ABAP Select data from SAP table REAJ_EXPENSE_OVERVIEW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REAJ_EXPENSE_OVERVIEW
*  INTO TABLE @DATA(IT_REAJ_EXPENSE_OVERVIEW2).
*--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_REAJ_EXPENSE_OVERVIEW INDEX 1 INTO DATA(WA_REAJ_EXPENSE_OVERVIEW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REAJ_EXPENSE_OVERVIEW>-RECISVALIDFROM = 1.
<REAJ_EXPENSE_OVERVIEW>-RECISVALIDTO = 1.
<REAJ_EXPENSE_OVERVIEW>-EXPENSE = 1.
<REAJ_EXPENSE_OVERVIEW>-RENT = 1.
<REAJ_EXPENSE_OVERVIEW>-TAKEEXPENSE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REAJ_EXPENSE_OVERVIEW-OVERPLUS, sy-vline,
  WA_REAJ_EXPENSE_OVERVIEW-TAKEOVERPLUS, sy-vline,
  WA_REAJ_EXPENSE_OVERVIEW-EXPENSEAREA, sy-vline,
  WA_REAJ_EXPENSE_OVERVIEW-RENTAREA, sy-vline,
  WA_REAJ_EXPENSE_OVERVIEW-TAKEEXPENSEAREA, sy-vline,
  WA_REAJ_EXPENSE_OVERVIEW-OVERPLUSAREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REAJ_EXPENSE_OVERVIEW 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_REAJ_EXPENSE_OVERVIEW 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_REAJ_EXPENSE_OVERVIEW INTO WA_REAJ_EXPENSE_OVERVIEW.


*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_REAJ_EXPENSE_OVERVIEW_STR, 
RECISVALIDFROM TYPE STRING,
RECISVALIDTO TYPE STRING,
EXPENSE TYPE STRING,
RENT TYPE STRING,
TAKEEXPENSE TYPE STRING,
OVERPLUS TYPE STRING,
TAKEOVERPLUS TYPE STRING,
EXPENSEAREA TYPE STRING,
RENTAREA TYPE STRING,
TAKEEXPENSEAREA TYPE STRING,
OVERPLUSAREA TYPE STRING,
TAKEOVERPLUSAREA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REAJ_EXPENSE_OVERVIEW_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_REAJ_EXPENSE_OVERVIEW_STR-RECISVALIDFROM sy-vline 
WA_REAJ_EXPENSE_OVERVIEW_STR-RECISVALIDTO sy-vline 
WA_REAJ_EXPENSE_OVERVIEW_STR-EXPENSE sy-vline 
WA_REAJ_EXPENSE_OVERVIEW_STR-RENT sy-vline 
WA_REAJ_EXPENSE_OVERVIEW_STR-TAKEEXPENSE sy-vline 
WA_REAJ_EXPENSE_OVERVIEW_STR-OVERPLUS sy-vline 
WA_REAJ_EXPENSE_OVERVIEW_STR-TAKEOVERPLUS sy-vline 
WA_REAJ_EXPENSE_OVERVIEW_STR-EXPENSEAREA sy-vline 
WA_REAJ_EXPENSE_OVERVIEW_STR-RENTAREA sy-vline 
WA_REAJ_EXPENSE_OVERVIEW_STR-TAKEEXPENSEAREA sy-vline 
WA_REAJ_EXPENSE_OVERVIEW_STR-OVERPLUSAREA sy-vline 
WA_REAJ_EXPENSE_OVERVIEW_STR-TAKEOVERPLUSAREA sy-vline      INTO ld_text SEPARATED BY SPACE.

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