ABAP Select data from SAP table OIJ08_TRIPDEMRGE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OIJ08_TRIPDEMRGE 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 OIJ08_TRIPDEMRGE. 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 OIJ08_TRIPDEMRGE 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_OIJ08_TRIPDEMRGE TYPE STANDARD TABLE OF OIJ08_TRIPDEMRGE,
      WA_OIJ08_TRIPDEMRGE TYPE OIJ08_TRIPDEMRGE,
      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: <OIJ08_TRIPDEMRGE> TYPE OIJ08_TRIPDEMRGE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OIJ08_TRIPDEMRGE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OIJ08_TRIPDEMRGE
  INTO TABLE IT_OIJ08_TRIPDEMRGE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIJ08_TRIPDEMRGE
*  INTO TABLE @DATA(IT_OIJ08_TRIPDEMRGE2).
*--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_OIJ08_TRIPDEMRGE INDEX 1 INTO DATA(WA_OIJ08_TRIPDEMRGE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OIJ08_TRIPDEMRGE ASSIGNING <OIJ08_TRIPDEMRGE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIJ08_TRIPDEMRGE>-MANDT = 1.
<OIJ08_TRIPDEMRGE>-TRIP_ID = 1.
<OIJ08_TRIPDEMRGE>-TRIP_ITEM = 1.
<OIJ08_TRIPDEMRGE>-CHARGE_KEY = 1.
<OIJ08_TRIPDEMRGE>-NOMTK = 1.

ENDLOOP.

LOOP AT IT_OIJ08_TRIPDEMRGE INTO WA_OIJ08_TRIPDEMRGE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIJ08_TRIPDEMRGE-NOMIT, sy-vline,
  WA_OIJ08_TRIPDEMRGE-SHNUMBER, sy-vline,
  WA_OIJ08_TRIPDEMRGE-SHPITEM, sy-vline,
  WA_OIJ08_TRIPDEMRGE-VBELN, sy-vline,
  WA_OIJ08_TRIPDEMRGE-POSNR, sy-vline,
  WA_OIJ08_TRIPDEMRGE-ALLOCATED_CHARGES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIJ08_TRIPDEMRGE 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_OIJ08_TRIPDEMRGE 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_OIJ08_TRIPDEMRGE INTO WA_OIJ08_TRIPDEMRGE.


*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 TRIP_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIJ08_TRIPDEMRGE-TRIP_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIJ08_TRIPDEMRGE-TRIP_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NOMTK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIJ08_TRIPDEMRGE-NOMTK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIJ08_TRIPDEMRGE-NOMTK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SHNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIJ08_TRIPDEMRGE-SHNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIJ08_TRIPDEMRGE-SHNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIJ08_TRIPDEMRGE-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIJ08_TRIPDEMRGE-VBELN.
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_OIJ08_TRIPDEMRGE_STR, 
MANDT TYPE STRING,
TRIP_ID TYPE STRING,
TRIP_ITEM TYPE STRING,
CHARGE_KEY TYPE STRING,
NOMTK TYPE STRING,
NOMIT TYPE STRING,
SHNUMBER TYPE STRING,
SHPITEM TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
ALLOCATED_CHARGES TYPE STRING,
ALLOCATED_CURR TYPE STRING,
DELIND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIJ08_TRIPDEMRGE_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_OIJ08_TRIPDEMRGE_STR-MANDT sy-vline 
WA_OIJ08_TRIPDEMRGE_STR-TRIP_ID sy-vline 
WA_OIJ08_TRIPDEMRGE_STR-TRIP_ITEM sy-vline 
WA_OIJ08_TRIPDEMRGE_STR-CHARGE_KEY sy-vline 
WA_OIJ08_TRIPDEMRGE_STR-NOMTK sy-vline 
WA_OIJ08_TRIPDEMRGE_STR-NOMIT sy-vline 
WA_OIJ08_TRIPDEMRGE_STR-SHNUMBER sy-vline 
WA_OIJ08_TRIPDEMRGE_STR-SHPITEM sy-vline 
WA_OIJ08_TRIPDEMRGE_STR-VBELN sy-vline 
WA_OIJ08_TRIPDEMRGE_STR-POSNR sy-vline 
WA_OIJ08_TRIPDEMRGE_STR-ALLOCATED_CHARGES sy-vline 
WA_OIJ08_TRIPDEMRGE_STR-ALLOCATED_CURR sy-vline 
WA_OIJ08_TRIPDEMRGE_STR-DELIND sy-vline      INTO ld_text SEPARATED BY SPACE.

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