ABAP Select data from SAP table V_OINSCTSWI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_OINSCTSWI 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_OINSCTSWI. 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_OINSCTSWI 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_OINSCTSWI TYPE STANDARD TABLE OF V_OINSCTSWI,
      WA_V_OINSCTSWI TYPE V_OINSCTSWI,
      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_OINSCTSWI> TYPE V_OINSCTSWI.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_OINSCTSWI
*  INTO TABLE @DATA(IT_V_OINSCTSWI2).
*--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_OINSCTSWI INDEX 1 INTO DATA(WA_V_OINSCTSWI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_OINSCTSWI>-MANDT = 1.
<V_OINSCTSWI>-ID = 1.
<V_OINSCTSWI>-BUKRS = 1.
<V_OINSCTSWI>-BUTXT = 1.
<V_OINSCTSWI>-NOMTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_OINSCTSWI-DESCR, sy-vline,
  WA_V_OINSCTSWI-NMSHTYPE, sy-vline,
  WA_V_OINSCTSWI-SHTYPDESC, sy-vline,
  WA_V_OINSCTSWI-VKTRA, sy-vline,
  WA_V_OINSCTSWI-BEZEI, sy-vline,
  WA_V_OINSCTSWI-NOMST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_OINSCTSWI 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_OINSCTSWI 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_OINSCTSWI INTO WA_V_OINSCTSWI.


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

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

*Conversion exit TSTPS, internal->external for field CREATED_ON
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_V_OINSCTSWI-CREATED_ON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OINSCTSWI-CREATED_ON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field CHANGED_ON
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_V_OINSCTSWI-CHANGED_ON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OINSCTSWI-CHANGED_ON.
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_OINSCTSWI_STR, 
MANDT TYPE STRING,
ID TYPE STRING,
BUKRS TYPE STRING,
BUTXT TYPE STRING,
NOMTYP TYPE STRING,
DESCR TYPE STRING,
NMSHTYPE TYPE STRING,
SHTYPDESC TYPE STRING,
VKTRA TYPE STRING,
BEZEI TYPE STRING,
NOMST TYPE STRING,
SITYP TYPE STRING,
DESCRIPTION TYPE STRING,
DOCIND TYPE STRING,
PEGTYPE TYPE STRING,
PEG_TYPETXT TYPE STRING,
INCO1 TYPE STRING,
ISTAT TYPE STRING,
CREATED_ON TYPE STRING,
CREATED_BY TYPE STRING,
CHANGED_ON TYPE STRING,
CHANGED_BY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_OINSCTSWI_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_OINSCTSWI_STR-MANDT sy-vline 
WA_V_OINSCTSWI_STR-ID sy-vline 
WA_V_OINSCTSWI_STR-BUKRS sy-vline 
WA_V_OINSCTSWI_STR-BUTXT sy-vline 
WA_V_OINSCTSWI_STR-NOMTYP sy-vline 
WA_V_OINSCTSWI_STR-DESCR sy-vline 
WA_V_OINSCTSWI_STR-NMSHTYPE sy-vline 
WA_V_OINSCTSWI_STR-SHTYPDESC sy-vline 
WA_V_OINSCTSWI_STR-VKTRA sy-vline 
WA_V_OINSCTSWI_STR-BEZEI sy-vline 
WA_V_OINSCTSWI_STR-NOMST sy-vline 
WA_V_OINSCTSWI_STR-SITYP sy-vline 
WA_V_OINSCTSWI_STR-DESCRIPTION sy-vline 
WA_V_OINSCTSWI_STR-DOCIND sy-vline 
WA_V_OINSCTSWI_STR-PEGTYPE sy-vline 
WA_V_OINSCTSWI_STR-PEG_TYPETXT sy-vline 
WA_V_OINSCTSWI_STR-INCO1 sy-vline 
WA_V_OINSCTSWI_STR-ISTAT sy-vline 
WA_V_OINSCTSWI_STR-CREATED_ON sy-vline 
WA_V_OINSCTSWI_STR-CREATED_BY sy-vline 
WA_V_OINSCTSWI_STR-CHANGED_ON sy-vline 
WA_V_OINSCTSWI_STR-CHANGED_BY sy-vline      INTO ld_text SEPARATED BY SPACE.

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