ABAP Select data from SAP table EDISDEF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDISDEF
*  INTO TABLE @DATA(IT_EDISDEF2).
*--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_EDISDEF INDEX 1 INTO DATA(WA_EDISDEF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDISDEF>-SEGTYP = 1.
<EDISDEF>-VERSION = 1.
<EDISDEF>-SEGDEF = 1.
<EDISDEF>-RELEASED = 1.
<EDISDEF>-CLOSED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDISDEF-CREDATE, sy-vline,
  WA_EDISDEF-CRETIME, sy-vline,
  WA_EDISDEF-LDATE, sy-vline,
  WA_EDISDEF-LTIME, sy-vline,
  WA_EDISDEF-FIELDNUM, sy-vline,
  WA_EDISDEF-EXPLENG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDISDEF 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_EDISDEF 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_EDISDEF INTO WA_EDISDEF.


*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_EDISDEF_STR, 
SEGTYP TYPE STRING,
VERSION TYPE STRING,
SEGDEF TYPE STRING,
RELEASED TYPE STRING,
CLOSED TYPE STRING,
CREDATE TYPE STRING,
CRETIME TYPE STRING,
LDATE TYPE STRING,
LTIME TYPE STRING,
FIELDNUM TYPE STRING,
EXPLENG TYPE STRING,
APPLREL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDISDEF_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_EDISDEF_STR-SEGTYP sy-vline 
WA_EDISDEF_STR-VERSION sy-vline 
WA_EDISDEF_STR-SEGDEF sy-vline 
WA_EDISDEF_STR-RELEASED sy-vline 
WA_EDISDEF_STR-CLOSED sy-vline 
WA_EDISDEF_STR-CREDATE sy-vline 
WA_EDISDEF_STR-CRETIME sy-vline 
WA_EDISDEF_STR-LDATE sy-vline 
WA_EDISDEF_STR-LTIME sy-vline 
WA_EDISDEF_STR-FIELDNUM sy-vline 
WA_EDISDEF_STR-EXPLENG sy-vline 
WA_EDISDEF_STR-APPLREL sy-vline      INTO ld_text SEPARATED BY SPACE.

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