ABAP Select data from SAP table V_OIGSVC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_OIGSVC
*  INTO TABLE @DATA(IT_V_OIGSVC2).
*--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_V_OIGSVC INDEX 1 INTO DATA(WA_V_OIGSVC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_OIGSVC>-CLIENT = 1.
<V_OIGSVC>-TU_NUMBER = 1.
<V_OIGSVC>-LDDATE = 1.
<V_OIGSVC>-LDTIME = 1.
<V_OIGSVC>-SHIFT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_OIGSVC-TRIP, sy-vline,
  WA_V_OIGSVC-SHNUMBER, sy-vline,
  WA_V_OIGSVC-VEH_NR, sy-vline,
  WA_V_OIGSVC-TPU_NR, sy-vline,
  WA_V_OIGSVC-SHNUM_PRV, sy-vline,
  WA_V_OIGSVC-SHNUM_NXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_OIGSVC 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_V_OIGSVC 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_V_OIGSVC INTO WA_V_OIGSVC.


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

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

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

*Conversion exit ALPHA, internal->external for field SHNUM_NXT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_OIGSVC-SHNUM_NXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OIGSVC-SHNUM_NXT.
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_V_OIGSVC_STR, 
CLIENT TYPE STRING,
TU_NUMBER TYPE STRING,
LDDATE TYPE STRING,
LDTIME TYPE STRING,
SHIFT TYPE STRING,
TRIP TYPE STRING,
SHNUMBER TYPE STRING,
VEH_NR TYPE STRING,
TPU_NR TYPE STRING,
SHNUM_PRV TYPE STRING,
SHNUM_NXT TYPE STRING,
RECFLGPTL TYPE STRING,
RECFLGLOV TYPE STRING,
OIG_SSTSF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_OIGSVC_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_V_OIGSVC_STR-CLIENT sy-vline 
WA_V_OIGSVC_STR-TU_NUMBER sy-vline 
WA_V_OIGSVC_STR-LDDATE sy-vline 
WA_V_OIGSVC_STR-LDTIME sy-vline 
WA_V_OIGSVC_STR-SHIFT sy-vline 
WA_V_OIGSVC_STR-TRIP sy-vline 
WA_V_OIGSVC_STR-SHNUMBER sy-vline 
WA_V_OIGSVC_STR-VEH_NR sy-vline 
WA_V_OIGSVC_STR-TPU_NR sy-vline 
WA_V_OIGSVC_STR-SHNUM_PRV sy-vline 
WA_V_OIGSVC_STR-SHNUM_NXT sy-vline 
WA_V_OIGSVC_STR-RECFLGPTL sy-vline 
WA_V_OIGSVC_STR-RECFLGLOV sy-vline 
WA_V_OIGSVC_STR-OIG_SSTSF sy-vline      INTO ld_text SEPARATED BY SPACE.

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