ABAP Select data from SAP table /BEV3/CHVABSVG into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /BEV3/CHVABSVG 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 /BEV3/CHVABSVG. 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 /BEV3/CHVABSVG 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_/BEV3/CHVABSVG TYPE STANDARD TABLE OF /BEV3/CHVABSVG,
      WA_/BEV3/CHVABSVG TYPE /BEV3/CHVABSVG,
      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: </BEV3/CHVABSVG> TYPE /BEV3/CHVABSVG.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/BEV3/CHVABSVG.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /BEV3/CHVABSVG
  INTO TABLE IT_/BEV3/CHVABSVG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /BEV3/CHVABSVG
*  INTO TABLE @DATA(IT_/BEV3/CHVABSVG2).
*--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_/BEV3/CHVABSVG INDEX 1 INTO DATA(WA_/BEV3/CHVABSVG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/BEV3/CHVABSVG ASSIGNING </BEV3/CHVABSVG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</BEV3/CHVABSVG>-MANDT = 1.
</BEV3/CHVABSVG>-YVWDNR = 1.
</BEV3/CHVABSVG>-VBKL = 1.
</BEV3/CHVABSVG>-RI = 1.
</BEV3/CHVABSVG>-VBIN = 1.

ENDLOOP.

LOOP AT IT_/BEV3/CHVABSVG INTO WA_/BEV3/CHVABSVG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/BEV3/CHVABSVG-VBNR, sy-vline,
  WA_/BEV3/CHVABSVG-VBKL_WL, sy-vline,
  WA_/BEV3/CHVABSVG-RI_WL, sy-vline,
  WA_/BEV3/CHVABSVG-VBIN_WL, sy-vline,
  WA_/BEV3/CHVABSVG-MEINH, sy-vline,
  WA_/BEV3/CHVABSVG-BEWMENGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/BEV3/CHVABSVG 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_/BEV3/CHVABSVG 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_/BEV3/CHVABSVG INTO WA_/BEV3/CHVABSVG.


*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 CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/BEV3/CHVABSVG-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/BEV3/CHVABSVG-MEINH.
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_/BEV3/CHVABSVG_STR, 
MANDT TYPE STRING,
YVWDNR TYPE STRING,
VBKL TYPE STRING,
RI TYPE STRING,
VBIN TYPE STRING,
VBNR TYPE STRING,
VBKL_WL TYPE STRING,
RI_WL TYPE STRING,
VBIN_WL TYPE STRING,
MEINH TYPE STRING,
BEWMENGE TYPE STRING,
RUNDUNG TYPE STRING,
VERGBETR TYPE STRING,
BEDINGG1 TYPE STRING,
BEDINGG2 TYPE STRING,
BEDINGG3 TYPE STRING,
CHVVBEDING TYPE STRING,
VBDTA TYPE STRING,
VBDTB TYPE STRING,
ANZVBNR TYPE STRING,
ANZWIND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/BEV3/CHVABSVG_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_/BEV3/CHVABSVG_STR-MANDT sy-vline 
WA_/BEV3/CHVABSVG_STR-YVWDNR sy-vline 
WA_/BEV3/CHVABSVG_STR-VBKL sy-vline 
WA_/BEV3/CHVABSVG_STR-RI sy-vline 
WA_/BEV3/CHVABSVG_STR-VBIN sy-vline 
WA_/BEV3/CHVABSVG_STR-VBNR sy-vline 
WA_/BEV3/CHVABSVG_STR-VBKL_WL sy-vline 
WA_/BEV3/CHVABSVG_STR-RI_WL sy-vline 
WA_/BEV3/CHVABSVG_STR-VBIN_WL sy-vline 
WA_/BEV3/CHVABSVG_STR-MEINH sy-vline 
WA_/BEV3/CHVABSVG_STR-BEWMENGE sy-vline 
WA_/BEV3/CHVABSVG_STR-RUNDUNG sy-vline 
WA_/BEV3/CHVABSVG_STR-VERGBETR sy-vline 
WA_/BEV3/CHVABSVG_STR-BEDINGG1 sy-vline 
WA_/BEV3/CHVABSVG_STR-BEDINGG2 sy-vline 
WA_/BEV3/CHVABSVG_STR-BEDINGG3 sy-vline 
WA_/BEV3/CHVABSVG_STR-CHVVBEDING sy-vline 
WA_/BEV3/CHVABSVG_STR-VBDTA sy-vline 
WA_/BEV3/CHVABSVG_STR-VBDTB sy-vline 
WA_/BEV3/CHVABSVG_STR-ANZVBNR sy-vline 
WA_/BEV3/CHVABSVG_STR-ANZWIND sy-vline      INTO ld_text SEPARATED BY SPACE.

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