ABAP Select data from SAP table REHO_E804 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REHO_E804 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 REHO_E804. 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 REHO_E804 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_REHO_E804 TYPE STANDARD TABLE OF REHO_E804,
      WA_REHO_E804 TYPE REHO_E804,
      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: <REHO_E804> TYPE REHO_E804.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_REHO_E804.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM REHO_E804
  INTO TABLE IT_REHO_E804.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REHO_E804
*  INTO TABLE @DATA(IT_REHO_E8042).
*--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_REHO_E804 INDEX 1 INTO DATA(WA_REHO_E8042).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_REHO_E804 ASSIGNING <REHO_E804>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REHO_E804>-SA = 1.
<REHO_E804>-SFNR = 1.
<REHO_E804>-RZNR = 1.
<REHO_E804>-OBRKES = 1.
<REHO_E804>-OBAUFGEB = 1.

ENDLOOP.

LOOP AT IT_REHO_E804 INTO WA_REHO_E804.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REHO_E804-ABRFLGNR, sy-vline,
  WA_REHO_E804-BTRANTL, sy-vline,
  WA_REHO_E804-VBRKBEZ, sy-vline,
  WA_REHO_E804-VBRANTL, sy-vline,
  WA_REHO_E804-VBRKOST, sy-vline,
  WA_REHO_E804-PRMILGS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REHO_E804 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_REHO_E804 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_REHO_E804 INTO WA_REHO_E804.


*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_REHO_E804_STR, 
SA TYPE STRING,
SFNR TYPE STRING,
RZNR TYPE STRING,
OBRKES TYPE STRING,
OBAUFGEB TYPE STRING,
ABRFLGNR TYPE STRING,
BTRANTL TYPE STRING,
VBRKBEZ TYPE STRING,
VBRANTL TYPE STRING,
VBRKOST TYPE STRING,
PRMILGS TYPE STRING,
RDVBRANTL TYPE STRING,
PROMILRD TYPE STRING,
EINHZEIT TYPE STRING,
BTRGVERB TYPE STRING,
KZSCHATZ TYPE STRING,
KZZWABL TYPE STRING,
SCHLTEXT TYPE STRING,
KZABRART TYPE STRING,
FREI1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REHO_E804_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_REHO_E804_STR-SA sy-vline 
WA_REHO_E804_STR-SFNR sy-vline 
WA_REHO_E804_STR-RZNR sy-vline 
WA_REHO_E804_STR-OBRKES sy-vline 
WA_REHO_E804_STR-OBAUFGEB sy-vline 
WA_REHO_E804_STR-ABRFLGNR sy-vline 
WA_REHO_E804_STR-BTRANTL sy-vline 
WA_REHO_E804_STR-VBRKBEZ sy-vline 
WA_REHO_E804_STR-VBRANTL sy-vline 
WA_REHO_E804_STR-VBRKOST sy-vline 
WA_REHO_E804_STR-PRMILGS sy-vline 
WA_REHO_E804_STR-RDVBRANTL sy-vline 
WA_REHO_E804_STR-PROMILRD sy-vline 
WA_REHO_E804_STR-EINHZEIT sy-vline 
WA_REHO_E804_STR-BTRGVERB sy-vline 
WA_REHO_E804_STR-KZSCHATZ sy-vline 
WA_REHO_E804_STR-KZZWABL sy-vline 
WA_REHO_E804_STR-SCHLTEXT sy-vline 
WA_REHO_E804_STR-KZABRART sy-vline 
WA_REHO_E804_STR-FREI1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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