ABAP Select data from SAP table RECE_PROCESS_REVERSAL_L into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECE_PROCESS_REVERSAL_L
*  INTO TABLE @DATA(IT_RECE_PROCESS_REVERSAL_L2).
*--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_RECE_PROCESS_REVERSAL_L INDEX 1 INTO DATA(WA_RECE_PROCESS_REVERSAL_L2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECE_PROCESS_REVERSAL_L>-MANDT = 1.
<RECE_PROCESS_REVERSAL_L>-INTRENO = 1.
<RECE_PROCESS_REVERSAL_L>-RULEGUID = 1.
<RECE_PROCESS_REVERSAL_L>-PROCESSGUID = 1.
<RECE_PROCESS_REVERSAL_L>-PROCESSGUIDPREVIOUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECE_PROCESS_REVERSAL_L-TERMNO, sy-vline,
  WA_RECE_PROCESS_REVERSAL_L-PROCESSREASON, sy-vline,
  WA_RECE_PROCESS_REVERSAL_L-PROCESSBEHAVIOR, sy-vline,
  WA_RECE_PROCESS_REVERSAL_L-CEFROM, sy-vline,
  WA_RECE_PROCESS_REVERSAL_L-PROCESSNOTE, sy-vline,
  WA_RECE_PROCESS_REVERSAL_L-CNVALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECE_PROCESS_REVERSAL_L 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_RECE_PROCESS_REVERSAL_L 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_RECE_PROCESS_REVERSAL_L INTO WA_RECE_PROCESS_REVERSAL_L.


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

*Conversion exit REDAT, internal->external for field PROBABLEEND
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RECE_PROCESS_REVERSAL_L-PROBABLEEND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECE_PROCESS_REVERSAL_L-PROBABLEEND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field ABSOLUTEEND
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RECE_PROCESS_REVERSAL_L-ABSOLUTEEND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECE_PROCESS_REVERSAL_L-ABSOLUTEEND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NUMBERRCN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RECE_PROCESS_REVERSAL_L-NUMBERRCN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECE_PROCESS_REVERSAL_L-NUMBERRCN.
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_RECE_PROCESS_REVERSAL_L_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
RULEGUID TYPE STRING,
PROCESSGUID TYPE STRING,
PROCESSGUIDPREVIOUS TYPE STRING,
TERMNO TYPE STRING,
PROCESSREASON TYPE STRING,
PROCESSBEHAVIOR TYPE STRING,
CEFROM TYPE STRING,
PROCESSNOTE TYPE STRING,
CNVALUE TYPE STRING,
NPV TYPE STRING,
REMAININGCAPITAL TYPE STRING,
CURR TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
ISINITIALPROCESS TYPE STRING,
SLBEGIN TYPE STRING,
SLPAYMENT TYPE STRING,
PROBABLEEND TYPE STRING,
ABSOLUTEEND TYPE STRING,
VALUATIONENGINE TYPE STRING,
PROCESSEXTID TYPE STRING,
PROCESSSTEPNO TYPE STRING,
PROCESSSTEPNOMAX TYPE STRING,
STATUSRULE TYPE STRING,
XSTATUSRULE TYPE STRING,
STATUSEVALUATION TYPE STRING,
XSTATUSEVALUATION TYPE STRING,
XPROCESSREASON TYPE STRING,
XPROCESSBEHAVIOR TYPE STRING,
CETYPEAUTOEVAL TYPE STRING,
CERULE TYPE STRING,
XCERULE TYPE STRING,
CONSBEG TYPE STRING,
BOOKED TYPE STRING,
BOOKED_REAL TYPE STRING,
BOOKED_SUPPORT TYPE STRING,
BOOKED_MARK TYPE STRING,
NONE_POSITION TYPE STRING,
BOOKED_INFO TYPE STRING,
IDENTOBJEVAL TYPE STRING,
ICON_DETAIL TYPE STRING,
ICON_STATUSRULE TYPE STRING,
ICON_STATUSEVALUATION TYPE STRING,
ICON_BOOKED TYPE STRING,
COLORTAB TYPE STRING,
STYLETAB TYPE STRING,
ICON_EVALUATION TYPE STRING,
ICON_PROTOCOL TYPE STRING,
IDENTCN TYPE STRING,
BUKRSCN TYPE STRING,
NUMBERRCN TYPE STRING,
TEXTCN TYPE STRING,
ROUASSETVALUE TYPE STRING,
REVERSAL_ALLOWED TYPE STRING,
REVERSE TYPE STRING,
ICON_STATUSRULEEVAL TYPE STRING,
INCL_INITIAL_PROCESS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECE_PROCESS_REVERSAL_L_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_RECE_PROCESS_REVERSAL_L_STR-MANDT sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-INTRENO sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-RULEGUID sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-PROCESSGUID sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-PROCESSGUIDPREVIOUS sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-TERMNO sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-PROCESSREASON sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-PROCESSBEHAVIOR sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-CEFROM sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-PROCESSNOTE sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-CNVALUE sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-NPV sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-REMAININGCAPITAL sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-CURR sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-RERF sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-DERF sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-TERF sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-REHER sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-RBEAR sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-DBEAR sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-TBEAR sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-RBHER sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-ISINITIALPROCESS sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-SLBEGIN sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-SLPAYMENT sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-PROBABLEEND sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-ABSOLUTEEND sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-VALUATIONENGINE sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-PROCESSEXTID sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-PROCESSSTEPNO sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-PROCESSSTEPNOMAX sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-STATUSRULE sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-XSTATUSRULE sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-STATUSEVALUATION sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-XSTATUSEVALUATION sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-XPROCESSREASON sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-XPROCESSBEHAVIOR sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-CETYPEAUTOEVAL sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-CERULE sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-XCERULE sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-CONSBEG sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-BOOKED sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-BOOKED_REAL sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-BOOKED_SUPPORT sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-BOOKED_MARK sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-NONE_POSITION sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-BOOKED_INFO sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-IDENTOBJEVAL sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-ICON_DETAIL sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-ICON_STATUSRULE sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-ICON_STATUSEVALUATION sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-ICON_BOOKED sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-COLORTAB sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-STYLETAB sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-ICON_EVALUATION sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-ICON_PROTOCOL sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-IDENTCN sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-BUKRSCN sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-NUMBERRCN sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-TEXTCN sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-ROUASSETVALUE sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-REVERSAL_ALLOWED sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-REVERSE sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-ICON_STATUSRULEEVAL sy-vline 
WA_RECE_PROCESS_REVERSAL_L_STR-INCL_INITIAL_PROCESS sy-vline      INTO ld_text SEPARATED BY SPACE.

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