ABAP Select data from SAP table IEDOHISTORY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IEDOHISTORY
*  INTO TABLE @DATA(IT_IEDOHISTORY2).
*--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_IEDOHISTORY INDEX 1 INTO DATA(WA_IEDOHISTORY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IEDOHISTORY>-MANDT = 1.
<IEDOHISTORY>-ELECTRONICDOCUUID = 1.
<IEDOHISTORY>-ELECTRONICDOCSEQNO = 1.
<IEDOHISTORY>-ELECTRONICDOCCOMPANYCODE = 1.
<IEDOHISTORY>-ELECTRONICDOCCOUNTRY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IEDOHISTORY-ELECTRONICDOCSOURCETYPE, sy-vline,
  WA_IEDOHISTORY-ELECTRONICDOCSOURCEKEY, sy-vline,
  WA_IEDOHISTORY-ELECTRONICDOCTYPE, sy-vline,
  WA_IEDOHISTORY-ELECTRONICDOCPROCESSSTATUS, sy-vline,
  WA_IEDOHISTORY-ELECTRONICDOCLOGICALSYSTEM, sy-vline,
  WA_IEDOHISTORY-ELECTRONICDOCLASTCHANGEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IEDOHISTORY 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_IEDOHISTORY 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_IEDOHISTORY INTO WA_IEDOHISTORY.


*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.

*Conversion exit ALPHA, internal->external for field ELECTRONICDOCLOGICALSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IEDOHISTORY-ELECTRONICDOCLOGICALSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEDOHISTORY-ELECTRONICDOCLOGICALSYSTEM.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_IEDOHISTORY_STR, 
MANDT TYPE STRING,
ELECTRONICDOCUUID TYPE STRING,
ELECTRONICDOCSEQNO TYPE STRING,
ELECTRONICDOCCOMPANYCODE TYPE STRING,
ELECTRONICDOCCOUNTRY TYPE STRING,
ELECTRONICDOCSOURCETYPE TYPE STRING,
ELECTRONICDOCSOURCEKEY TYPE STRING,
ELECTRONICDOCTYPE TYPE STRING,
ELECTRONICDOCPROCESSSTATUS TYPE STRING,
ELECTRONICDOCLOGICALSYSTEM TYPE STRING,
ELECTRONICDOCLASTCHANGEDBYUSER TYPE STRING,
ELECTRONICDOCLASTCHANGEDATE TYPE STRING,
ELECTRONICDOCLASTCHANGETIME TYPE STRING,
ELECTRONICDOCCREATEDBYUSER TYPE STRING,
ELECTRONICDOCCREATIONDATE TYPE STRING,
ELECTRONICDOCCREATIONTIME TYPE STRING,
ELECTRONICDOCPROCESS TYPE STRING,
ELECTRONICDOCLASTPROCSTEP TYPE STRING,
ELECTRONICDOCLASTPROCSTEPVAR TYPE STRING,
ELECTRONICDOCHASERROR TYPE STRING,
ELECTRONICDOCPROCESSVERSION TYPE STRING,
ELECTRONICDOCSTATUS TYPE STRING,
ELECTRONICDOCPOSTINGDATE TYPE STRING,
ELECTRONICDOCISCONTINGENCY TYPE STRING,
ELECTRONICDOCMETASTATUS TYPE STRING,
ELECTRONICDOCREFERENCEPROCESS TYPE STRING,
ELECTRONICDOCCLASSNAME TYPE STRING,
ELECTRONICDOCISARCHPRPROCGDONE TYPE STRING,
ELECTRONICDOCINTERFACETYPE TYPE STRING,
ELECTRONICDOCINTERFACEUUID TYPE STRING,
ELECTRONICDOCFILEUUID TYPE STRING,
ELECTRONICDOCINTERFACEID TYPE STRING,
ELECTRONICDOCINTERFACEVERSION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IEDOHISTORY_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_IEDOHISTORY_STR-MANDT sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCUUID sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCSEQNO sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCCOMPANYCODE sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCCOUNTRY sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCSOURCETYPE sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCSOURCEKEY sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCTYPE sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCPROCESSSTATUS sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCLOGICALSYSTEM sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCLASTCHANGEDBYUSER sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCLASTCHANGEDATE sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCLASTCHANGETIME sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCCREATEDBYUSER sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCCREATIONDATE sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCCREATIONTIME sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCPROCESS sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCLASTPROCSTEP sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCLASTPROCSTEPVAR sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCHASERROR sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCPROCESSVERSION sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCSTATUS sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCPOSTINGDATE sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCISCONTINGENCY sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCMETASTATUS sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCREFERENCEPROCESS sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCCLASSNAME sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCISARCHPRPROCGDONE sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCINTERFACETYPE sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCINTERFACEUUID sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCFILEUUID sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCINTERFACEID sy-vline 
WA_IEDOHISTORY_STR-ELECTRONICDOCINTERFACEVERSION sy-vline      INTO ld_text SEPARATED BY SPACE.

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