ABAP Select data from SAP table LOGBR_S_NF_FUEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LOGBR_S_NF_FUEL
*  INTO TABLE @DATA(IT_LOGBR_S_NF_FUEL2).
*--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_LOGBR_S_NF_FUEL INDEX 1 INTO DATA(WA_LOGBR_S_NF_FUEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LOGBR_S_NF_FUEL>-MANDT = 1.
<LOGBR_S_NF_FUEL>-DOCNUM = 1.
<LOGBR_S_NF_FUEL>-ITMNUM = 1.
<LOGBR_S_NF_FUEL>-CPRODANP = 1.
<LOGBR_S_NF_FUEL>-CODIF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LOGBR_S_NF_FUEL-QTEMP, sy-vline,
  WA_LOGBR_S_NF_FUEL-UFCONS, sy-vline,
  WA_LOGBR_S_NF_FUEL-QBCPROD, sy-vline,
  WA_LOGBR_S_NF_FUEL-VALIGPROD, sy-vline,
  WA_LOGBR_S_NF_FUEL-VCIDE, sy-vline,
  WA_LOGBR_S_NF_FUEL-PMIXGN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LOGBR_S_NF_FUEL 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_LOGBR_S_NF_FUEL 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_LOGBR_S_NF_FUEL INTO WA_LOGBR_S_NF_FUEL.


*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_LOGBR_S_NF_FUEL_STR, 
MANDT TYPE STRING,
DOCNUM TYPE STRING,
ITMNUM TYPE STRING,
CPRODANP TYPE STRING,
CODIF TYPE STRING,
QTEMP TYPE STRING,
UFCONS TYPE STRING,
QBCPROD TYPE STRING,
VALIGPROD TYPE STRING,
VCIDE TYPE STRING,
PMIXGN TYPE STRING,
BICO TYPE STRING,
BOMBA TYPE STRING,
TANQUE TYPE STRING,
ENCINI TYPE STRING,
ENCFIN TYPE STRING,
ENCINI_D TYPE STRING,
ENCFIN_D TYPE STRING,
P_GLP TYPE STRING,
P_GNN TYPE STRING,
P_GNI TYPE STRING,
V_PART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LOGBR_S_NF_FUEL_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_LOGBR_S_NF_FUEL_STR-MANDT sy-vline 
WA_LOGBR_S_NF_FUEL_STR-DOCNUM sy-vline 
WA_LOGBR_S_NF_FUEL_STR-ITMNUM sy-vline 
WA_LOGBR_S_NF_FUEL_STR-CPRODANP sy-vline 
WA_LOGBR_S_NF_FUEL_STR-CODIF sy-vline 
WA_LOGBR_S_NF_FUEL_STR-QTEMP sy-vline 
WA_LOGBR_S_NF_FUEL_STR-UFCONS sy-vline 
WA_LOGBR_S_NF_FUEL_STR-QBCPROD sy-vline 
WA_LOGBR_S_NF_FUEL_STR-VALIGPROD sy-vline 
WA_LOGBR_S_NF_FUEL_STR-VCIDE sy-vline 
WA_LOGBR_S_NF_FUEL_STR-PMIXGN sy-vline 
WA_LOGBR_S_NF_FUEL_STR-BICO sy-vline 
WA_LOGBR_S_NF_FUEL_STR-BOMBA sy-vline 
WA_LOGBR_S_NF_FUEL_STR-TANQUE sy-vline 
WA_LOGBR_S_NF_FUEL_STR-ENCINI sy-vline 
WA_LOGBR_S_NF_FUEL_STR-ENCFIN sy-vline 
WA_LOGBR_S_NF_FUEL_STR-ENCINI_D sy-vline 
WA_LOGBR_S_NF_FUEL_STR-ENCFIN_D sy-vline 
WA_LOGBR_S_NF_FUEL_STR-P_GLP sy-vline 
WA_LOGBR_S_NF_FUEL_STR-P_GNN sy-vline 
WA_LOGBR_S_NF_FUEL_STR-P_GNI sy-vline 
WA_LOGBR_S_NF_FUEL_STR-V_PART sy-vline      INTO ld_text SEPARATED BY SPACE.

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