ABAP Select data from SAP table REXCITIRE2ALV_L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REXCITIRE2ALV_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 REXCITIRE2ALV_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 REXCITIRE2ALV_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_REXCITIRE2ALV_L TYPE STANDARD TABLE OF REXCITIRE2ALV_L,
      WA_REXCITIRE2ALV_L TYPE REXCITIRE2ALV_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: <REXCITIRE2ALV_L> TYPE REXCITIRE2ALV_L.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_REXCITIRE2ALV_L.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM REXCITIRE2ALV_L
  INTO TABLE IT_REXCITIRE2ALV_L.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCITIRE2ALV_L
*  INTO TABLE @DATA(IT_REXCITIRE2ALV_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_REXCITIRE2ALV_L INDEX 1 INTO DATA(WA_REXCITIRE2ALV_L2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_REXCITIRE2ALV_L ASSIGNING <REXCITIRE2ALV_L>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCITIRE2ALV_L>-INTRENO = 1.
<REXCITIRE2ALV_L>-BILLDATE = 1.
<REXCITIRE2ALV_L>-IRESTAT = 1.
<REXCITIRE2ALV_L>-ICON_DETAIL = 1.
<REXCITIRE2ALV_L>-CF_GENERATE_ICON = 1.

ENDLOOP.

LOOP AT IT_REXCITIRE2ALV_L INTO WA_REXCITIRE2ALV_L.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCITIRE2ALV_L-OBJRENTALCODE, sy-vline,
  WA_REXCITIRE2ALV_L-IRECALCTYPE, sy-vline,
  WA_REXCITIRE2ALV_L-TCODE1, sy-vline,
  WA_REXCITIRE2ALV_L-IRERENTAXAMOUNT, sy-vline,
  WA_REXCITIRE2ALV_L-IREPAYB, sy-vline,
  WA_REXCITIRE2ALV_L-CURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCITIRE2ALV_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_REXCITIRE2ALV_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_REXCITIRE2ALV_L INTO WA_REXCITIRE2ALV_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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_REXCITIRE2ALV_L_STR, 
INTRENO TYPE STRING,
BILLDATE TYPE STRING,
IRESTAT TYPE STRING,
ICON_DETAIL TYPE STRING,
CF_GENERATE_ICON TYPE STRING,
OBJRENTALCODE TYPE STRING,
IRECALCTYPE TYPE STRING,
TCODE1 TYPE STRING,
IRERENTAXAMOUNT TYPE STRING,
IREPAYB TYPE STRING,
CURRENCY TYPE STRING,
ISACTIVE TYPE STRING,
ISCANCELREC TYPE STRING,
ISMANUAL TYPE STRING,
ISMANUALREC TYPE STRING,
ISFIRSTREC TYPE STRING,
ISONETIMEPYMNT TYPE STRING,
TRANSFER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXCITIRE2ALV_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_REXCITIRE2ALV_L_STR-INTRENO sy-vline 
WA_REXCITIRE2ALV_L_STR-BILLDATE sy-vline 
WA_REXCITIRE2ALV_L_STR-IRESTAT sy-vline 
WA_REXCITIRE2ALV_L_STR-ICON_DETAIL sy-vline 
WA_REXCITIRE2ALV_L_STR-CF_GENERATE_ICON sy-vline 
WA_REXCITIRE2ALV_L_STR-OBJRENTALCODE sy-vline 
WA_REXCITIRE2ALV_L_STR-IRECALCTYPE sy-vline 
WA_REXCITIRE2ALV_L_STR-TCODE1 sy-vline 
WA_REXCITIRE2ALV_L_STR-IRERENTAXAMOUNT sy-vline 
WA_REXCITIRE2ALV_L_STR-IREPAYB sy-vline 
WA_REXCITIRE2ALV_L_STR-CURRENCY sy-vline 
WA_REXCITIRE2ALV_L_STR-ISACTIVE sy-vline 
WA_REXCITIRE2ALV_L_STR-ISCANCELREC sy-vline 
WA_REXCITIRE2ALV_L_STR-ISMANUAL sy-vline 
WA_REXCITIRE2ALV_L_STR-ISMANUALREC sy-vline 
WA_REXCITIRE2ALV_L_STR-ISFIRSTREC sy-vline 
WA_REXCITIRE2ALV_L_STR-ISONETIMEPYMNT sy-vline 
WA_REXCITIRE2ALV_L_STR-TRANSFER sy-vline      INTO ld_text SEPARATED BY SPACE.

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