ABAP Select data from SAP table REA41 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REA41 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 REA41. 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 REA41 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_REA41 TYPE STANDARD TABLE OF REA41,
      WA_REA41 TYPE REA41,
      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: <REA41> TYPE REA41.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_REA41.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM REA41
  INTO TABLE IT_REA41.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REA41
*  INTO TABLE @DATA(IT_REA412).
*--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_REA41 INDEX 1 INTO DATA(WA_REA412).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_REA41 ASSIGNING <REA41>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REA41>-TERMSA = 1.
<REA41>-TERMSCHL = 1.
<REA41>-SPARTE = 1.
<REA41>-TERMTXT = 1.
<REA41>-ERSTTXT = 1.

ENDLOOP.

LOOP AT IT_REA41 INTO WA_REA41.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REA41-TERMVON, sy-vline,
  WA_REA41-TERMBIS, sy-vline,
  WA_REA41-ABLTERMERS, sy-vline,
  WA_REA41-ABLMONAT, sy-vline,
  WA_REA41-HMODUS, sy-vline,
  WA_REA41-AMODUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REA41 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_REA41 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_REA41 INTO WA_REA41.


*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_REA41_STR, 
TERMSA TYPE STRING,
TERMSCHL TYPE STRING,
SPARTE TYPE STRING,
TERMTXT TYPE STRING,
ERSTTXT TYPE STRING,
TERMVON TYPE STRING,
TERMBIS TYPE STRING,
ABLTERMERS TYPE STRING,
ABLMONAT TYPE STRING,
HMODUS TYPE STRING,
AMODUS TYPE STRING,
VMODUS TYPE STRING,
DYTAGE TYPE STRING,
A_PORTION TYPE STRING,
PORTION_DY TYPE STRING,
A_ABLEINH TYPE STRING,
ABLEINH_DY TYPE STRING,
SCHLUESS1 TYPE STRING,
SCHLUESS2 TYPE STRING,
ZUDATABL TYPE STRING,
PARASATZ TYPE STRING,
RAHMEN1 TYPE STRING,
RAHMEN2 TYPE STRING,
RAHMEN3 TYPE STRING,
RAHMEN5 TYPE STRING,
RAHMEN4 TYPE STRING,
MONAT TYPE STRING,
JAHR TYPE STRING,
MTC02 TYPE STRING,
MTC01 TYPE STRING,
TITEL TYPE STRING,
LOOP_FIRST TYPE STRING,
TAB_MAX TYPE STRING,
TAGE TYPE STRING,
P_TEXT TYPE STRING,
V_PORT TYPE STRING,
V_ABL TYPE STRING,
PA_DELETE TYPE STRING,
PA_AUSWERT TYPE STRING,
PA_AUSWERT_TS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REA41_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_REA41_STR-TERMSA sy-vline 
WA_REA41_STR-TERMSCHL sy-vline 
WA_REA41_STR-SPARTE sy-vline 
WA_REA41_STR-TERMTXT sy-vline 
WA_REA41_STR-ERSTTXT sy-vline 
WA_REA41_STR-TERMVON sy-vline 
WA_REA41_STR-TERMBIS sy-vline 
WA_REA41_STR-ABLTERMERS sy-vline 
WA_REA41_STR-ABLMONAT sy-vline 
WA_REA41_STR-HMODUS sy-vline 
WA_REA41_STR-AMODUS sy-vline 
WA_REA41_STR-VMODUS sy-vline 
WA_REA41_STR-DYTAGE sy-vline 
WA_REA41_STR-A_PORTION sy-vline 
WA_REA41_STR-PORTION_DY sy-vline 
WA_REA41_STR-A_ABLEINH sy-vline 
WA_REA41_STR-ABLEINH_DY sy-vline 
WA_REA41_STR-SCHLUESS1 sy-vline 
WA_REA41_STR-SCHLUESS2 sy-vline 
WA_REA41_STR-ZUDATABL sy-vline 
WA_REA41_STR-PARASATZ sy-vline 
WA_REA41_STR-RAHMEN1 sy-vline 
WA_REA41_STR-RAHMEN2 sy-vline 
WA_REA41_STR-RAHMEN3 sy-vline 
WA_REA41_STR-RAHMEN5 sy-vline 
WA_REA41_STR-RAHMEN4 sy-vline 
WA_REA41_STR-MONAT sy-vline 
WA_REA41_STR-JAHR sy-vline 
WA_REA41_STR-MTC02 sy-vline 
WA_REA41_STR-MTC01 sy-vline 
WA_REA41_STR-TITEL sy-vline 
WA_REA41_STR-LOOP_FIRST sy-vline 
WA_REA41_STR-TAB_MAX sy-vline 
WA_REA41_STR-TAGE sy-vline 
WA_REA41_STR-P_TEXT sy-vline 
WA_REA41_STR-V_PORT sy-vline 
WA_REA41_STR-V_ABL sy-vline 
WA_REA41_STR-PA_DELETE sy-vline 
WA_REA41_STR-PA_AUSWERT sy-vline 
WA_REA41_STR-PA_AUSWERT_TS sy-vline      INTO ld_text SEPARATED BY SPACE.

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