ABAP Select data from SAP table V_OIO_LD_AREA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_OIO_LD_AREA 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_OIO_LD_AREA. 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_OIO_LD_AREA 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_OIO_LD_AREA TYPE STANDARD TABLE OF V_OIO_LD_AREA,
      WA_V_OIO_LD_AREA TYPE V_OIO_LD_AREA,
      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_OIO_LD_AREA> TYPE V_OIO_LD_AREA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_OIO_LD_AREA
*  INTO TABLE @DATA(IT_V_OIO_LD_AREA2).
*--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_OIO_LD_AREA INDEX 1 INTO DATA(WA_V_OIO_LD_AREA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_OIO_LD_AREA>-MANDT = 1.
<V_OIO_LD_AREA>-TKNUM = 1.
<V_OIO_LD_AREA>-VBTYP = 1.
<V_OIO_LD_AREA>-SHTYP = 1.
<V_OIO_LD_AREA>-TPLST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_OIO_LD_AREA-ERNAM, sy-vline,
  WA_V_OIO_LD_AREA-ERDAT, sy-vline,
  WA_V_OIO_LD_AREA-ERZET, sy-vline,
  WA_V_OIO_LD_AREA-AENAM, sy-vline,
  WA_V_OIO_LD_AREA-AEDAT, sy-vline,
  WA_V_OIO_LD_AREA-AEZET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_OIO_LD_AREA 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_OIO_LD_AREA 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_OIO_LD_AREA INTO WA_V_OIO_LD_AREA.


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

*Conversion exit CUNIT, internal->external for field DTMEG
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_OIO_LD_AREA-DTMEG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OIO_LD_AREA-DTMEG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DTMEV
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_OIO_LD_AREA-DTMEV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OIO_LD_AREA-DTMEV.
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_OIO_LD_AREA_STR, 
MANDT TYPE STRING,
TKNUM TYPE STRING,
VBTYP TYPE STRING,
SHTYP TYPE STRING,
TPLST TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERZET TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AEZET TYPE STRING,
VSBED TYPE STRING,
ROUTE TYPE STRING,
SIGNI TYPE STRING,
EXTI1 TYPE STRING,
EXTI2 TYPE STRING,
TPBEZ TYPE STRING,
STDIS TYPE STRING,
PKSTK TYPE STRING,
DTMEG TYPE STRING,
DTMEV TYPE STRING,
HANDLE TYPE STRING,
ADD01 TYPE STRING,
ADD02 TYPE STRING,
ADD03 TYPE STRING,
ADD04 TYPE STRING,
TEXT1 TYPE STRING,
TEXT2 TYPE STRING,
TEXT3 TYPE STRING,
TEXT4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_OIO_LD_AREA_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_OIO_LD_AREA_STR-MANDT sy-vline 
WA_V_OIO_LD_AREA_STR-TKNUM sy-vline 
WA_V_OIO_LD_AREA_STR-VBTYP sy-vline 
WA_V_OIO_LD_AREA_STR-SHTYP sy-vline 
WA_V_OIO_LD_AREA_STR-TPLST sy-vline 
WA_V_OIO_LD_AREA_STR-ERNAM sy-vline 
WA_V_OIO_LD_AREA_STR-ERDAT sy-vline 
WA_V_OIO_LD_AREA_STR-ERZET sy-vline 
WA_V_OIO_LD_AREA_STR-AENAM sy-vline 
WA_V_OIO_LD_AREA_STR-AEDAT sy-vline 
WA_V_OIO_LD_AREA_STR-AEZET sy-vline 
WA_V_OIO_LD_AREA_STR-VSBED sy-vline 
WA_V_OIO_LD_AREA_STR-ROUTE sy-vline 
WA_V_OIO_LD_AREA_STR-SIGNI sy-vline 
WA_V_OIO_LD_AREA_STR-EXTI1 sy-vline 
WA_V_OIO_LD_AREA_STR-EXTI2 sy-vline 
WA_V_OIO_LD_AREA_STR-TPBEZ sy-vline 
WA_V_OIO_LD_AREA_STR-STDIS sy-vline 
WA_V_OIO_LD_AREA_STR-PKSTK sy-vline 
WA_V_OIO_LD_AREA_STR-DTMEG sy-vline 
WA_V_OIO_LD_AREA_STR-DTMEV sy-vline 
WA_V_OIO_LD_AREA_STR-HANDLE sy-vline 
WA_V_OIO_LD_AREA_STR-ADD01 sy-vline 
WA_V_OIO_LD_AREA_STR-ADD02 sy-vline 
WA_V_OIO_LD_AREA_STR-ADD03 sy-vline 
WA_V_OIO_LD_AREA_STR-ADD04 sy-vline 
WA_V_OIO_LD_AREA_STR-TEXT1 sy-vline 
WA_V_OIO_LD_AREA_STR-TEXT2 sy-vline 
WA_V_OIO_LD_AREA_STR-TEXT3 sy-vline 
WA_V_OIO_LD_AREA_STR-TEXT4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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