ABAP Select data from SAP table E2OILVH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2OILVH 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 E2OILVH. 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 E2OILVH 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_E2OILVH TYPE STANDARD TABLE OF E2OILVH,
      WA_E2OILVH TYPE E2OILVH,
      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: <E2OILVH> TYPE E2OILVH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2OILVH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2OILVH
  INTO TABLE IT_E2OILVH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2OILVH
*  INTO TABLE @DATA(IT_E2OILVH2).
*--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_E2OILVH INDEX 1 INTO DATA(WA_E2OILVH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2OILVH ASSIGNING <E2OILVH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2OILVH>-VEHICLE = 1.
<E2OILVH>-COMP_GROUP = 1.
<E2OILVH>-VEH_TYPE = 1.
<E2OILVH>-VEH_ID = 1.
<E2OILVH>-CARRIER = 1.

ENDLOOP.

LOOP AT IT_E2OILVH INTO WA_E2OILVH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2OILVH-VEH_NRTUS, sy-vline,
  WA_E2OILVH-VOL_UOM, sy-vline,
  WA_E2OILVH-WGT_UOM, sy-vline,
  WA_E2OILVH-DIM_UOM, sy-vline,
  WA_E2OILVH-VEH_MAXWGT, sy-vline,
  WA_E2OILVH-VEH_UNLWGT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2OILVH 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_E2OILVH 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_E2OILVH INTO WA_E2OILVH.


*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 VEHICLE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILVH-VEHICLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILVH-VEHICLE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field COMP_GROUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILVH-COMP_GROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILVH-COMP_GROUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CARRIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILVH-CARRIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILVH-CARRIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUIP_NR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OILVH-EQUIP_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OILVH-EQUIP_NR.
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_E2OILVH_STR, 
VEHICLE TYPE STRING,
COMP_GROUP TYPE STRING,
VEH_TYPE TYPE STRING,
VEH_ID TYPE STRING,
CARRIER TYPE STRING,
VEH_NRTUS TYPE STRING,
VOL_UOM TYPE STRING,
WGT_UOM TYPE STRING,
DIM_UOM TYPE STRING,
VEH_MAXWGT TYPE STRING,
VEH_UNLWGT TYPE STRING,
VEH_MAXVOL TYPE STRING,
EQUIP_NR TYPE STRING,
VEH_HEIGHT TYPE STRING,
VEH_WIDTH TYPE STRING,
VEH_LENGTH TYPE STRING,
ROUTE TYPE STRING,
TPPOINT TYPE STRING,
VEH_STATUS TYPE STRING,
VEH_TEXT TYPE STRING,
STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2OILVH_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_E2OILVH_STR-VEHICLE sy-vline 
WA_E2OILVH_STR-COMP_GROUP sy-vline 
WA_E2OILVH_STR-VEH_TYPE sy-vline 
WA_E2OILVH_STR-VEH_ID sy-vline 
WA_E2OILVH_STR-CARRIER sy-vline 
WA_E2OILVH_STR-VEH_NRTUS sy-vline 
WA_E2OILVH_STR-VOL_UOM sy-vline 
WA_E2OILVH_STR-WGT_UOM sy-vline 
WA_E2OILVH_STR-DIM_UOM sy-vline 
WA_E2OILVH_STR-VEH_MAXWGT sy-vline 
WA_E2OILVH_STR-VEH_UNLWGT sy-vline 
WA_E2OILVH_STR-VEH_MAXVOL sy-vline 
WA_E2OILVH_STR-EQUIP_NR sy-vline 
WA_E2OILVH_STR-VEH_HEIGHT sy-vline 
WA_E2OILVH_STR-VEH_WIDTH sy-vline 
WA_E2OILVH_STR-VEH_LENGTH sy-vline 
WA_E2OILVH_STR-ROUTE sy-vline 
WA_E2OILVH_STR-TPPOINT sy-vline 
WA_E2OILVH_STR-VEH_STATUS sy-vline 
WA_E2OILVH_STR-VEH_TEXT sy-vline 
WA_E2OILVH_STR-STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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