ABAP Select data from SAP table LSO_RM_STEPS_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LSO_RM_STEPS_S
*  INTO TABLE @DATA(IT_LSO_RM_STEPS_S2).
*--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_LSO_RM_STEPS_S INDEX 1 INTO DATA(WA_LSO_RM_STEPS_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LSO_RM_STEPS_S>-STEPID = 1.
<LSO_RM_STEPS_S>-DISPLAYSTEPID = 1.
<LSO_RM_STEPS_S>-STEPNAME = 1.
<LSO_RM_STEPS_S>-STEPTYPE = 1.
<LSO_RM_STEPS_S>-STEPVISIBILITY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LSO_RM_STEPS_S-STEPENABLED, sy-vline,
  WA_LSO_RM_STEPS_S-PREVSTEPID, sy-vline,
  WA_LSO_RM_STEPS_S-NEXTSTEPID, sy-vline,
  WA_LSO_RM_STEPS_S-PREVENABLED, sy-vline,
  WA_LSO_RM_STEPS_S-NEXTENABLED, sy-vline,
  WA_LSO_RM_STEPS_S-PREVBUTTONTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LSO_RM_STEPS_S 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_LSO_RM_STEPS_S 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_LSO_RM_STEPS_S INTO WA_LSO_RM_STEPS_S.


*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_LSO_RM_STEPS_S_STR, 
STEPID TYPE STRING,
DISPLAYSTEPID TYPE STRING,
STEPNAME TYPE STRING,
STEPTYPE TYPE STRING,
STEPVISIBILITY TYPE STRING,
STEPENABLED TYPE STRING,
PREVSTEPID TYPE STRING,
NEXTSTEPID TYPE STRING,
PREVENABLED TYPE STRING,
NEXTENABLED TYPE STRING,
PREVBUTTONTEXT TYPE STRING,
NEXTBUTTONTEXT TYPE STRING,
VIEWCOMP TYPE STRING,
TOPSTRIPVISIBILITY TYPE STRING,
NEXTCOMP TYPE STRING,
PREVCOMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LSO_RM_STEPS_S_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_LSO_RM_STEPS_S_STR-STEPID sy-vline 
WA_LSO_RM_STEPS_S_STR-DISPLAYSTEPID sy-vline 
WA_LSO_RM_STEPS_S_STR-STEPNAME sy-vline 
WA_LSO_RM_STEPS_S_STR-STEPTYPE sy-vline 
WA_LSO_RM_STEPS_S_STR-STEPVISIBILITY sy-vline 
WA_LSO_RM_STEPS_S_STR-STEPENABLED sy-vline 
WA_LSO_RM_STEPS_S_STR-PREVSTEPID sy-vline 
WA_LSO_RM_STEPS_S_STR-NEXTSTEPID sy-vline 
WA_LSO_RM_STEPS_S_STR-PREVENABLED sy-vline 
WA_LSO_RM_STEPS_S_STR-NEXTENABLED sy-vline 
WA_LSO_RM_STEPS_S_STR-PREVBUTTONTEXT sy-vline 
WA_LSO_RM_STEPS_S_STR-NEXTBUTTONTEXT sy-vline 
WA_LSO_RM_STEPS_S_STR-VIEWCOMP sy-vline 
WA_LSO_RM_STEPS_S_STR-TOPSTRIPVISIBILITY sy-vline 
WA_LSO_RM_STEPS_S_STR-NEXTCOMP sy-vline 
WA_LSO_RM_STEPS_S_STR-PREVCOMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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