ABAP Select data from SAP table AVMSVHIS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AVMSVHIS
*  INTO TABLE @DATA(IT_AVMSVHIS2).
*--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_AVMSVHIS INDEX 1 INTO DATA(WA_AVMSVHIS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AVMSVHIS>-MANDT = 1.
<AVMSVHIS>-VMSVEHICLEUUID = 1.
<AVMSVHIS>-VMSVEHICLEACTIONDATETIME = 1.
<AVMSVHIS>-VMSVEHICLEACTIONDOCTYPE = 1.
<AVMSVHIS>-CONFIGURATIONNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AVMSVHIS-VMSVEHICLEINTERLINKINGACTION, sy-vline,
  WA_AVMSVHIS-VMSVEHICLEACTION, sy-vline,
  WA_AVMSVHIS-VMSVEHICLEPRIMACTIONCONTROL, sy-vline,
  WA_AVMSVHIS-VMSVEHICLEOLDPRIMARYSTATUS, sy-vline,
  WA_AVMSVHIS-VMSVEHICLENEWPRIMARYSTATUS, sy-vline,
  WA_AVMSVHIS-VMSVEHICLESECDRYACTIONCONTROL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AVMSVHIS 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_AVMSVHIS 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_AVMSVHIS INTO WA_AVMSVHIS.


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

*Conversion exit ALPHA, internal->external for field LOGICALSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AVMSVHIS-LOGICALSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AVMSVHIS-LOGICALSYSTEM.
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_AVMSVHIS_STR, 
MANDT TYPE STRING,
VMSVEHICLEUUID TYPE STRING,
VMSVEHICLEACTIONDATETIME TYPE STRING,
VMSVEHICLEACTIONDOCTYPE TYPE STRING,
CONFIGURATIONNUMBER TYPE STRING,
VMSVEHICLEINTERLINKINGACTION TYPE STRING,
VMSVEHICLEACTION TYPE STRING,
VMSVEHICLEPRIMACTIONCONTROL TYPE STRING,
VMSVEHICLEOLDPRIMARYSTATUS TYPE STRING,
VMSVEHICLENEWPRIMARYSTATUS TYPE STRING,
VMSVEHICLESECDRYACTIONCONTROL TYPE STRING,
VMSVEHICLEOLDSECONDARYSTATUS TYPE STRING,
VMSVEHICLENEWSECONDARYSTATUS TYPE STRING,
VMSVEHICLELOCATION TYPE STRING,
VMSVEHICLECUSTOMER TYPE STRING,
CREATEDBYUSERNAME TYPE STRING,
LOGICALSYSTEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AVMSVHIS_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_AVMSVHIS_STR-MANDT sy-vline 
WA_AVMSVHIS_STR-VMSVEHICLEUUID sy-vline 
WA_AVMSVHIS_STR-VMSVEHICLEACTIONDATETIME sy-vline 
WA_AVMSVHIS_STR-VMSVEHICLEACTIONDOCTYPE sy-vline 
WA_AVMSVHIS_STR-CONFIGURATIONNUMBER sy-vline 
WA_AVMSVHIS_STR-VMSVEHICLEINTERLINKINGACTION sy-vline 
WA_AVMSVHIS_STR-VMSVEHICLEACTION sy-vline 
WA_AVMSVHIS_STR-VMSVEHICLEPRIMACTIONCONTROL sy-vline 
WA_AVMSVHIS_STR-VMSVEHICLEOLDPRIMARYSTATUS sy-vline 
WA_AVMSVHIS_STR-VMSVEHICLENEWPRIMARYSTATUS sy-vline 
WA_AVMSVHIS_STR-VMSVEHICLESECDRYACTIONCONTROL sy-vline 
WA_AVMSVHIS_STR-VMSVEHICLEOLDSECONDARYSTATUS sy-vline 
WA_AVMSVHIS_STR-VMSVEHICLENEWSECONDARYSTATUS sy-vline 
WA_AVMSVHIS_STR-VMSVEHICLELOCATION sy-vline 
WA_AVMSVHIS_STR-VMSVEHICLECUSTOMER sy-vline 
WA_AVMSVHIS_STR-CREATEDBYUSERNAME sy-vline 
WA_AVMSVHIS_STR-LOGICALSYSTEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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