ABAP Select data from SAP table REXCITIRE_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCITIRE_S
*  INTO TABLE @DATA(IT_REXCITIRE_S2).
*--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_REXCITIRE_S INDEX 1 INTO DATA(WA_REXCITIRE_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCITIRE_S>-MANDT = 1.
<REXCITIRE_S>-INTRENO = 1.
<REXCITIRE_S>-BILLDATE = 1.
<REXCITIRE_S>-CURRENCY = 1.
<REXCITIRE_S>-IRECALCTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCITIRE_S-RENTAL, sy-vline,
  WA_REXCITIRE_S-RTAXAMOUNT, sy-vline,
  WA_REXCITIRE_S-IREPERCENT, sy-vline,
  WA_REXCITIRE_S-REDPERCENT, sy-vline,
  WA_REXCITIRE_S-IREAMOUNT, sy-vline,
  WA_REXCITIRE_S-ISPAYB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCITIRE_S 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_REXCITIRE_S 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_REXCITIRE_S INTO WA_REXCITIRE_S.


*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 LOGSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REXCITIRE_S-LOGSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCITIRE_S-LOGSYSTEM.
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_REXCITIRE_S_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
BILLDATE TYPE STRING,
CURRENCY TYPE STRING,
IRECALCTYPE TYPE STRING,
RENTAL TYPE STRING,
RTAXAMOUNT TYPE STRING,
IREPERCENT TYPE STRING,
REDPERCENT TYPE STRING,
IREAMOUNT TYPE STRING,
ISPAYB TYPE STRING,
IREPAYB TYPE STRING,
PERCENPAYB TYPE STRING,
XACCPOS TYPE STRING,
ISACTIVE TYPE STRING,
PSTDATE TYPE STRING,
TCODE1 TYPE STRING,
TYEAR TYPE STRING,
TCODE2 TYPE STRING,
TCODE3 TYPE STRING,
TYEARX TYPE STRING,
IREOFFVALUE TYPE STRING,
REFDOCTYPE TYPE STRING,
REFDOCID TYPE STRING,
LOGSYSTEM TYPE STRING,
ISCANCELED TYPE STRING,
TERMMONTHS TYPE STRING,
TAXCODE2AMOUNT TYPE STRING,
TAXCODE3AMOUNT TYPE STRING,
ISPAYB_2 TYPE STRING,
ISPAYB_3 TYPE STRING,
ISPAYB_OFF_VALUE TYPE STRING,
ISSUMM_1 TYPE STRING,
ISSUMM_2 TYPE STRING,
ISSUMM_3 TYPE STRING,
ISSUMM_OFF_VALUE TYPE STRING,
IRERENTAXAMOUNT TYPE STRING,
PAYBACK1RATE TYPE STRING,
PAYBACK2RATE TYPE STRING,
PAYBACK3RATE TYPE STRING,
PAYBACKRRATE TYPE STRING,
TRANSFER TYPE STRING,
OBJRENTALCODE TYPE STRING,
ONETIMEDEDUCAM TYPE STRING,
ISONETIMEPYMNT TYPE STRING,
CFPAYGUID_PB1 TYPE STRING,
CFPAYGUID_PB2 TYPE STRING,
CFPAYGUID_PB3 TYPE STRING,
CFPAYGUID_PB_RO TYPE STRING,
DTREG TYPE STRING,
SERIE TYPE STRING,
NRREG TYPE STRING,
REGOFF TYPE STRING,
IRESTART TYPE STRING,
IRECALC TYPE STRING,
XREGOFF TYPE STRING,
XIRETAXCODE1 TYPE STRING,
XIRETAXCODE2 TYPE STRING,
XIRETAXCODE3 TYPE STRING,
XIRECALCTYPE TYPE STRING,
XTYEAR TYPE STRING,
SELINDEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXCITIRE_S_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_REXCITIRE_S_STR-MANDT sy-vline 
WA_REXCITIRE_S_STR-INTRENO sy-vline 
WA_REXCITIRE_S_STR-BILLDATE sy-vline 
WA_REXCITIRE_S_STR-CURRENCY sy-vline 
WA_REXCITIRE_S_STR-IRECALCTYPE sy-vline 
WA_REXCITIRE_S_STR-RENTAL sy-vline 
WA_REXCITIRE_S_STR-RTAXAMOUNT sy-vline 
WA_REXCITIRE_S_STR-IREPERCENT sy-vline 
WA_REXCITIRE_S_STR-REDPERCENT sy-vline 
WA_REXCITIRE_S_STR-IREAMOUNT sy-vline 
WA_REXCITIRE_S_STR-ISPAYB sy-vline 
WA_REXCITIRE_S_STR-IREPAYB sy-vline 
WA_REXCITIRE_S_STR-PERCENPAYB sy-vline 
WA_REXCITIRE_S_STR-XACCPOS sy-vline 
WA_REXCITIRE_S_STR-ISACTIVE sy-vline 
WA_REXCITIRE_S_STR-PSTDATE sy-vline 
WA_REXCITIRE_S_STR-TCODE1 sy-vline 
WA_REXCITIRE_S_STR-TYEAR sy-vline 
WA_REXCITIRE_S_STR-TCODE2 sy-vline 
WA_REXCITIRE_S_STR-TCODE3 sy-vline 
WA_REXCITIRE_S_STR-TYEARX sy-vline 
WA_REXCITIRE_S_STR-IREOFFVALUE sy-vline 
WA_REXCITIRE_S_STR-REFDOCTYPE sy-vline 
WA_REXCITIRE_S_STR-REFDOCID sy-vline 
WA_REXCITIRE_S_STR-LOGSYSTEM sy-vline 
WA_REXCITIRE_S_STR-ISCANCELED sy-vline 
WA_REXCITIRE_S_STR-TERMMONTHS sy-vline 
WA_REXCITIRE_S_STR-TAXCODE2AMOUNT sy-vline 
WA_REXCITIRE_S_STR-TAXCODE3AMOUNT sy-vline 
WA_REXCITIRE_S_STR-ISPAYB_2 sy-vline 
WA_REXCITIRE_S_STR-ISPAYB_3 sy-vline 
WA_REXCITIRE_S_STR-ISPAYB_OFF_VALUE sy-vline 
WA_REXCITIRE_S_STR-ISSUMM_1 sy-vline 
WA_REXCITIRE_S_STR-ISSUMM_2 sy-vline 
WA_REXCITIRE_S_STR-ISSUMM_3 sy-vline 
WA_REXCITIRE_S_STR-ISSUMM_OFF_VALUE sy-vline 
WA_REXCITIRE_S_STR-IRERENTAXAMOUNT sy-vline 
WA_REXCITIRE_S_STR-PAYBACK1RATE sy-vline 
WA_REXCITIRE_S_STR-PAYBACK2RATE sy-vline 
WA_REXCITIRE_S_STR-PAYBACK3RATE sy-vline 
WA_REXCITIRE_S_STR-PAYBACKRRATE sy-vline 
WA_REXCITIRE_S_STR-TRANSFER sy-vline 
WA_REXCITIRE_S_STR-OBJRENTALCODE sy-vline 
WA_REXCITIRE_S_STR-ONETIMEDEDUCAM sy-vline 
WA_REXCITIRE_S_STR-ISONETIMEPYMNT sy-vline 
WA_REXCITIRE_S_STR-CFPAYGUID_PB1 sy-vline 
WA_REXCITIRE_S_STR-CFPAYGUID_PB2 sy-vline 
WA_REXCITIRE_S_STR-CFPAYGUID_PB3 sy-vline 
WA_REXCITIRE_S_STR-CFPAYGUID_PB_RO sy-vline 
WA_REXCITIRE_S_STR-DTREG sy-vline 
WA_REXCITIRE_S_STR-SERIE sy-vline 
WA_REXCITIRE_S_STR-NRREG sy-vline 
WA_REXCITIRE_S_STR-REGOFF sy-vline 
WA_REXCITIRE_S_STR-IRESTART sy-vline 
WA_REXCITIRE_S_STR-IRECALC sy-vline 
WA_REXCITIRE_S_STR-XREGOFF sy-vline 
WA_REXCITIRE_S_STR-XIRETAXCODE1 sy-vline 
WA_REXCITIRE_S_STR-XIRETAXCODE2 sy-vline 
WA_REXCITIRE_S_STR-XIRETAXCODE3 sy-vline 
WA_REXCITIRE_S_STR-XIRECALCTYPE sy-vline 
WA_REXCITIRE_S_STR-XTYEAR sy-vline 
WA_REXCITIRE_S_STR-SELINDEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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