ABAP Select data from SAP table RELM_PL_USAGE_X into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELM_PL_USAGE_X
*  INTO TABLE @DATA(IT_RELM_PL_USAGE_X2).
*--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_RELM_PL_USAGE_X INDEX 1 INTO DATA(WA_RELM_PL_USAGE_X2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELM_PL_USAGE_X>-MANDT = 1.
<RELM_PL_USAGE_X>-INTRENO = 1.
<RELM_PL_USAGE_X>-PLUSSEQNO = 1.
<RELM_PL_USAGE_X>-OBJRELGUID = 1.
<RELM_PL_USAGE_X>-PLUSIND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELM_PL_USAGE_X-PLUSTYPE, sy-vline,
  WA_RELM_PL_USAGE_X-PLUSSUBTYPE, sy-vline,
  WA_RELM_PL_USAGE_X-PLUSMEASVALUE, sy-vline,
  WA_RELM_PL_USAGE_X-PLUSMEASUNIT, sy-vline,
  WA_RELM_PL_USAGE_X-PLUSISOPNEC, sy-vline,
  WA_RELM_PL_USAGE_X-VALIDFROM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELM_PL_USAGE_X 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_RELM_PL_USAGE_X 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_RELM_PL_USAGE_X INTO WA_RELM_PL_USAGE_X.


*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 CUNIT, internal->external for field PLUSMEASUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RELM_PL_USAGE_X-PLUSMEASUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELM_PL_USAGE_X-PLUSMEASUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RELM_PL_USAGE_X-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELM_PL_USAGE_X-VALIDTO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit REDAT, internal->external for field VALIDTOBP
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RELM_PL_USAGE_X-VALIDTOBP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELM_PL_USAGE_X-VALIDTOBP.
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_RELM_PL_USAGE_X_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
PLUSSEQNO TYPE STRING,
OBJRELGUID TYPE STRING,
PLUSIND TYPE STRING,
PLUSTYPE TYPE STRING,
PLUSSUBTYPE TYPE STRING,
PLUSMEASVALUE TYPE STRING,
PLUSMEASUNIT TYPE STRING,
PLUSISOPNEC TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
PLUSREALDATE TYPE STRING,
XPLUSCOMMENT TYPE STRING,
XPLUSTYPE TYPE STRING,
XPLUSSUBTYPE TYPE STRING,
XPLUSIND TYPE STRING,
PARTNERBP TYPE STRING,
ROLEBP TYPE STRING,
SUBROLEBP TYPE STRING,
VALIDFROMBP TYPE STRING,
VALIDTOBP TYPE STRING,
ROLECATEBP TYPE STRING,
XROLEBP TYPE STRING,
XSUBROLEBP TYPE STRING,
XPARTNERBP TYPE STRING,
XNAMEBP TYPE STRING,
XADDRESSBP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELM_PL_USAGE_X_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_RELM_PL_USAGE_X_STR-MANDT sy-vline 
WA_RELM_PL_USAGE_X_STR-INTRENO sy-vline 
WA_RELM_PL_USAGE_X_STR-PLUSSEQNO sy-vline 
WA_RELM_PL_USAGE_X_STR-OBJRELGUID sy-vline 
WA_RELM_PL_USAGE_X_STR-PLUSIND sy-vline 
WA_RELM_PL_USAGE_X_STR-PLUSTYPE sy-vline 
WA_RELM_PL_USAGE_X_STR-PLUSSUBTYPE sy-vline 
WA_RELM_PL_USAGE_X_STR-PLUSMEASVALUE sy-vline 
WA_RELM_PL_USAGE_X_STR-PLUSMEASUNIT sy-vline 
WA_RELM_PL_USAGE_X_STR-PLUSISOPNEC sy-vline 
WA_RELM_PL_USAGE_X_STR-VALIDFROM sy-vline 
WA_RELM_PL_USAGE_X_STR-VALIDTO sy-vline 
WA_RELM_PL_USAGE_X_STR-PLUSREALDATE sy-vline 
WA_RELM_PL_USAGE_X_STR-XPLUSCOMMENT sy-vline 
WA_RELM_PL_USAGE_X_STR-XPLUSTYPE sy-vline 
WA_RELM_PL_USAGE_X_STR-XPLUSSUBTYPE sy-vline 
WA_RELM_PL_USAGE_X_STR-XPLUSIND sy-vline 
WA_RELM_PL_USAGE_X_STR-PARTNERBP sy-vline 
WA_RELM_PL_USAGE_X_STR-ROLEBP sy-vline 
WA_RELM_PL_USAGE_X_STR-SUBROLEBP sy-vline 
WA_RELM_PL_USAGE_X_STR-VALIDFROMBP sy-vline 
WA_RELM_PL_USAGE_X_STR-VALIDTOBP sy-vline 
WA_RELM_PL_USAGE_X_STR-ROLECATEBP sy-vline 
WA_RELM_PL_USAGE_X_STR-XROLEBP sy-vline 
WA_RELM_PL_USAGE_X_STR-XSUBROLEBP sy-vline 
WA_RELM_PL_USAGE_X_STR-XPARTNERBP sy-vline 
WA_RELM_PL_USAGE_X_STR-XNAMEBP sy-vline 
WA_RELM_PL_USAGE_X_STR-XADDRESSBP sy-vline      INTO ld_text SEPARATED BY SPACE.

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