ABAP Select data from SAP table E2OILDV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2OILDV 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 E2OILDV. 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 E2OILDV 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_E2OILDV TYPE STANDARD TABLE OF E2OILDV,
      WA_E2OILDV TYPE E2OILDV,
      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: <E2OILDV> TYPE E2OILDV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2OILDV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2OILDV
  INTO TABLE IT_E2OILDV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2OILDV
*  INTO TABLE @DATA(IT_E2OILDV2).
*--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_E2OILDV INDEX 1 INTO DATA(WA_E2OILDV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2OILDV ASSIGNING <E2OILDV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2OILDV>-ACTION = 1.
<E2OILDV>-LOADDATE = 1.
<E2OILDV>-SHIFT = 1.
<E2OILDV>-DRIVERCODE = 1.
<E2OILDV>-VEHICLE = 1.

ENDLOOP.

LOOP AT IT_E2OILDV INTO WA_E2OILDV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2OILDV-TPLST, sy-vline,
  WA_E2OILDV-SH_LENGTH, sy-vline,
  WA_E2OILDV-START_TIME, sy-vline,
  WA_E2OILDV-WORK_TIME, sy-vline,
  WA_E2OILDV-SHIFT_DATE, sy-vline,
  WA_E2OILDV-DRIVERHOUR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2OILDV 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_E2OILDV 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_E2OILDV INTO WA_E2OILDV.


*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 DRIVERCODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILDV-DRIVERCODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILDV-DRIVERCODE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VEHICLE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILDV-VEHICLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILDV-VEHICLE.
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_E2OILDV_STR, 
ACTION TYPE STRING,
LOADDATE TYPE STRING,
SHIFT TYPE STRING,
DRIVERCODE TYPE STRING,
VEHICLE TYPE STRING,
TPLST TYPE STRING,
SH_LENGTH TYPE STRING,
START_TIME TYPE STRING,
WORK_TIME TYPE STRING,
SHIFT_DATE TYPE STRING,
DRIVERHOUR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2OILDV_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_E2OILDV_STR-ACTION sy-vline 
WA_E2OILDV_STR-LOADDATE sy-vline 
WA_E2OILDV_STR-SHIFT sy-vline 
WA_E2OILDV_STR-DRIVERCODE sy-vline 
WA_E2OILDV_STR-VEHICLE sy-vline 
WA_E2OILDV_STR-TPLST sy-vline 
WA_E2OILDV_STR-SH_LENGTH sy-vline 
WA_E2OILDV_STR-START_TIME sy-vline 
WA_E2OILDV_STR-WORK_TIME sy-vline 
WA_E2OILDV_STR-SHIFT_DATE sy-vline 
WA_E2OILDV_STR-DRIVERHOUR sy-vline      INTO ld_text SEPARATED BY SPACE.

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