ABAP Select data from SAP table /AIF/V_VMAP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /AIF/V_VMAP 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 /AIF/V_VMAP. 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 /AIF/V_VMAP 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_/AIF/V_VMAP TYPE STANDARD TABLE OF /AIF/V_VMAP,
      WA_/AIF/V_VMAP TYPE /AIF/V_VMAP,
      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: </AIF/V_VMAP> TYPE /AIF/V_VMAP.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /AIF/V_VMAP
  INTO TABLE IT_/AIF/V_VMAP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /AIF/V_VMAP
*  INTO TABLE @DATA(IT_/AIF/V_VMAP2).
*--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_/AIF/V_VMAP INDEX 1 INTO DATA(WA_/AIF/V_VMAP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/AIF/V_VMAP ASSIGNING </AIF/V_VMAP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</AIF/V_VMAP>-MANDT = 1.
</AIF/V_VMAP>-NS = 1.
</AIF/V_VMAP>-VMAPNAME = 1.
</AIF/V_VMAP>-DESCRIPTION = 1.
</AIF/V_VMAP>-CONVDTELBEFORE = 1.

ENDLOOP.

LOOP AT IT_/AIF/V_VMAP INTO WA_/AIF/V_VMAP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/AIF/V_VMAP-CONVEXITBEFORE, sy-vline,
  WA_/AIF/V_VMAP-CONVEXITDIRBEF, sy-vline,
  WA_/AIF/V_VMAP-TABNAME, sy-vline,
  WA_/AIF/V_VMAP-FIELDNAME, sy-vline,
  WA_/AIF/V_VMAP-WHERECONDITION, sy-vline,
  WA_/AIF/V_VMAP-DONTBUFFER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/AIF/V_VMAP 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_/AIF/V_VMAP 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_/AIF/V_VMAP INTO WA_/AIF/V_VMAP.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/AIF/V_VMAP_STR, 
MANDT TYPE STRING,
NS TYPE STRING,
VMAPNAME TYPE STRING,
DESCRIPTION TYPE STRING,
CONVDTELBEFORE TYPE STRING,
CONVEXITBEFORE TYPE STRING,
CONVEXITDIRBEF TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
WHERECONDITION TYPE STRING,
DONTBUFFER TYPE STRING,
VALMAPFUNCTION TYPE STRING,
USEDEFAULTVALUE TYPE STRING,
DEFAULTVALUE TYPE STRING,
CONVDTELAFTER TYPE STRING,
CONVEXITAFTER TYPE STRING,
CONVEXITDIRAFT TYPE STRING,
NOTSYSDEPENDENT TYPE STRING,
DATAELEMENT TYPE STRING,
DATAELEMENT1 TYPE STRING,
DATAELEMENT2 TYPE STRING,
DATAELEMENT3 TYPE STRING,
DATAELEMENT4 TYPE STRING,
DATAELEMENT5 TYPE STRING,
NROFEXTVALUES TYPE STRING,
SINGLEMULTI TYPE STRING,
CUST_MASTER TYPE STRING,
ALT_TRANSACTION TYPE STRING,
VIEW_NAME TYPE STRING,
VIEWCLUSTER_NAME TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
NSCHECK TYPE STRING,
AIFCHECK TYPE STRING,
CHKBA TYPE STRING,
USE_VP_NO TYPE STRING,
USE_VP_DATES TYPE STRING,
CHK_UNIQUE_EXT TYPE STRING,
CHK_UNIQUE_INT TYPE STRING,
CHK_UNIQUE_COM TYPE STRING,
BRF_APPL_NAME TYPE STRING,
BRF_FUNC_NAME TYPE STRING,
BRF_FUNC_UID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/AIF/V_VMAP_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_/AIF/V_VMAP_STR-MANDT sy-vline 
WA_/AIF/V_VMAP_STR-NS sy-vline 
WA_/AIF/V_VMAP_STR-VMAPNAME sy-vline 
WA_/AIF/V_VMAP_STR-DESCRIPTION sy-vline 
WA_/AIF/V_VMAP_STR-CONVDTELBEFORE sy-vline 
WA_/AIF/V_VMAP_STR-CONVEXITBEFORE sy-vline 
WA_/AIF/V_VMAP_STR-CONVEXITDIRBEF sy-vline 
WA_/AIF/V_VMAP_STR-TABNAME sy-vline 
WA_/AIF/V_VMAP_STR-FIELDNAME sy-vline 
WA_/AIF/V_VMAP_STR-WHERECONDITION sy-vline 
WA_/AIF/V_VMAP_STR-DONTBUFFER sy-vline 
WA_/AIF/V_VMAP_STR-VALMAPFUNCTION sy-vline 
WA_/AIF/V_VMAP_STR-USEDEFAULTVALUE sy-vline 
WA_/AIF/V_VMAP_STR-DEFAULTVALUE sy-vline 
WA_/AIF/V_VMAP_STR-CONVDTELAFTER sy-vline 
WA_/AIF/V_VMAP_STR-CONVEXITAFTER sy-vline 
WA_/AIF/V_VMAP_STR-CONVEXITDIRAFT sy-vline 
WA_/AIF/V_VMAP_STR-NOTSYSDEPENDENT sy-vline 
WA_/AIF/V_VMAP_STR-DATAELEMENT sy-vline 
WA_/AIF/V_VMAP_STR-DATAELEMENT1 sy-vline 
WA_/AIF/V_VMAP_STR-DATAELEMENT2 sy-vline 
WA_/AIF/V_VMAP_STR-DATAELEMENT3 sy-vline 
WA_/AIF/V_VMAP_STR-DATAELEMENT4 sy-vline 
WA_/AIF/V_VMAP_STR-DATAELEMENT5 sy-vline 
WA_/AIF/V_VMAP_STR-NROFEXTVALUES sy-vline 
WA_/AIF/V_VMAP_STR-SINGLEMULTI sy-vline 
WA_/AIF/V_VMAP_STR-CUST_MASTER sy-vline 
WA_/AIF/V_VMAP_STR-ALT_TRANSACTION sy-vline 
WA_/AIF/V_VMAP_STR-VIEW_NAME sy-vline 
WA_/AIF/V_VMAP_STR-VIEWCLUSTER_NAME sy-vline 
WA_/AIF/V_VMAP_STR-MSGID sy-vline 
WA_/AIF/V_VMAP_STR-MSGNO sy-vline 
WA_/AIF/V_VMAP_STR-MSGV1 sy-vline 
WA_/AIF/V_VMAP_STR-MSGV2 sy-vline 
WA_/AIF/V_VMAP_STR-MSGV3 sy-vline 
WA_/AIF/V_VMAP_STR-MSGV4 sy-vline 
WA_/AIF/V_VMAP_STR-NSCHECK sy-vline 
WA_/AIF/V_VMAP_STR-AIFCHECK sy-vline 
WA_/AIF/V_VMAP_STR-CHKBA sy-vline 
WA_/AIF/V_VMAP_STR-USE_VP_NO sy-vline 
WA_/AIF/V_VMAP_STR-USE_VP_DATES sy-vline 
WA_/AIF/V_VMAP_STR-CHK_UNIQUE_EXT sy-vline 
WA_/AIF/V_VMAP_STR-CHK_UNIQUE_INT sy-vline 
WA_/AIF/V_VMAP_STR-CHK_UNIQUE_COM sy-vline 
WA_/AIF/V_VMAP_STR-BRF_APPL_NAME sy-vline 
WA_/AIF/V_VMAP_STR-BRF_FUNC_NAME sy-vline 
WA_/AIF/V_VMAP_STR-BRF_FUNC_UID sy-vline      INTO ld_text SEPARATED BY SPACE.

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