ABAP Select data from SAP table REHO_RF61B1DS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REHO_RF61B1DS 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_RF61B1DS. 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_RF61B1DS 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_RF61B1DS TYPE STANDARD TABLE OF REHO_RF61B1DS,
      WA_REHO_RF61B1DS TYPE REHO_RF61B1DS,
      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_RF61B1DS> TYPE REHO_RF61B1DS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_REHO_RF61B1DS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM REHO_RF61B1DS
  INTO TABLE IT_REHO_RF61B1DS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REHO_RF61B1DS
*  INTO TABLE @DATA(IT_REHO_RF61B1DS2).
*--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_RF61B1DS INDEX 1 INTO DATA(WA_REHO_RF61B1DS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_REHO_RF61B1DS ASSIGNING <REHO_RF61B1DS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REHO_RF61B1DS>-REC_TYP = 1.
<REHO_RF61B1DS>-ABRKDNR = 1.
<REHO_RF61B1DS>-ABRORDNR = 1.
<REHO_RF61B1DS>-ABRBWKZDW = 1.
<REHO_RF61B1DS>-ABRBWKZB = 1.

ENDLOOP.

LOOP AT IT_REHO_RF61B1DS INTO WA_REHO_RF61B1DS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REHO_RF61B1DS-ABRBRES4, sy-vline,
  WA_REHO_RF61B1DS-ABRZTL, sy-vline,
  WA_REHO_RF61B1DS-ABRBBRSTART, sy-vline,
  WA_REHO_RF61B1DS-ABRBRES3, sy-vline,
  WA_REHO_RF61B1DS-ABRBBRHZ, sy-vline,
  WA_REHO_RF61B1DS-ABRBDTANF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REHO_RF61B1DS 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_RF61B1DS 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_RF61B1DS INTO WA_REHO_RF61B1DS.


*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_RF61B1DS_STR, 
REC_TYP TYPE STRING,
ABRKDNR TYPE STRING,
ABRORDNR TYPE STRING,
ABRBWKZDW TYPE STRING,
ABRBWKZB TYPE STRING,
ABRBRES4 TYPE STRING,
ABRZTL TYPE STRING,
ABRBBRSTART TYPE STRING,
ABRBRES3 TYPE STRING,
ABRBBRHZ TYPE STRING,
ABRBDTANF TYPE STRING,
ABRBQUANF TYPE STRING,
ABRBBTANF TYPE STRING,
ABRBBWANF TYPE STRING,
ABRBDTEND TYPE STRING,
ABRBQUEND TYPE STRING,
ABRBBTEND TYPE STRING,
ABRBBWEND TYPE STRING,
ABRBRES6 TYPE STRING,
ABRB1KZBST TYPE STRING,
ABRBSKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REHO_RF61B1DS_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_RF61B1DS_STR-REC_TYP sy-vline 
WA_REHO_RF61B1DS_STR-ABRKDNR sy-vline 
WA_REHO_RF61B1DS_STR-ABRORDNR sy-vline 
WA_REHO_RF61B1DS_STR-ABRBWKZDW sy-vline 
WA_REHO_RF61B1DS_STR-ABRBWKZB sy-vline 
WA_REHO_RF61B1DS_STR-ABRBRES4 sy-vline 
WA_REHO_RF61B1DS_STR-ABRZTL sy-vline 
WA_REHO_RF61B1DS_STR-ABRBBRSTART sy-vline 
WA_REHO_RF61B1DS_STR-ABRBRES3 sy-vline 
WA_REHO_RF61B1DS_STR-ABRBBRHZ sy-vline 
WA_REHO_RF61B1DS_STR-ABRBDTANF sy-vline 
WA_REHO_RF61B1DS_STR-ABRBQUANF sy-vline 
WA_REHO_RF61B1DS_STR-ABRBBTANF sy-vline 
WA_REHO_RF61B1DS_STR-ABRBBWANF sy-vline 
WA_REHO_RF61B1DS_STR-ABRBDTEND sy-vline 
WA_REHO_RF61B1DS_STR-ABRBQUEND sy-vline 
WA_REHO_RF61B1DS_STR-ABRBBTEND sy-vline 
WA_REHO_RF61B1DS_STR-ABRBBWEND sy-vline 
WA_REHO_RF61B1DS_STR-ABRBRES6 sy-vline 
WA_REHO_RF61B1DS_STR-ABRB1KZBST sy-vline 
WA_REHO_RF61B1DS_STR-ABRBSKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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