ABAP Select data from SAP table LOG_ORBF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LOG_ORBF
*  INTO TABLE @DATA(IT_LOG_ORBF2).
*--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_LOG_ORBF INDEX 1 INTO DATA(WA_LOG_ORBF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LOG_ORBF>-LEDNR = 1.
<LOG_ORBF>-OBJNR = 1.
<LOG_ORBF>-WRTTP = 1.
<LOG_ORBF>-VERSN = 1.
<LOG_ORBF>-ABKAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LOG_ORBF-KSTAR, sy-vline,
  WA_LOG_ORBF-VRGNG, sy-vline,
  WA_LOG_ORBF-BEKNZ, sy-vline,
  WA_LOG_ORBF-MEINH, sy-vline,
  WA_LOG_ORBF-WKGABG, sy-vline,
  WA_LOG_ORBF-MEGABG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LOG_ORBF 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_LOG_ORBF 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_LOG_ORBF INTO WA_LOG_ORBF.


*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.

*Conversion exit ALPHA, internal->external for field LEDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LOG_ORBF-LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOG_ORBF-LEDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WRTTP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LOG_ORBF-WRTTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOG_ORBF-WRTTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LOG_ORBF-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOG_ORBF-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABKAT, internal->external for field ABKAT
CALL FUNCTION 'CONVERSION_EXIT_ABKAT_OUTPUT'
  EXPORTING
    input =                      WA_LOG_ORBF-ABKAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOG_ORBF-ABKAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LOG_ORBF-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOG_ORBF-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BEKNZ, internal->external for field BEKNZ
CALL FUNCTION 'CONVERSION_EXIT_BEKNZ_OUTPUT'
  EXPORTING
    input =                      WA_LOG_ORBF-BEKNZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOG_ORBF-BEKNZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LOG_ORBF-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOG_ORBF-MEINH.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_LOG_ORBF_STR, 
LEDNR TYPE STRING,
OBJNR TYPE STRING,
WRTTP TYPE STRING,
VERSN TYPE STRING,
ABKAT TYPE STRING,
KSTAR TYPE STRING,
VRGNG TYPE STRING,
BEKNZ TYPE STRING,
MEINH TYPE STRING,
WKGABG TYPE STRING,
MEGABG TYPE STRING,
WKGABG_N TYPE STRING,
MEGABG_N TYPE STRING,
WKGABG_D TYPE STRING,
MEGABG_D TYPE STRING,
BELTP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LOG_ORBF_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_LOG_ORBF_STR-LEDNR sy-vline 
WA_LOG_ORBF_STR-OBJNR sy-vline 
WA_LOG_ORBF_STR-WRTTP sy-vline 
WA_LOG_ORBF_STR-VERSN sy-vline 
WA_LOG_ORBF_STR-ABKAT sy-vline 
WA_LOG_ORBF_STR-KSTAR sy-vline 
WA_LOG_ORBF_STR-VRGNG sy-vline 
WA_LOG_ORBF_STR-BEKNZ sy-vline 
WA_LOG_ORBF_STR-MEINH sy-vline 
WA_LOG_ORBF_STR-WKGABG sy-vline 
WA_LOG_ORBF_STR-MEGABG sy-vline 
WA_LOG_ORBF_STR-WKGABG_N sy-vline 
WA_LOG_ORBF_STR-MEGABG_N sy-vline 
WA_LOG_ORBF_STR-WKGABG_D sy-vline 
WA_LOG_ORBF_STR-MEGABG_D sy-vline 
WA_LOG_ORBF_STR-BELTP sy-vline      INTO ld_text SEPARATED BY SPACE.

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