ABAP Select data from SAP table EIDESWTDOCSTEPREF_DISPLAY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EIDESWTDOCSTEPREF_DISPLAY
*  INTO TABLE @DATA(IT_EIDESWTDOCSTEPREF_DISPLAY2).
*--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_EIDESWTDOCSTEPREF_DISPLAY INDEX 1 INTO DATA(WA_EIDESWTDOCSTEPREF_DISPLAY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EIDESWTDOCSTEPREF_DISPLAY>-ACTDATE = 1.
<EIDESWTDOCSTEPREF_DISPLAY>-ACTTIME = 1.
<EIDESWTDOCSTEPREF_DISPLAY>-ACTIVITY = 1.
<EIDESWTDOCSTEPREF_DISPLAY>-ACTIVITYTEXT = 1.
<EIDESWTDOCSTEPREF_DISPLAY>-STATUSICON = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EIDESWTDOCSTEPREF_DISPLAY-STATUS, sy-vline,
  WA_EIDESWTDOCSTEPREF_DISPLAY-STATUSTEXT, sy-vline,
  WA_EIDESWTDOCSTEPREF_DISPLAY-OBJECT, sy-vline,
  WA_EIDESWTDOCSTEPREF_DISPLAY-OBJECTKEY, sy-vline,
  WA_EIDESWTDOCSTEPREF_DISPLAY-STEPKEY, sy-vline,
  WA_EIDESWTDOCSTEPREF_DISPLAY-REFKEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EIDESWTDOCSTEPREF_DISPLAY 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_EIDESWTDOCSTEPREF_DISPLAY 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_EIDESWTDOCSTEPREF_DISPLAY INTO WA_EIDESWTDOCSTEPREF_DISPLAY.


*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_EIDESWTDOCSTEPREF_DISPLAY_STR, 
ACTDATE TYPE STRING,
ACTTIME TYPE STRING,
ACTIVITY TYPE STRING,
ACTIVITYTEXT TYPE STRING,
STATUSICON TYPE STRING,
STATUS TYPE STRING,
STATUSTEXT TYPE STRING,
OBJECT TYPE STRING,
OBJECTKEY TYPE STRING,
STEPKEY TYPE STRING,
REFKEY TYPE STRING,
ATTRTYPE TYPE STRING,
ATTRVALUE TYPE STRING,
REFNAME TYPE STRING,
REFVALUE TYPE STRING,
TIMESTAMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EIDESWTDOCSTEPREF_DISPLAY_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_EIDESWTDOCSTEPREF_DISPLAY_STR-ACTDATE sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-ACTTIME sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-ACTIVITY sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-ACTIVITYTEXT sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-STATUSICON sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-STATUS sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-STATUSTEXT sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-OBJECT sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-OBJECTKEY sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-STEPKEY sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-REFKEY sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-ATTRTYPE sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-ATTRVALUE sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-REFNAME sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-REFVALUE sy-vline 
WA_EIDESWTDOCSTEPREF_DISPLAY_STR-TIMESTAMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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