ABAP Select data from SAP table RCPS_IDL_STAGE_ASSGN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCPS_IDL_STAGE_ASSGN
*  INTO TABLE @DATA(IT_RCPS_IDL_STAGE_ASSGN2).
*--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_RCPS_IDL_STAGE_ASSGN INDEX 1 INTO DATA(WA_RCPS_IDL_STAGE_ASSGN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCPS_IDL_STAGE_ASSGN>-STAGE = 1.
<RCPS_IDL_STAGE_ASSGN>-STAGE_OLD = 1.
<RCPS_IDL_STAGE_ASSGN>-STAGE_HEADER = 1.
<RCPS_IDL_STAGE_ASSGN>-DEL_FLG = 1.
<RCPS_IDL_STAGE_ASSGN>-STAGE_SHORT_TEXT_TAB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCPS_IDL_STAGE_ASSGN-STAGE_LONG_TEXT_TAB, sy-vline,
  WA_RCPS_IDL_STAGE_ASSGN-OPERATION_ASSGN_TAB, sy-vline,
  WA_RCPS_IDL_STAGE_ASSGN-STAGE_FORMULA, sy-vline,
  WA_RCPS_IDL_STAGE_ASSGN-LOSS_PERCENTAGE, sy-vline,
  WA_RCPS_IDL_STAGE_ASSGN-STAGE_FRML_HEADER, sy-vline,
  WA_RCPS_IDL_STAGE_ASSGN-LOTSIZE_MIN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCPS_IDL_STAGE_ASSGN 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_RCPS_IDL_STAGE_ASSGN 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_RCPS_IDL_STAGE_ASSGN INTO WA_RCPS_IDL_STAGE_ASSGN.


*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 UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RCPS_IDL_STAGE_ASSGN-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCPS_IDL_STAGE_ASSGN-UNIT.
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_RCPS_IDL_STAGE_ASSGN_STR, 
STAGE TYPE STRING,
STAGE_OLD TYPE STRING,
STAGE_HEADER TYPE STRING,
DEL_FLG TYPE STRING,
STAGE_SHORT_TEXT_TAB TYPE STRING,
STAGE_LONG_TEXT_TAB TYPE STRING,
OPERATION_ASSGN_TAB TYPE STRING,
STAGE_FORMULA TYPE STRING,
LOSS_PERCENTAGE TYPE STRING,
STAGE_FRML_HEADER TYPE STRING,
LOTSIZE_MIN TYPE STRING,
LOTSIZE_MAX TYPE STRING,
BASE_QUAN TYPE STRING,
INP_TGT_QTY TYPE STRING,
UNIT TYPE STRING,
CONS_FLG TYPE STRING,
REAC_FLG TYPE STRING,
EVAP_FLG TYPE STRING,
LAYOUT TYPE STRING,
KEY_FIGURE_GROUP TYPE STRING,
STAGE_FRML_OUTPUT_STREAM TYPE STRING,
POSNR TYPE STRING,
ROLE TYPE STRING,
STRM_TEXT TYPE STRING,
STAGE_FRML_OUT_STREAM_TXT_TAB TYPE STRING,
STAGE_FRML_ITEM_TAB TYPE STRING,
STAGE_FRML_ITEM_POB_ASSGN_TAB TYPE STRING,
STAGE_EQR_TAB TYPE STRING,
STAGE_PROCESS_PARAM_TAB TYPE STRING,
STAGE_DOCUMENT_TAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCPS_IDL_STAGE_ASSGN_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_RCPS_IDL_STAGE_ASSGN_STR-STAGE sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STAGE_OLD sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STAGE_HEADER sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-DEL_FLG sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STAGE_SHORT_TEXT_TAB sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STAGE_LONG_TEXT_TAB sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-OPERATION_ASSGN_TAB sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STAGE_FORMULA sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-LOSS_PERCENTAGE sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STAGE_FRML_HEADER sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-LOTSIZE_MIN sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-LOTSIZE_MAX sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-BASE_QUAN sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-INP_TGT_QTY sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-UNIT sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-CONS_FLG sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-REAC_FLG sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-EVAP_FLG sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-LAYOUT sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-KEY_FIGURE_GROUP sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STAGE_FRML_OUTPUT_STREAM sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-POSNR sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-ROLE sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STRM_TEXT sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STAGE_FRML_OUT_STREAM_TXT_TAB sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STAGE_FRML_ITEM_TAB sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STAGE_FRML_ITEM_POB_ASSGN_TAB sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STAGE_EQR_TAB sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STAGE_PROCESS_PARAM_TAB sy-vline 
WA_RCPS_IDL_STAGE_ASSGN_STR-STAGE_DOCUMENT_TAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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