ABAP Select data from SAP table EWBSTEPX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWBSTEPX
*  INTO TABLE @DATA(IT_EWBSTEPX2).
*--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_EWBSTEPX INDEX 1 INTO DATA(WA_EWBSTEPX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWBSTEPX>-MANDT = 1.
<EWBSTEPX>-ACTSTAT = 1.
<EWBSTEPX>-BUSPROC = 1.
<EWBSTEPX>-STEPNR = 1.
<EWBSTEPX>-STEPLABEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWBSTEPX-PROCCLID, sy-vline,
  WA_EWBSTEPX-ASYNC, sy-vline,
  WA_EWBSTEPX-INACTIVE, sy-vline,
  WA_EWBSTEPX-NOREENTRY, sy-vline,
  WA_EWBSTEPX-NOBACKSTEP, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_EWBSTEPX 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_EWBSTEPX 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_EWBSTEPX INTO WA_EWBSTEPX.


*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_EWBSTEPX_STR, 
MANDT TYPE STRING,
ACTSTAT TYPE STRING,
BUSPROC TYPE STRING,
STEPNR TYPE STRING,
STEPLABEL TYPE STRING,
PROCCLID TYPE STRING,
ASYNC TYPE STRING,
INACTIVE TYPE STRING,
NOREENTRY TYPE STRING,
NOBACKSTEP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWBSTEPX_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_EWBSTEPX_STR-MANDT sy-vline 
WA_EWBSTEPX_STR-ACTSTAT sy-vline 
WA_EWBSTEPX_STR-BUSPROC sy-vline 
WA_EWBSTEPX_STR-STEPNR sy-vline 
WA_EWBSTEPX_STR-STEPLABEL sy-vline 
WA_EWBSTEPX_STR-PROCCLID sy-vline 
WA_EWBSTEPX_STR-ASYNC sy-vline 
WA_EWBSTEPX_STR-INACTIVE sy-vline 
WA_EWBSTEPX_STR-NOREENTRY sy-vline 
WA_EWBSTEPX_STR-NOBACKSTEP sy-vline      INTO ld_text SEPARATED BY SPACE.

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