ABAP Select data from SAP table OI0_DEL_ITEM_FIELDS_X into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OI0_DEL_ITEM_FIELDS_X 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 OI0_DEL_ITEM_FIELDS_X. 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 OI0_DEL_ITEM_FIELDS_X 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_OI0_DEL_ITEM_FIELDS_X TYPE STANDARD TABLE OF OI0_DEL_ITEM_FIELDS_X,
      WA_OI0_DEL_ITEM_FIELDS_X TYPE OI0_DEL_ITEM_FIELDS_X,
      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: <OI0_DEL_ITEM_FIELDS_X> TYPE OI0_DEL_ITEM_FIELDS_X.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OI0_DEL_ITEM_FIELDS_X.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OI0_DEL_ITEM_FIELDS_X
  INTO TABLE IT_OI0_DEL_ITEM_FIELDS_X.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OI0_DEL_ITEM_FIELDS_X
*  INTO TABLE @DATA(IT_OI0_DEL_ITEM_FIELDS_X2).
*--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_OI0_DEL_ITEM_FIELDS_X INDEX 1 INTO DATA(WA_OI0_DEL_ITEM_FIELDS_X2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OI0_DEL_ITEM_FIELDS_X ASSIGNING <OI0_DEL_ITEM_FIELDS_X>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OI0_DEL_ITEM_FIELDS_X>-POSNR = 1.
<OI0_DEL_ITEM_FIELDS_X>-BWTAR = 1.
<OI0_DEL_ITEM_FIELDS_X>-OIC_OLAND1 = 1.
<OI0_DEL_ITEM_FIELDS_X>-OIC_OCOUNC = 1.
<OI0_DEL_ITEM_FIELDS_X>-OIC_OREGIO = 1.

ENDLOOP.

LOOP AT IT_OI0_DEL_ITEM_FIELDS_X INTO WA_OI0_DEL_ITEM_FIELDS_X.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OI0_DEL_ITEM_FIELDS_X-OIC_OCITYC, sy-vline,
  WA_OI0_DEL_ITEM_FIELDS_X-OIC_DLAND1, sy-vline,
  WA_OI0_DEL_ITEM_FIELDS_X-OIC_DCOUNC, sy-vline,
  WA_OI0_DEL_ITEM_FIELDS_X-OIC_DREGIO, sy-vline,
  WA_OI0_DEL_ITEM_FIELDS_X-OIC_DCITYC, sy-vline,
  WA_OI0_DEL_ITEM_FIELDS_X-BDICH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OI0_DEL_ITEM_FIELDS_X 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_OI0_DEL_ITEM_FIELDS_X 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_OI0_DEL_ITEM_FIELDS_X INTO WA_OI0_DEL_ITEM_FIELDS_X.


*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_OI0_DEL_ITEM_FIELDS_X_STR, 
POSNR TYPE STRING,
BWTAR TYPE STRING,
OIC_OLAND1 TYPE STRING,
OIC_OCOUNC TYPE STRING,
OIC_OREGIO TYPE STRING,
OIC_OCITYC TYPE STRING,
OIC_DLAND1 TYPE STRING,
OIC_DCOUNC TYPE STRING,
OIC_DREGIO TYPE STRING,
OIC_DCITYC TYPE STRING,
BDICH TYPE STRING,
TDICH TYPE STRING,
BHVAL TYPE STRING,
THVAL TYPE STRING,
MTPRES TYPE STRING,
MTCOMBPRES TYPE STRING,
TPRED TYPE STRING,
MTTMP TYPE STRING,
MTCOMBTMP TYPE STRING,
TTMPHV TYPE STRING,
TSTMP TYPE STRING,
ARRATIO TYPE STRING,
CH4RATIO TYPE STRING,
C10H22RATIO TYPE STRING,
C2H6RATIO TYPE STRING,
C3H8RATIO TYPE STRING,
ISOC4H10RATIO TYPE STRING,
NC4H10RATIO TYPE STRING,
ISOC5H12RATIO TYPE STRING,
NC5H12RATIO TYPE STRING,
C6H14RATIO TYPE STRING,
C7H16RATIO TYPE STRING,
C8H18RATIO TYPE STRING,
C9H20RATIO TYPE STRING,
CORATIO TYPE STRING,
CO2RATIO TYPE STRING,
H2RATIO TYPE STRING,
H2ORATIO TYPE STRING,
H2SRATIO TYPE STRING,
HERATIO TYPE STRING,
N2RATIO TYPE STRING,
O2RATIO TYPE STRING,
MCF TYPE STRING,
ABIND TYPE STRING,
HYDRO TYPE STRING,
BSWCN TYPE STRING,
VBELN TYPE STRING,
QUANTITY_X TYPE STRING,
OID_FINAL TYPE STRING,
OIC_MOT TYPE STRING,
OIA_BASELO TYPE STRING,
OID_EXTBOL TYPE STRING,
OIA11_TX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OI0_DEL_ITEM_FIELDS_X_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_OI0_DEL_ITEM_FIELDS_X_STR-POSNR sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-BWTAR sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-OIC_OLAND1 sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-OIC_OCOUNC sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-OIC_OREGIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-OIC_OCITYC sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-OIC_DLAND1 sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-OIC_DCOUNC sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-OIC_DREGIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-OIC_DCITYC sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-BDICH sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-TDICH sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-BHVAL sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-THVAL sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-MTPRES sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-MTCOMBPRES sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-TPRED sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-MTTMP sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-MTCOMBTMP sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-TTMPHV sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-TSTMP sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-ARRATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-CH4RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-C10H22RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-C2H6RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-C3H8RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-ISOC4H10RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-NC4H10RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-ISOC5H12RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-NC5H12RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-C6H14RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-C7H16RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-C8H18RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-C9H20RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-CORATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-CO2RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-H2RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-H2ORATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-H2SRATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-HERATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-N2RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-O2RATIO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-MCF sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-ABIND sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-HYDRO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-BSWCN sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-VBELN sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-QUANTITY_X sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-OID_FINAL sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-OIC_MOT sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-OIA_BASELO sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-OID_EXTBOL sy-vline 
WA_OI0_DEL_ITEM_FIELDS_X_STR-OIA11_TX sy-vline      INTO ld_text SEPARATED BY SPACE.

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