ABAP Select data from SAP table /PLMU/S_RCA_LISTCOMP_HIER_UI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PLMU/S_RCA_LISTCOMP_HIER_UI
*  INTO TABLE @DATA(IT_/PLMU/S_RCA_LISTCOMP_HIER_UI2).
*--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_/PLMU/S_RCA_LISTCOMP_HIER_UI INDEX 1 INTO DATA(WA_/PLMU/S_RCA_LISTCOMP_HIER_UI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PLMU/S_RCA_LISTCOMP_HIER_UI>-RCP_GUID = 1.
</PLMU/S_RCA_LISTCOMP_HIER_UI>-REF_RCP = 1.
</PLMU/S_RCA_LISTCOMP_HIER_UI>-CALC_ID = 1.
</PLMU/S_RCA_LISTCOMP_HIER_UI>-SORTNO = 1.
</PLMU/S_RCA_LISTCOMP_HIER_UI>-ITEM_GUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PLMU/S_RCA_LISTCOMP_HIER_UI-POSNR, sy-vline,
  WA_/PLMU/S_RCA_LISTCOMP_HIER_UI-SUBID, sy-vline,
  WA_/PLMU/S_RCA_LISTCOMP_HIER_UI-SUBRECN, sy-vline,
  WA_/PLMU/S_RCA_LISTCOMP_HIER_UI-SUBID_DESCR_1, sy-vline,
  WA_/PLMU/S_RCA_LISTCOMP_HIER_UI-SUBID_DESCR_2, sy-vline,
  WA_/PLMU/S_RCA_LISTCOMP_HIER_UI-COMP_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PLMU/S_RCA_LISTCOMP_HIER_UI 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_/PLMU/S_RCA_LISTCOMP_HIER_UI 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_/PLMU/S_RCA_LISTCOMP_HIER_UI INTO WA_/PLMU/S_RCA_LISTCOMP_HIER_UI.


*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 RCPNZ, internal->external for field SORTNO
CALL FUNCTION 'CONVERSION_EXIT_RCPNZ_OUTPUT'
  EXPORTING
    input =                      WA_/PLMU/S_RCA_LISTCOMP_HIER_UI-SORTNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMU/S_RCA_LISTCOMP_HIER_UI-SORTNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRI2, internal->external for field SUBID
CALL FUNCTION 'CONVERSION_EXIT_CHRI2_OUTPUT'
  EXPORTING
    input =                      WA_/PLMU/S_RCA_LISTCOMP_HIER_UI-SUBID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMU/S_RCA_LISTCOMP_HIER_UI-SUBID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRI2, internal->external for field PARENT_SUBID
CALL FUNCTION 'CONVERSION_EXIT_CHRI2_OUTPUT'
  EXPORTING
    input =                      WA_/PLMU/S_RCA_LISTCOMP_HIER_UI-PARENT_SUBID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMU/S_RCA_LISTCOMP_HIER_UI-PARENT_SUBID.
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_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR, 
RCP_GUID TYPE STRING,
REF_RCP TYPE STRING,
CALC_ID TYPE STRING,
SORTNO TYPE STRING,
ITEM_GUID TYPE STRING,
POSNR TYPE STRING,
SUBID TYPE STRING,
SUBRECN TYPE STRING,
SUBID_DESCR_1 TYPE STRING,
SUBID_DESCR_2 TYPE STRING,
COMP_TYPE TYPE STRING,
COMP_TYPE_DESCR TYPE STRING,
COMPTGT_CALC TYPE STRING,
COMPTGT_CALC_PRINT TYPE STRING,
EXCVAL_CALC TYPE STRING,
EXCVAL_CALC_TXT TYPE STRING,
COMPTGT_SPEC TYPE STRING,
COMPTGT_SPEC_PRINT TYPE STRING,
EXCVAL_SPEC TYPE STRING,
EXCVAL_SPEC_TXT TYPE STRING,
FLG_PO TYPE STRING,
COMPTGT_ADJ TYPE STRING,
RATING TYPE STRING,
VALIDITY_AREA TYPE STRING,
STD_COMP TYPE STRING,
LINE_PROP TYPE STRING,
PROP_SPEC_READ TYPE STRING,
RFO_GUID TYPE STRING,
PARENT_RFO_GUID TYPE STRING,
PARENT_SUBID TYPE STRING,
PARENT_SUBRECN TYPE STRING,
PARENT_COMP_TYPE TYPE STRING,
IS_LEAF TYPE STRING,
EXPANDED TYPE STRING,
ROW_KEY TYPE STRING,
PARENT_ROW_KEY TYPE STRING,
CELL_DESIGN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_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_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-RCP_GUID sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-REF_RCP sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-CALC_ID sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-SORTNO sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-ITEM_GUID sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-POSNR sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-SUBID sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-SUBRECN sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-SUBID_DESCR_1 sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-SUBID_DESCR_2 sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-COMP_TYPE sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-COMP_TYPE_DESCR sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-COMPTGT_CALC sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-COMPTGT_CALC_PRINT sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-EXCVAL_CALC sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-EXCVAL_CALC_TXT sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-COMPTGT_SPEC sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-COMPTGT_SPEC_PRINT sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-EXCVAL_SPEC sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-EXCVAL_SPEC_TXT sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-FLG_PO sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-COMPTGT_ADJ sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-RATING sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-VALIDITY_AREA sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-STD_COMP sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-LINE_PROP sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-PROP_SPEC_READ sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-RFO_GUID sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-PARENT_RFO_GUID sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-PARENT_SUBID sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-PARENT_SUBRECN sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-PARENT_COMP_TYPE sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-IS_LEAF sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-EXPANDED sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-ROW_KEY sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-PARENT_ROW_KEY sy-vline 
WA_/PLMU/S_RCA_LISTCOMP_HIER_UI_STR-CELL_DESIGN sy-vline      INTO ld_text SEPARATED BY SPACE.

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