ABAP Select data from SAP table RLCPP 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 RLCPP 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 RLCPP. 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 RLCPP 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_RLCPP TYPE STANDARD TABLE OF RLCPP,
      WA_RLCPP TYPE RLCPP,
      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: <RLCPP> TYPE RLCPP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RLCPP
*  INTO TABLE @DATA(IT_RLCPP2).
*--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_RLCPP INDEX 1 INTO DATA(WA_RLCPP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RLCPP>-FAOFF = 1.
<RLCPP>-TBOFF = 1.
<RLCPP>-FASUM = 1.
<RLCPP>-TBSUM = 1.
<RLCPP>-VERME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RLCPP-EINME, sy-vline,
  WA_RLCPP-AUSME, sy-vline,
  WA_RLCPP-LPLME, sy-vline,
  WA_RLCPP-OFMNG, sy-vline,
  WA_RLCPP-FVMNG, sy-vline,
  WA_RLCPP-RSMNG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RLCPP 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_RLCPP 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_RLCPP INTO WA_RLCPP.


*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 MATN1, internal->external for field MATNL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RLCPP-MATNL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLCPP-MATNL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNH
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RLCPP-MATNH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLCPP-MATNH.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field AUFNH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RLCPP-AUFNH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLCPP-AUFNH.
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_RLCPP_STR, 
FAOFF TYPE STRING,
TBOFF TYPE STRING,
FASUM TYPE STRING,
TBSUM TYPE STRING,
VERME TYPE STRING,
EINME TYPE STRING,
AUSME TYPE STRING,
LPLME TYPE STRING,
OFMNG TYPE STRING,
FVMNG TYPE STRING,
RSMNG TYPE STRING,
NUR_1 TYPE STRING,
SELKZ TYPE STRING,
VIEW_ TYPE STRING,
PROTO TYPE STRING,
ARBPL TYPE STRING,
PREPA TYPE STRING,
INITT TYPE STRING,
CHNGE TYPE STRING,
NREAD TYPE STRING,
RESTM TYPE STRING,
EINZL TYPE STRING,
PROAN TYPE STRING,
PROZM TYPE STRING,
MNGAN TYPE STRING,
GMENG TYPE STRING,
PFKEY TYPE STRING,
DYNNR TYPE STRING,
SIMUL TYPE STRING,
DCALL TYPE STRING,
SET TYPE STRING,
GET TYPE STRING,
AUTOP TYPE STRING,
SICHERN TYPE STRING,
GETAN TYPE STRING,
DUNKL TYPE STRING,
NORES TYPE STRING,
HELL TYPE STRING,
ALLES TYPE STRING,
COPRT TYPE STRING,
NOINR TYPE STRING,
WMMNG TYPE STRING,
MATNL TYPE STRING,
MATNH TYPE STRING,
AUFNL TYPE STRING,
AUFNH TYPE STRING,
BDTEL TYPE STRING,
BDTEH TYPE STRING,
QPMNG TYPE STRING,
VERBU TYPE STRING,
LPLTB TYPE STRING,
BINOK TYPE STRING,
MAILK TYPE STRING,
DIRTA TYPE STRING,
MEALT TYPE STRING,
MEBAS TYPE STRING,
MELVS TYPE STRING,
LPLMA TYPE STRING,
FASUA TYPE STRING,
RELEV TYPE STRING,
LGORT TYPE STRING,
KZTBV TYPE STRING,
KZBMG TYPE STRING,
SPLKZ TYPE STRING,
KZMNG TYPE STRING,
WADEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RLCPP_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_RLCPP_STR-FAOFF sy-vline 
WA_RLCPP_STR-TBOFF sy-vline 
WA_RLCPP_STR-FASUM sy-vline 
WA_RLCPP_STR-TBSUM sy-vline 
WA_RLCPP_STR-VERME sy-vline 
WA_RLCPP_STR-EINME sy-vline 
WA_RLCPP_STR-AUSME sy-vline 
WA_RLCPP_STR-LPLME sy-vline 
WA_RLCPP_STR-OFMNG sy-vline 
WA_RLCPP_STR-FVMNG sy-vline 
WA_RLCPP_STR-RSMNG sy-vline 
WA_RLCPP_STR-NUR_1 sy-vline 
WA_RLCPP_STR-SELKZ sy-vline 
WA_RLCPP_STR-VIEW_ sy-vline 
WA_RLCPP_STR-PROTO sy-vline 
WA_RLCPP_STR-ARBPL sy-vline 
WA_RLCPP_STR-PREPA sy-vline 
WA_RLCPP_STR-INITT sy-vline 
WA_RLCPP_STR-CHNGE sy-vline 
WA_RLCPP_STR-NREAD sy-vline 
WA_RLCPP_STR-RESTM sy-vline 
WA_RLCPP_STR-EINZL sy-vline 
WA_RLCPP_STR-PROAN sy-vline 
WA_RLCPP_STR-PROZM sy-vline 
WA_RLCPP_STR-MNGAN sy-vline 
WA_RLCPP_STR-GMENG sy-vline 
WA_RLCPP_STR-PFKEY sy-vline 
WA_RLCPP_STR-DYNNR sy-vline 
WA_RLCPP_STR-SIMUL sy-vline 
WA_RLCPP_STR-DCALL sy-vline 
WA_RLCPP_STR-SET sy-vline 
WA_RLCPP_STR-GET sy-vline 
WA_RLCPP_STR-AUTOP sy-vline 
WA_RLCPP_STR-SICHERN sy-vline 
WA_RLCPP_STR-GETAN sy-vline 
WA_RLCPP_STR-DUNKL sy-vline 
WA_RLCPP_STR-NORES sy-vline 
WA_RLCPP_STR-HELL sy-vline 
WA_RLCPP_STR-ALLES sy-vline 
WA_RLCPP_STR-COPRT sy-vline 
WA_RLCPP_STR-NOINR sy-vline 
WA_RLCPP_STR-WMMNG sy-vline 
WA_RLCPP_STR-MATNL sy-vline 
WA_RLCPP_STR-MATNH sy-vline 
WA_RLCPP_STR-AUFNL sy-vline 
WA_RLCPP_STR-AUFNH sy-vline 
WA_RLCPP_STR-BDTEL sy-vline 
WA_RLCPP_STR-BDTEH sy-vline 
WA_RLCPP_STR-QPMNG sy-vline 
WA_RLCPP_STR-VERBU sy-vline 
WA_RLCPP_STR-LPLTB sy-vline 
WA_RLCPP_STR-BINOK sy-vline 
WA_RLCPP_STR-MAILK sy-vline 
WA_RLCPP_STR-DIRTA sy-vline 
WA_RLCPP_STR-MEALT sy-vline 
WA_RLCPP_STR-MEBAS sy-vline 
WA_RLCPP_STR-MELVS sy-vline 
WA_RLCPP_STR-LPLMA sy-vline 
WA_RLCPP_STR-FASUA sy-vline 
WA_RLCPP_STR-RELEV sy-vline 
WA_RLCPP_STR-LGORT sy-vline 
WA_RLCPP_STR-KZTBV sy-vline 
WA_RLCPP_STR-KZBMG sy-vline 
WA_RLCPP_STR-SPLKZ sy-vline 
WA_RLCPP_STR-KZMNG sy-vline 
WA_RLCPP_STR-WADEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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