ABAP Select data from SAP table /STTPEC/S_RLMOB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /STTPEC/S_RLMOB 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 /STTPEC/S_RLMOB. 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 /STTPEC/S_RLMOB 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_/STTPEC/S_RLMOB TYPE STANDARD TABLE OF /STTPEC/S_RLMOB,
      WA_/STTPEC/S_RLMOB TYPE /STTPEC/S_RLMOB,
      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: </STTPEC/S_RLMOB> TYPE /STTPEC/S_RLMOB.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /STTPEC/S_RLMOB
  INTO TABLE IT_/STTPEC/S_RLMOB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /STTPEC/S_RLMOB
*  INTO TABLE @DATA(IT_/STTPEC/S_RLMOB2).
*--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_/STTPEC/S_RLMOB INDEX 1 INTO DATA(WA_/STTPEC/S_RLMOB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/STTPEC/S_RLMOB ASSIGNING </STTPEC/S_RLMOB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</STTPEC/S_RLMOB>-PCLEAR = 1.
</STTPEC/S_RLMOB>-PBACK = 1.
</STTPEC/S_RLMOB>-PNEXT = 1.
</STTPEC/S_RLMOB>-PPOST = 1.
</STTPEC/S_RLMOB>-PSCAN = 1.

ENDLOOP.

LOOP AT IT_/STTPEC/S_RLMOB INTO WA_/STTPEC/S_RLMOB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/STTPEC/S_RLMOB-PNOK, sy-vline,
  WA_/STTPEC/S_RLMOB-PREMOVE, sy-vline,
  WA_/STTPEC/S_RLMOB-PSCNDOBJ, sy-vline,
  WA_/STTPEC/S_RLMOB-PPGUP, sy-vline,
  WA_/STTPEC/S_RLMOB-PPGDN, sy-vline,
  WA_/STTPEC/S_RLMOB-PNEIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/STTPEC/S_RLMOB 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_/STTPEC/S_RLMOB 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_/STTPEC/S_RLMOB INTO WA_/STTPEC/S_RLMOB.


*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_/STTPEC/S_RLMOB_STR, 
PCLEAR TYPE STRING,
PBACK TYPE STRING,
PNEXT TYPE STRING,
PPOST TYPE STRING,
PSCAN TYPE STRING,
PNOK TYPE STRING,
PREMOVE TYPE STRING,
PSCNDOBJ TYPE STRING,
PPGUP TYPE STRING,
PPGDN TYPE STRING,
PNEIT TYPE STRING,
PPRVIT TYPE STRING,
PUNPCK TYPE STRING,
UEPL TYPE STRING,
PCKI TYPE STRING,
CHKR TYPE STRING,
CVBELN TYPE STRING,
CEXIDV TYPE STRING,
MESSAGE1 TYPE STRING,
MESSAGE2 TYPE STRING,
MESSAGE3 TYPE STRING,
MESSAGE4 TYPE STRING,
MESSAGE5 TYPE STRING,
MESSAGE6 TYPE STRING,
MESSAGE7 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/STTPEC/S_RLMOB_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_/STTPEC/S_RLMOB_STR-PCLEAR sy-vline 
WA_/STTPEC/S_RLMOB_STR-PBACK sy-vline 
WA_/STTPEC/S_RLMOB_STR-PNEXT sy-vline 
WA_/STTPEC/S_RLMOB_STR-PPOST sy-vline 
WA_/STTPEC/S_RLMOB_STR-PSCAN sy-vline 
WA_/STTPEC/S_RLMOB_STR-PNOK sy-vline 
WA_/STTPEC/S_RLMOB_STR-PREMOVE sy-vline 
WA_/STTPEC/S_RLMOB_STR-PSCNDOBJ sy-vline 
WA_/STTPEC/S_RLMOB_STR-PPGUP sy-vline 
WA_/STTPEC/S_RLMOB_STR-PPGDN sy-vline 
WA_/STTPEC/S_RLMOB_STR-PNEIT sy-vline 
WA_/STTPEC/S_RLMOB_STR-PPRVIT sy-vline 
WA_/STTPEC/S_RLMOB_STR-PUNPCK sy-vline 
WA_/STTPEC/S_RLMOB_STR-UEPL sy-vline 
WA_/STTPEC/S_RLMOB_STR-PCKI sy-vline 
WA_/STTPEC/S_RLMOB_STR-CHKR sy-vline 
WA_/STTPEC/S_RLMOB_STR-CVBELN sy-vline 
WA_/STTPEC/S_RLMOB_STR-CEXIDV sy-vline 
WA_/STTPEC/S_RLMOB_STR-MESSAGE1 sy-vline 
WA_/STTPEC/S_RLMOB_STR-MESSAGE2 sy-vline 
WA_/STTPEC/S_RLMOB_STR-MESSAGE3 sy-vline 
WA_/STTPEC/S_RLMOB_STR-MESSAGE4 sy-vline 
WA_/STTPEC/S_RLMOB_STR-MESSAGE5 sy-vline 
WA_/STTPEC/S_RLMOB_STR-MESSAGE6 sy-vline 
WA_/STTPEC/S_RLMOB_STR-MESSAGE7 sy-vline      INTO ld_text SEPARATED BY SPACE.

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