ABAP Select data from SAP table VFSCAHVB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VFSCAHVB
*  INTO TABLE @DATA(IT_VFSCAHVB2).
*--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_VFSCAHVB INDEX 1 INTO DATA(WA_VFSCAHVB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VFSCAHVB>-MANDT = 1.
<VFSCAHVB>-SCAID = 1.
<VFSCAHVB>-SCATYP = 1.
<VFSCAHVB>-SCABAS = 1.
<VFSCAHVB>-SCUOF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VFSCAHVB-KPEIN, sy-vline,
  WA_VFSCAHVB-KMEIN, sy-vline,
  WA_VFSCAHVB-KRECH, sy-vline,
  WA_VFSCAHVB-LPEIN, sy-vline,
  WA_VFSCAHVB-SCALEN, sy-vline,
  WA_VFSCAHVB-TSCALEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VFSCAHVB 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_VFSCAHVB 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_VFSCAHVB INTO WA_VFSCAHVB.


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

*Conversion exit CUNIT, internal->external for field SCUOF
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VFSCAHVB-SCUOF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VFSCAHVB-SCUOF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VFSCAHVB-KMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VFSCAHVB-KMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SCAID_OLD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VFSCAHVB-SCAID_OLD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VFSCAHVB-SCAID_OLD.
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_VFSCAHVB_STR, 
MANDT TYPE STRING,
SCAID TYPE STRING,
SCATYP TYPE STRING,
SCABAS TYPE STRING,
SCUOF TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
KRECH TYPE STRING,
LPEIN TYPE STRING,
SCALEN TYPE STRING,
TSCALEN TYPE STRING,
MINFLG TYPE STRING,
MAXFLG TYPE STRING,
CCBVRR TYPE STRING,
SCBVRR TYPE STRING,
CTBVRR TYPE STRING,
KAPPL TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERZET TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AEZET TYPE STRING,
POS_VAL TYPE STRING,
SLFNRL TYPE STRING,
SCAID_OLD TYPE STRING,
VIM_MARKED TYPE STRING,
UPDKZ TYPE STRING,
CHANGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VFSCAHVB_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_VFSCAHVB_STR-MANDT sy-vline 
WA_VFSCAHVB_STR-SCAID sy-vline 
WA_VFSCAHVB_STR-SCATYP sy-vline 
WA_VFSCAHVB_STR-SCABAS sy-vline 
WA_VFSCAHVB_STR-SCUOF sy-vline 
WA_VFSCAHVB_STR-KPEIN sy-vline 
WA_VFSCAHVB_STR-KMEIN sy-vline 
WA_VFSCAHVB_STR-KRECH sy-vline 
WA_VFSCAHVB_STR-LPEIN sy-vline 
WA_VFSCAHVB_STR-SCALEN sy-vline 
WA_VFSCAHVB_STR-TSCALEN sy-vline 
WA_VFSCAHVB_STR-MINFLG sy-vline 
WA_VFSCAHVB_STR-MAXFLG sy-vline 
WA_VFSCAHVB_STR-CCBVRR sy-vline 
WA_VFSCAHVB_STR-SCBVRR sy-vline 
WA_VFSCAHVB_STR-CTBVRR sy-vline 
WA_VFSCAHVB_STR-KAPPL sy-vline 
WA_VFSCAHVB_STR-ERNAM sy-vline 
WA_VFSCAHVB_STR-ERDAT sy-vline 
WA_VFSCAHVB_STR-ERZET sy-vline 
WA_VFSCAHVB_STR-AENAM sy-vline 
WA_VFSCAHVB_STR-AEDAT sy-vline 
WA_VFSCAHVB_STR-AEZET sy-vline 
WA_VFSCAHVB_STR-POS_VAL sy-vline 
WA_VFSCAHVB_STR-SLFNRL sy-vline 
WA_VFSCAHVB_STR-SCAID_OLD sy-vline 
WA_VFSCAHVB_STR-VIM_MARKED sy-vline 
WA_VFSCAHVB_STR-UPDKZ sy-vline 
WA_VFSCAHVB_STR-CHANGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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