ABAP Select data from SAP table RPCIXXXX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPCIXXXX
*  INTO TABLE @DATA(IT_RPCIXXXX2).
*--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_RPCIXXXX INDEX 1 INTO DATA(WA_RPCIXXXX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPCIXXXX>-DATASET = 1.
<RPCIXXXX>-SEK_DAT = 1.
<RPCIXXXX>-OUTDATA = 1.
<RPCIXXXX>-MESS_DA = 1.
<RPCIXXXX>-R_PCL1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPCIXXXX-R_PCL2, sy-vline,
  WA_RPCIXXXX-R_PREL, sy-vline,
  WA_RPCIXXXX-R_WTYP, sy-vline,
  WA_RPCIXXXX-S_DIFF, sy-vline,
  WA_RPCIXXXX-DATASET2, sy-vline,
  WA_RPCIXXXX-DSN01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPCIXXXX 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_RPCIXXXX 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_RPCIXXXX INTO WA_RPCIXXXX.


*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_RPCIXXXX_STR, 
DATASET TYPE STRING,
SEK_DAT TYPE STRING,
OUTDATA TYPE STRING,
MESS_DA TYPE STRING,
R_PCL1 TYPE STRING,
R_PCL2 TYPE STRING,
R_PREL TYPE STRING,
R_WTYP TYPE STRING,
S_DIFF TYPE STRING,
DATASET2 TYPE STRING,
DSN01 TYPE STRING,
BELSPLIT TYPE STRING,
REFERENZ TYPE STRING,
MAXBEL TYPE STRING,
HV053 TYPE STRING,
GROUP_RP TYPE STRING,
USER_RP TYPE STRING,
REL_RP TYPE STRING,
BUKRSMON TYPE STRING,
BELSPLIT2 TYPE STRING,
D_KTOPLKTO TYPE STRING,
CO_SPLIT TYPE STRING,
CO_BATCH TYPE STRING,
SEQ_OUT TYPE STRING,
SRCE_SYS TYPE STRING,
CONVERT TYPE STRING,
SRCE_TYP TYPE STRING,
MANDT_43 TYPE STRING,
STCOL TYPE STRING,
LINCT TYPE STRING,
TSTLVL TYPE STRING,
FILEVERS TYPE STRING,
PMBEGDA TYPE STRING,
P_ARCHI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPCIXXXX_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_RPCIXXXX_STR-DATASET sy-vline 
WA_RPCIXXXX_STR-SEK_DAT sy-vline 
WA_RPCIXXXX_STR-OUTDATA sy-vline 
WA_RPCIXXXX_STR-MESS_DA sy-vline 
WA_RPCIXXXX_STR-R_PCL1 sy-vline 
WA_RPCIXXXX_STR-R_PCL2 sy-vline 
WA_RPCIXXXX_STR-R_PREL sy-vline 
WA_RPCIXXXX_STR-R_WTYP sy-vline 
WA_RPCIXXXX_STR-S_DIFF sy-vline 
WA_RPCIXXXX_STR-DATASET2 sy-vline 
WA_RPCIXXXX_STR-DSN01 sy-vline 
WA_RPCIXXXX_STR-BELSPLIT sy-vline 
WA_RPCIXXXX_STR-REFERENZ sy-vline 
WA_RPCIXXXX_STR-MAXBEL sy-vline 
WA_RPCIXXXX_STR-HV053 sy-vline 
WA_RPCIXXXX_STR-GROUP_RP sy-vline 
WA_RPCIXXXX_STR-USER_RP sy-vline 
WA_RPCIXXXX_STR-REL_RP sy-vline 
WA_RPCIXXXX_STR-BUKRSMON sy-vline 
WA_RPCIXXXX_STR-BELSPLIT2 sy-vline 
WA_RPCIXXXX_STR-D_KTOPLKTO sy-vline 
WA_RPCIXXXX_STR-CO_SPLIT sy-vline 
WA_RPCIXXXX_STR-CO_BATCH sy-vline 
WA_RPCIXXXX_STR-SEQ_OUT sy-vline 
WA_RPCIXXXX_STR-SRCE_SYS sy-vline 
WA_RPCIXXXX_STR-CONVERT sy-vline 
WA_RPCIXXXX_STR-SRCE_TYP sy-vline 
WA_RPCIXXXX_STR-MANDT_43 sy-vline 
WA_RPCIXXXX_STR-STCOL sy-vline 
WA_RPCIXXXX_STR-LINCT sy-vline 
WA_RPCIXXXX_STR-TSTLVL sy-vline 
WA_RPCIXXXX_STR-FILEVERS sy-vline 
WA_RPCIXXXX_STR-PMBEGDA sy-vline 
WA_RPCIXXXX_STR-P_ARCHI sy-vline      INTO ld_text SEPARATED BY SPACE.

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