ABAP Select data from SAP table REXCITIRE_L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REXCITIRE_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 REXCITIRE_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 REXCITIRE_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_REXCITIRE_L TYPE STANDARD TABLE OF REXCITIRE_L,
      WA_REXCITIRE_L TYPE REXCITIRE_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: <REXCITIRE_L> TYPE REXCITIRE_L.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCITIRE_L
*  INTO TABLE @DATA(IT_REXCITIRE_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_REXCITIRE_L INDEX 1 INTO DATA(WA_REXCITIRE_L2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCITIRE_L>-RECNNR = 1.
<REXCITIRE_L>-RECNTYPE = 1.
<REXCITIRE_L>-BENOCN = 1.
<REXCITIRE_L>-BUKRS = 1.
<REXCITIRE_L>-MANDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCITIRE_L-INTRENO, sy-vline,
  WA_REXCITIRE_L-BILLDATE, sy-vline,
  WA_REXCITIRE_L-CURRENCY, sy-vline,
  WA_REXCITIRE_L-IRECALCTYPE, sy-vline,
  WA_REXCITIRE_L-RENTAL, sy-vline,
  WA_REXCITIRE_L-RTAXAMOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCITIRE_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_REXCITIRE_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_REXCITIRE_L INTO WA_REXCITIRE_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 RECNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REXCITIRE_L-RECNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCITIRE_L-RECNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SWENR, internal->external for field BENOCN
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_REXCITIRE_L-BENOCN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCITIRE_L-BENOCN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field RECDFLOWTYPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REXCITIRE_L-RECDFLOWTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCITIRE_L-RECDFLOWTYPE.
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_L_STR, 
RECNNR TYPE STRING,
RECNTYPE TYPE STRING,
BENOCN TYPE STRING,
BUKRS TYPE STRING,
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,
ALVROWS TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
RERATAXTYPE TYPE STRING,
RERATAXGROUP TYPE STRING,
RECDFLOWTYPE TYPE STRING,
HEADERTXT TYPE STRING,
CHECKBOX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXCITIRE_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_REXCITIRE_L_STR-RECNNR sy-vline 
WA_REXCITIRE_L_STR-RECNTYPE sy-vline 
WA_REXCITIRE_L_STR-BENOCN sy-vline 
WA_REXCITIRE_L_STR-BUKRS sy-vline 
WA_REXCITIRE_L_STR-MANDT sy-vline 
WA_REXCITIRE_L_STR-INTRENO sy-vline 
WA_REXCITIRE_L_STR-BILLDATE sy-vline 
WA_REXCITIRE_L_STR-CURRENCY sy-vline 
WA_REXCITIRE_L_STR-IRECALCTYPE sy-vline 
WA_REXCITIRE_L_STR-RENTAL sy-vline 
WA_REXCITIRE_L_STR-RTAXAMOUNT sy-vline 
WA_REXCITIRE_L_STR-IREPERCENT sy-vline 
WA_REXCITIRE_L_STR-REDPERCENT sy-vline 
WA_REXCITIRE_L_STR-IREAMOUNT sy-vline 
WA_REXCITIRE_L_STR-ISPAYB sy-vline 
WA_REXCITIRE_L_STR-IREPAYB sy-vline 
WA_REXCITIRE_L_STR-PERCENPAYB sy-vline 
WA_REXCITIRE_L_STR-XACCPOS sy-vline 
WA_REXCITIRE_L_STR-ISACTIVE sy-vline 
WA_REXCITIRE_L_STR-PSTDATE sy-vline 
WA_REXCITIRE_L_STR-TCODE1 sy-vline 
WA_REXCITIRE_L_STR-TYEAR sy-vline 
WA_REXCITIRE_L_STR-TCODE2 sy-vline 
WA_REXCITIRE_L_STR-TCODE3 sy-vline 
WA_REXCITIRE_L_STR-TYEARX sy-vline 
WA_REXCITIRE_L_STR-IREOFFVALUE sy-vline 
WA_REXCITIRE_L_STR-REFDOCTYPE sy-vline 
WA_REXCITIRE_L_STR-REFDOCID sy-vline 
WA_REXCITIRE_L_STR-LOGSYSTEM sy-vline 
WA_REXCITIRE_L_STR-ISCANCELED sy-vline 
WA_REXCITIRE_L_STR-TERMMONTHS sy-vline 
WA_REXCITIRE_L_STR-TAXCODE2AMOUNT sy-vline 
WA_REXCITIRE_L_STR-TAXCODE3AMOUNT sy-vline 
WA_REXCITIRE_L_STR-ISPAYB_2 sy-vline 
WA_REXCITIRE_L_STR-ISPAYB_3 sy-vline 
WA_REXCITIRE_L_STR-ISPAYB_OFF_VALUE sy-vline 
WA_REXCITIRE_L_STR-ISSUMM_1 sy-vline 
WA_REXCITIRE_L_STR-ISSUMM_2 sy-vline 
WA_REXCITIRE_L_STR-ISSUMM_3 sy-vline 
WA_REXCITIRE_L_STR-ISSUMM_OFF_VALUE sy-vline 
WA_REXCITIRE_L_STR-IRERENTAXAMOUNT sy-vline 
WA_REXCITIRE_L_STR-PAYBACK1RATE sy-vline 
WA_REXCITIRE_L_STR-PAYBACK2RATE sy-vline 
WA_REXCITIRE_L_STR-PAYBACK3RATE sy-vline 
WA_REXCITIRE_L_STR-PAYBACKRRATE sy-vline 
WA_REXCITIRE_L_STR-TRANSFER sy-vline 
WA_REXCITIRE_L_STR-OBJRENTALCODE sy-vline 
WA_REXCITIRE_L_STR-ONETIMEDEDUCAM sy-vline 
WA_REXCITIRE_L_STR-ISONETIMEPYMNT sy-vline 
WA_REXCITIRE_L_STR-CFPAYGUID_PB1 sy-vline 
WA_REXCITIRE_L_STR-CFPAYGUID_PB2 sy-vline 
WA_REXCITIRE_L_STR-CFPAYGUID_PB3 sy-vline 
WA_REXCITIRE_L_STR-CFPAYGUID_PB_RO sy-vline 
WA_REXCITIRE_L_STR-DTREG sy-vline 
WA_REXCITIRE_L_STR-SERIE sy-vline 
WA_REXCITIRE_L_STR-NRREG sy-vline 
WA_REXCITIRE_L_STR-REGOFF sy-vline 
WA_REXCITIRE_L_STR-IRESTART sy-vline 
WA_REXCITIRE_L_STR-IRECALC sy-vline 
WA_REXCITIRE_L_STR-XREGOFF sy-vline 
WA_REXCITIRE_L_STR-XIRETAXCODE1 sy-vline 
WA_REXCITIRE_L_STR-XIRETAXCODE2 sy-vline 
WA_REXCITIRE_L_STR-XIRETAXCODE3 sy-vline 
WA_REXCITIRE_L_STR-XIRECALCTYPE sy-vline 
WA_REXCITIRE_L_STR-XTYEAR sy-vline 
WA_REXCITIRE_L_STR-ALVROWS sy-vline 
WA_REXCITIRE_L_STR-BLDAT sy-vline 
WA_REXCITIRE_L_STR-BUDAT sy-vline 
WA_REXCITIRE_L_STR-RERATAXTYPE sy-vline 
WA_REXCITIRE_L_STR-RERATAXGROUP sy-vline 
WA_REXCITIRE_L_STR-RECDFLOWTYPE sy-vline 
WA_REXCITIRE_L_STR-HEADERTXT sy-vline 
WA_REXCITIRE_L_STR-CHECKBOX sy-vline      INTO ld_text SEPARATED BY SPACE.

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