ABAP Select data from SAP table RPCXXXPT into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RPCXXXPT 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 RPCXXXPT. 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 RPCXXXPT 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_RPCXXXPT TYPE STANDARD TABLE OF RPCXXXPT,
      WA_RPCXXXPT TYPE RPCXXXPT,
      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: <RPCXXXPT> TYPE RPCXXXPT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPCXXXPT
*  INTO TABLE @DATA(IT_RPCXXXPT2).
*--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_RPCXXXPT INDEX 1 INTO DATA(WA_RPCXXXPT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPCXXXPT>-PFORM = 1.
<RPCXXXPT>-TELOG = 1.
<RPCXXXPT>-PFILE = 1.
<RPCXXXPT>-PRIMD = 1.
<RPCXXXPT>-MODIF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPCXXXPT-RETFI, sy-vline,
  WA_RPCXXXPT-MDL10, sy-vline,
  WA_RPCXXXPT-ATCHJ, sy-vline,
  WA_RPCXXXPT-CLSTR, sy-vline,
  WA_RPCXXXPT-LDRES, sy-vline,
  WA_RPCXXXPT-RDIFS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPCXXXPT 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_RPCXXXPT 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_RPCXXXPT INTO WA_RPCXXXPT.


*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 GJAHR, internal->external for field LMTYE
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RPCXXXPT-LMTYE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPCXXXPT-LMTYE.
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_RPCXXXPT_STR, 
PFORM TYPE STRING,
TELOG TYPE STRING,
PFILE TYPE STRING,
PRIMD TYPE STRING,
MODIF TYPE STRING,
RETFI TYPE STRING,
MDL10 TYPE STRING,
ATCHJ TYPE STRING,
CLSTR TYPE STRING,
LDRES TYPE STRING,
RDIFS TYPE STRING,
EARNG TYPE STRING,
WKSCH TYPE STRING,
SEMT1 TYPE STRING,
SEMT2 TYPE STRING,
BSCNT TYPE STRING,
SITUA TYPE STRING,
LMTLO TYPE STRING,
LMTHI TYPE STRING,
PENSR TYPE STRING,
TDAYS TYPE STRING,
TNDEP TYPE STRING,
NTXSU TYPE STRING,
REINC TYPE STRING,
VACLW TYPE STRING,
CHRLW TYPE STRING,
PYINC TYPE STRING,
COPAG TYPE STRING,
STINF TYPE STRING,
CTPAR TYPE STRING,
LVDAT TYPE STRING,
CAREV TYPE STRING,
TMDAT TYPE STRING,
ABSDA TYPE STRING,
PERCO TYPE STRING,
HYSAF TYPE STRING,
TRNDA TYPE STRING,
SOCPR TYPE STRING,
SETDA TYPE STRING,
OVREC TYPE STRING,
DELRE TYPE STRING,
LEACY TYPE STRING,
COABS TYPE STRING,
COWKS TYPE STRING,
PRS93 TYPE STRING,
PRS00 TYPE STRING,
PRS03 TYPE STRING,
COEUR TYPE STRING,
LMTYE TYPE STRING,
LMTMO TYPE STRING,
OLDTX TYPE STRING,
TRFCO TYPE STRING,
MD10J TYPE STRING,
INCOV TYPE STRING,
SSINS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPCXXXPT_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_RPCXXXPT_STR-PFORM sy-vline 
WA_RPCXXXPT_STR-TELOG sy-vline 
WA_RPCXXXPT_STR-PFILE sy-vline 
WA_RPCXXXPT_STR-PRIMD sy-vline 
WA_RPCXXXPT_STR-MODIF sy-vline 
WA_RPCXXXPT_STR-RETFI sy-vline 
WA_RPCXXXPT_STR-MDL10 sy-vline 
WA_RPCXXXPT_STR-ATCHJ sy-vline 
WA_RPCXXXPT_STR-CLSTR sy-vline 
WA_RPCXXXPT_STR-LDRES sy-vline 
WA_RPCXXXPT_STR-RDIFS sy-vline 
WA_RPCXXXPT_STR-EARNG sy-vline 
WA_RPCXXXPT_STR-WKSCH sy-vline 
WA_RPCXXXPT_STR-SEMT1 sy-vline 
WA_RPCXXXPT_STR-SEMT2 sy-vline 
WA_RPCXXXPT_STR-BSCNT sy-vline 
WA_RPCXXXPT_STR-SITUA sy-vline 
WA_RPCXXXPT_STR-LMTLO sy-vline 
WA_RPCXXXPT_STR-LMTHI sy-vline 
WA_RPCXXXPT_STR-PENSR sy-vline 
WA_RPCXXXPT_STR-TDAYS sy-vline 
WA_RPCXXXPT_STR-TNDEP sy-vline 
WA_RPCXXXPT_STR-NTXSU sy-vline 
WA_RPCXXXPT_STR-REINC sy-vline 
WA_RPCXXXPT_STR-VACLW sy-vline 
WA_RPCXXXPT_STR-CHRLW sy-vline 
WA_RPCXXXPT_STR-PYINC sy-vline 
WA_RPCXXXPT_STR-COPAG sy-vline 
WA_RPCXXXPT_STR-STINF sy-vline 
WA_RPCXXXPT_STR-CTPAR sy-vline 
WA_RPCXXXPT_STR-LVDAT sy-vline 
WA_RPCXXXPT_STR-CAREV sy-vline 
WA_RPCXXXPT_STR-TMDAT sy-vline 
WA_RPCXXXPT_STR-ABSDA sy-vline 
WA_RPCXXXPT_STR-PERCO sy-vline 
WA_RPCXXXPT_STR-HYSAF sy-vline 
WA_RPCXXXPT_STR-TRNDA sy-vline 
WA_RPCXXXPT_STR-SOCPR sy-vline 
WA_RPCXXXPT_STR-SETDA sy-vline 
WA_RPCXXXPT_STR-OVREC sy-vline 
WA_RPCXXXPT_STR-DELRE sy-vline 
WA_RPCXXXPT_STR-LEACY sy-vline 
WA_RPCXXXPT_STR-COABS sy-vline 
WA_RPCXXXPT_STR-COWKS sy-vline 
WA_RPCXXXPT_STR-PRS93 sy-vline 
WA_RPCXXXPT_STR-PRS00 sy-vline 
WA_RPCXXXPT_STR-PRS03 sy-vline 
WA_RPCXXXPT_STR-COEUR sy-vline 
WA_RPCXXXPT_STR-LMTYE sy-vline 
WA_RPCXXXPT_STR-LMTMO sy-vline 
WA_RPCXXXPT_STR-OLDTX sy-vline 
WA_RPCXXXPT_STR-TRFCO sy-vline 
WA_RPCXXXPT_STR-MD10J sy-vline 
WA_RPCXXXPT_STR-INCOV sy-vline 
WA_RPCXXXPT_STR-SSINS sy-vline      INTO ld_text SEPARATED BY SPACE.

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