ABAP Select data from SAP table E3OILPC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3OILPC 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 E3OILPC. 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 E3OILPC 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_E3OILPC TYPE STANDARD TABLE OF E3OILPC,
      WA_E3OILPC TYPE E3OILPC,
      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: <E3OILPC> TYPE E3OILPC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3OILPC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3OILPC
  INTO TABLE IT_E3OILPC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3OILPC
*  INTO TABLE @DATA(IT_E3OILPC2).
*--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_E3OILPC INDEX 1 INTO DATA(WA_E3OILPC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3OILPC ASSIGNING <E3OILPC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3OILPC>-VKFCAL = 1.
<E3OILPC>-W11BOS = 1.
<E3OILPC>-W11EOS = 1.
<E3OILPC>-W12BOS = 1.
<E3OILPC>-W12EOS = 1.

ENDLOOP.

LOOP AT IT_E3OILPC INTO WA_E3OILPC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3OILPC-W21BOS, sy-vline,
  WA_E3OILPC-W21EOS, sy-vline,
  WA_E3OILPC-W22BOS, sy-vline,
  WA_E3OILPC-W22EOS, sy-vline,
  WA_E3OILPC-W31BOS, sy-vline,
  WA_E3OILPC-W31EOS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3OILPC 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_E3OILPC 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_E3OILPC INTO WA_E3OILPC.


*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_E3OILPC_STR, 
VKFCAL TYPE STRING,
W11BOS TYPE STRING,
W11EOS TYPE STRING,
W12BOS TYPE STRING,
W12EOS TYPE STRING,
W21BOS TYPE STRING,
W21EOS TYPE STRING,
W22BOS TYPE STRING,
W22EOS TYPE STRING,
W31BOS TYPE STRING,
W31EOS TYPE STRING,
W32BOS TYPE STRING,
W32EOS TYPE STRING,
W41BOS TYPE STRING,
W41EOS TYPE STRING,
W42BOS TYPE STRING,
W42EOS TYPE STRING,
W51BOS TYPE STRING,
W51EOS TYPE STRING,
W52BOS TYPE STRING,
W52EOS TYPE STRING,
W61BOS TYPE STRING,
W61EOS TYPE STRING,
W62BOS TYPE STRING,
W62EOS TYPE STRING,
W71BOS TYPE STRING,
W71EOS TYPE STRING,
W72BOS TYPE STRING,
W72EOS TYPE STRING,
W81BOS TYPE STRING,
W81EOS TYPE STRING,
W82BOS TYPE STRING,
W82EOS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E3OILPC_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_E3OILPC_STR-VKFCAL sy-vline 
WA_E3OILPC_STR-W11BOS sy-vline 
WA_E3OILPC_STR-W11EOS sy-vline 
WA_E3OILPC_STR-W12BOS sy-vline 
WA_E3OILPC_STR-W12EOS sy-vline 
WA_E3OILPC_STR-W21BOS sy-vline 
WA_E3OILPC_STR-W21EOS sy-vline 
WA_E3OILPC_STR-W22BOS sy-vline 
WA_E3OILPC_STR-W22EOS sy-vline 
WA_E3OILPC_STR-W31BOS sy-vline 
WA_E3OILPC_STR-W31EOS sy-vline 
WA_E3OILPC_STR-W32BOS sy-vline 
WA_E3OILPC_STR-W32EOS sy-vline 
WA_E3OILPC_STR-W41BOS sy-vline 
WA_E3OILPC_STR-W41EOS sy-vline 
WA_E3OILPC_STR-W42BOS sy-vline 
WA_E3OILPC_STR-W42EOS sy-vline 
WA_E3OILPC_STR-W51BOS sy-vline 
WA_E3OILPC_STR-W51EOS sy-vline 
WA_E3OILPC_STR-W52BOS sy-vline 
WA_E3OILPC_STR-W52EOS sy-vline 
WA_E3OILPC_STR-W61BOS sy-vline 
WA_E3OILPC_STR-W61EOS sy-vline 
WA_E3OILPC_STR-W62BOS sy-vline 
WA_E3OILPC_STR-W62EOS sy-vline 
WA_E3OILPC_STR-W71BOS sy-vline 
WA_E3OILPC_STR-W71EOS sy-vline 
WA_E3OILPC_STR-W72BOS sy-vline 
WA_E3OILPC_STR-W72EOS sy-vline 
WA_E3OILPC_STR-W81BOS sy-vline 
WA_E3OILPC_STR-W81EOS sy-vline 
WA_E3OILPC_STR-W82BOS sy-vline 
WA_E3OILPC_STR-W82EOS sy-vline      INTO ld_text SEPARATED BY SPACE.

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