE sy-vline 
WA_E1EDC20_STR-ALTROW sy-vline 
WA_E1EDC20_STR-DEL sy-vline 
WA_E1EDC20_STR-MSGFN sy-vline      INTO ld_text SEPARATED BY SPACE.

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