ABAP Select data from SAP table V_OIRC_FUELS_PRM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_OIRC_FUELS_PRM
*  INTO TABLE @DATA(IT_V_OIRC_FUELS_PRM2).
*--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_V_OIRC_FUELS_PRM INDEX 1 INTO DATA(WA_V_OIRC_FUELS_PRM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_OIRC_FUELS_PRM>-MANDT = 1.
<V_OIRC_FUELS_PRM>-F_PR = 1.
<V_OIRC_FUELS_PRM>-VTEXT = 1.
<V_OIRC_FUELS_PRM>-MATNR = 1.
<V_OIRC_FUELS_PRM>-MAKTX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_OIRC_FUELS_PRM-PROWL, sy-vline,
  WA_V_OIRC_FUELS_PRM-PROEL, sy-vline,
  WA_V_OIRC_FUELS_PRM-PROWG, sy-vline,
  WA_V_OIRC_FUELS_PRM-PROEG, sy-vline,
  WA_V_OIRC_FUELS_PRM-HANTYG, sy-vline,
  WA_V_OIRC_FUELS_PRM-HANTYL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_OIRC_FUELS_PRM 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_V_OIRC_FUELS_PRM 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_V_OIRC_FUELS_PRM INTO WA_V_OIRC_FUELS_PRM.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_V_OIRC_FUELS_PRM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OIRC_FUELS_PRM-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MTTEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_OIRC_FUELS_PRM-MTTEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OIRC_FUELS_PRM-MTTEH.
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_V_OIRC_FUELS_PRM_STR, 
MANDT TYPE STRING,
F_PR TYPE STRING,
VTEXT TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
PROWL TYPE STRING,
PROEL TYPE STRING,
PROWG TYPE STRING,
PROEG TYPE STRING,
HANTYG TYPE STRING,
HANTYL TYPE STRING,
TSTMP TYPE STRING,
TSTEH TYPE STRING,
TDICH TYPE STRING,
MTTMP TYPE STRING,
MTTEH TYPE STRING,
HYDRO TYPE STRING,
ABIND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_OIRC_FUELS_PRM_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_V_OIRC_FUELS_PRM_STR-MANDT sy-vline 
WA_V_OIRC_FUELS_PRM_STR-F_PR sy-vline 
WA_V_OIRC_FUELS_PRM_STR-VTEXT sy-vline 
WA_V_OIRC_FUELS_PRM_STR-MATNR sy-vline 
WA_V_OIRC_FUELS_PRM_STR-MAKTX sy-vline 
WA_V_OIRC_FUELS_PRM_STR-PROWL sy-vline 
WA_V_OIRC_FUELS_PRM_STR-PROEL sy-vline 
WA_V_OIRC_FUELS_PRM_STR-PROWG sy-vline 
WA_V_OIRC_FUELS_PRM_STR-PROEG sy-vline 
WA_V_OIRC_FUELS_PRM_STR-HANTYG sy-vline 
WA_V_OIRC_FUELS_PRM_STR-HANTYL sy-vline 
WA_V_OIRC_FUELS_PRM_STR-TSTMP sy-vline 
WA_V_OIRC_FUELS_PRM_STR-TSTEH sy-vline 
WA_V_OIRC_FUELS_PRM_STR-TDICH sy-vline 
WA_V_OIRC_FUELS_PRM_STR-MTTMP sy-vline 
WA_V_OIRC_FUELS_PRM_STR-MTTEH sy-vline 
WA_V_OIRC_FUELS_PRM_STR-HYDRO sy-vline 
WA_V_OIRC_FUELS_PRM_STR-ABIND sy-vline      INTO ld_text SEPARATED BY SPACE.

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