ABAP Select data from SAP table VDB_ISTNLMSVACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VDB_ISTNLMSVACT
*  INTO TABLE @DATA(IT_VDB_ISTNLMSVACT2).
*--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_VDB_ISTNLMSVACT INDEX 1 INTO DATA(WA_VDB_ISTNLMSVACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VDB_ISTNLMSVACT>-MANDT = 1.
<VDB_ISTNLMSVACT>-CONFIGID = 1.
<VDB_ISTNLMSVACT>-ACTIONID = 1.
<VDB_ISTNLMSVACT>-OBJECT_TYPE = 1.
<VDB_ISTNLMSVACT>-TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VDB_ISTNLMSVACT-ACTION_POSITION, sy-vline,
  WA_VDB_ISTNLMSVACT-CONTAINERNO, sy-vline,
  WA_VDB_ISTNLMSVACT-HIDE, sy-vline,
  WA_VDB_ISTNLMSVACT-BO_NAME, sy-vline,
  WA_VDB_ISTNLMSVACT-BO_OPERATION, sy-vline,
  WA_VDB_ISTNLMSVACT-BO_SYSTEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VDB_ISTNLMSVACT 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_VDB_ISTNLMSVACT 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_VDB_ISTNLMSVACT INTO WA_VDB_ISTNLMSVACT.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_VDB_ISTNLMSVACT-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VDB_ISTNLMSVACT-SPRAS.
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_VDB_ISTNLMSVACT_STR, 
MANDT TYPE STRING,
CONFIGID TYPE STRING,
ACTIONID TYPE STRING,
OBJECT_TYPE TYPE STRING,
TYPE TYPE STRING,
ACTION_POSITION TYPE STRING,
CONTAINERNO TYPE STRING,
HIDE TYPE STRING,
BO_NAME TYPE STRING,
BO_OPERATION TYPE STRING,
BO_SYSTEM TYPE STRING,
EVENT_NAME TYPE STRING,
NAMESPACE TYPE STRING,
SPRAS TYPE STRING,
DESCRIPTION TYPE STRING,
TOOLTIP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VDB_ISTNLMSVACT_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_VDB_ISTNLMSVACT_STR-MANDT sy-vline 
WA_VDB_ISTNLMSVACT_STR-CONFIGID sy-vline 
WA_VDB_ISTNLMSVACT_STR-ACTIONID sy-vline 
WA_VDB_ISTNLMSVACT_STR-OBJECT_TYPE sy-vline 
WA_VDB_ISTNLMSVACT_STR-TYPE sy-vline 
WA_VDB_ISTNLMSVACT_STR-ACTION_POSITION sy-vline 
WA_VDB_ISTNLMSVACT_STR-CONTAINERNO sy-vline 
WA_VDB_ISTNLMSVACT_STR-HIDE sy-vline 
WA_VDB_ISTNLMSVACT_STR-BO_NAME sy-vline 
WA_VDB_ISTNLMSVACT_STR-BO_OPERATION sy-vline 
WA_VDB_ISTNLMSVACT_STR-BO_SYSTEM sy-vline 
WA_VDB_ISTNLMSVACT_STR-EVENT_NAME sy-vline 
WA_VDB_ISTNLMSVACT_STR-NAMESPACE sy-vline 
WA_VDB_ISTNLMSVACT_STR-SPRAS sy-vline 
WA_VDB_ISTNLMSVACT_STR-DESCRIPTION sy-vline 
WA_VDB_ISTNLMSVACT_STR-TOOLTIP sy-vline      INTO ld_text SEPARATED BY SPACE.

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