ABAP Select data from SAP table /AIF/V_FMAPV 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_FMAPV 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_FMAPV. 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_FMAPV 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_FMAPV TYPE STANDARD TABLE OF /AIF/V_FMAPV,
      WA_/AIF/V_FMAPV TYPE /AIF/V_FMAPV,
      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_FMAPV> TYPE /AIF/V_FMAPV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /AIF/V_FMAPV
*  INTO TABLE @DATA(IT_/AIF/V_FMAPV2).
*--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_FMAPV INDEX 1 INTO DATA(WA_/AIF/V_FMAPV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</AIF/V_FMAPV>-MANDT = 1.
</AIF/V_FMAPV>-VARIANT_NS = 1.
</AIF/V_FMAPV>-VARIANT_NAME = 1.
</AIF/V_FMAPV>-FMAPNR = 1.
</AIF/V_FMAPV>-NS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/AIF/V_FMAPV-IFNAME, sy-vline,
  WA_/AIF/V_FMAPV-IFVERSION, sy-vline,
  WA_/AIF/V_FMAPV-RECTYPE, sy-vline,
  WA_/AIF/V_FMAPV-SMAPNR, sy-vline,
  WA_/AIF/V_FMAPV-FIELDNAME, sy-vline,
  WA_/AIF/V_FMAPV-SAP_FIELDNAME1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/AIF/V_FMAPV 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_FMAPV 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_FMAPV INTO WA_/AIF/V_FMAPV.


*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 ROOTS, internal->external for field RECTYPE
CALL FUNCTION 'CONVERSION_EXIT_ROOTS_OUTPUT'
  EXPORTING
    input =                      WA_/AIF/V_FMAPV-RECTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/AIF/V_FMAPV-RECTYPE.
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_/AIF/V_FMAPV_STR, 
MANDT TYPE STRING,
VARIANT_NS TYPE STRING,
VARIANT_NAME TYPE STRING,
FMAPNR TYPE STRING,
NS TYPE STRING,
IFNAME TYPE STRING,
IFVERSION TYPE STRING,
RECTYPE TYPE STRING,
SMAPNR TYPE STRING,
FIELDNAME TYPE STRING,
SAP_FIELDNAME1 TYPE STRING,
SAP_FIELDNAME2 TYPE STRING,
SAP_FIELDNAME3 TYPE STRING,
SAP_FIELDNAME4 TYPE STRING,
SAP_FIELDNAME5 TYPE STRING,
FIELDNAME_LINK TYPE STRING,
CONVDTEL TYPE STRING,
CONVEXIT TYPE STRING,
CONVEXITDIR TYPE STRING,
NS_VMAPNAME TYPE STRING,
VMAPNAME TYPE STRING,
VALMAPFUNCTION TYPE STRING,
FIELDOFFSET TYPE STRING,
FIELDLENGTH TYPE STRING,
FIELDOFFSET1 TYPE STRING,
FIELDLENGTH1 TYPE STRING,
FIELDOFFSET2 TYPE STRING,
FIELDLENGTH2 TYPE STRING,
FIELDOFFSET3 TYPE STRING,
FIELDLENGTH3 TYPE STRING,
FIELDOFFSET4 TYPE STRING,
FIELDLENGTH4 TYPE STRING,
FIELDOFFSET5 TYPE STRING,
FIELDLENGTH5 TYPE STRING,
SEPARATORSTRING TYPE STRING,
TABNAME TYPE STRING,
TABSELFIELD TYPE STRING,
OPERATOR TYPE STRING,
TABSELCOMPFIELD TYPE STRING,
NSTABSELVALUE TYPE STRING,
TABSELVALUENAME TYPE STRING,
TABSELVALUE TYPE STRING,
TABSELFORMAT TYPE STRING,
TABSELFIELD2 TYPE STRING,
OPERATOR2 TYPE STRING,
TABSELCOMPFIELD2 TYPE STRING,
NSTABSELVALUE2 TYPE STRING,
TABSELVALUENAME2 TYPE STRING,
TABSELVALUE2 TYPE STRING,
TABSELFORMAT2 TYPE STRING,
TABSELFIELD3 TYPE STRING,
OPERATOR3 TYPE STRING,
TABSELCOMPFIELD3 TYPE STRING,
NSTABSELVALUE3 TYPE STRING,
TABSELVALUENAME3 TYPE STRING,
TABSELVALUE3 TYPE STRING,
TABSELFORMAT3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/AIF/V_FMAPV_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_FMAPV_STR-MANDT sy-vline 
WA_/AIF/V_FMAPV_STR-VARIANT_NS sy-vline 
WA_/AIF/V_FMAPV_STR-VARIANT_NAME sy-vline 
WA_/AIF/V_FMAPV_STR-FMAPNR sy-vline 
WA_/AIF/V_FMAPV_STR-NS sy-vline 
WA_/AIF/V_FMAPV_STR-IFNAME sy-vline 
WA_/AIF/V_FMAPV_STR-IFVERSION sy-vline 
WA_/AIF/V_FMAPV_STR-RECTYPE sy-vline 
WA_/AIF/V_FMAPV_STR-SMAPNR sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDNAME sy-vline 
WA_/AIF/V_FMAPV_STR-SAP_FIELDNAME1 sy-vline 
WA_/AIF/V_FMAPV_STR-SAP_FIELDNAME2 sy-vline 
WA_/AIF/V_FMAPV_STR-SAP_FIELDNAME3 sy-vline 
WA_/AIF/V_FMAPV_STR-SAP_FIELDNAME4 sy-vline 
WA_/AIF/V_FMAPV_STR-SAP_FIELDNAME5 sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDNAME_LINK sy-vline 
WA_/AIF/V_FMAPV_STR-CONVDTEL sy-vline 
WA_/AIF/V_FMAPV_STR-CONVEXIT sy-vline 
WA_/AIF/V_FMAPV_STR-CONVEXITDIR sy-vline 
WA_/AIF/V_FMAPV_STR-NS_VMAPNAME sy-vline 
WA_/AIF/V_FMAPV_STR-VMAPNAME sy-vline 
WA_/AIF/V_FMAPV_STR-VALMAPFUNCTION sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDOFFSET sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDLENGTH sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDOFFSET1 sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDLENGTH1 sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDOFFSET2 sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDLENGTH2 sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDOFFSET3 sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDLENGTH3 sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDOFFSET4 sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDLENGTH4 sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDOFFSET5 sy-vline 
WA_/AIF/V_FMAPV_STR-FIELDLENGTH5 sy-vline 
WA_/AIF/V_FMAPV_STR-SEPARATORSTRING sy-vline 
WA_/AIF/V_FMAPV_STR-TABNAME sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELFIELD sy-vline 
WA_/AIF/V_FMAPV_STR-OPERATOR sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELCOMPFIELD sy-vline 
WA_/AIF/V_FMAPV_STR-NSTABSELVALUE sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELVALUENAME sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELVALUE sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELFORMAT sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELFIELD2 sy-vline 
WA_/AIF/V_FMAPV_STR-OPERATOR2 sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELCOMPFIELD2 sy-vline 
WA_/AIF/V_FMAPV_STR-NSTABSELVALUE2 sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELVALUENAME2 sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELVALUE2 sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELFORMAT2 sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELFIELD3 sy-vline 
WA_/AIF/V_FMAPV_STR-OPERATOR3 sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELCOMPFIELD3 sy-vline 
WA_/AIF/V_FMAPV_STR-NSTABSELVALUE3 sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELVALUENAME3 sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELVALUE3 sy-vline 
WA_/AIF/V_FMAPV_STR-TABSELFORMAT3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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