ABAP Select data from SAP table JBVBV2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP JBVBV2 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 JBVBV2. 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 JBVBV2 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_JBVBV2 TYPE STANDARD TABLE OF JBVBV2,
      WA_JBVBV2 TYPE JBVBV2,
      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: <JBVBV2> TYPE JBVBV2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_JBVBV2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM JBVBV2
  INTO TABLE IT_JBVBV2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JBVBV2
*  INTO TABLE @DATA(IT_JBVBV22).
*--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_JBVBV2 INDEX 1 INTO DATA(WA_JBVBV22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_JBVBV2 ASSIGNING <JBVBV2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JBVBV2>-MANDT = 1.
<JBVBV2>-VARART = 1.
<JBVBV2>-XTEXT = 1.
<JBVBV2>-VARTYP = 1.
<JBVBV2>-PSCALCP = 1.

ENDLOOP.

LOOP AT IT_JBVBV2 INTO WA_JBVBV2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JBVBV2-VKVOLART, sy-vline,
  WA_JBVBV2-VKKORART, sy-vline,
  WA_JBVBV2-SSCALCP, sy-vline,
  WA_JBVBV2-SIMTYP, sy-vline,
  WA_JBVBV2-HISTORY, sy-vline,
  WA_JBVBV2-UNWIND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JBVBV2 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_JBVBV2 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_JBVBV2 INTO WA_JBVBV2.


*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_JBVBV2_STR, 
MANDT TYPE STRING,
VARART TYPE STRING,
XTEXT TYPE STRING,
VARTYP TYPE STRING,
PSCALCP TYPE STRING,
VKVOLART TYPE STRING,
VKKORART TYPE STRING,
SSCALCP TYPE STRING,
SIMTYP TYPE STRING,
HISTORY TYPE STRING,
UNWIND TYPE STRING,
KALENDER TYPE STRING,
MISSLIMIT TYPE STRING,
KONFIDENZ TYPE STRING,
ALGORITHM TYPE STRING,
SAMPTYP TYPE STRING,
SIMLAUF TYPE STRING,
DESTINATION TYPE STRING,
FUNCTION TYPE STRING,
XVAR TYPE STRING,
XGUV TYPE STRING,
XROOT TYPE STRING,
SEED TYPE STRING,
AUTGR TYPE STRING,
DELTAONLY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JBVBV2_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_JBVBV2_STR-MANDT sy-vline 
WA_JBVBV2_STR-VARART sy-vline 
WA_JBVBV2_STR-XTEXT sy-vline 
WA_JBVBV2_STR-VARTYP sy-vline 
WA_JBVBV2_STR-PSCALCP sy-vline 
WA_JBVBV2_STR-VKVOLART sy-vline 
WA_JBVBV2_STR-VKKORART sy-vline 
WA_JBVBV2_STR-SSCALCP sy-vline 
WA_JBVBV2_STR-SIMTYP sy-vline 
WA_JBVBV2_STR-HISTORY sy-vline 
WA_JBVBV2_STR-UNWIND sy-vline 
WA_JBVBV2_STR-KALENDER sy-vline 
WA_JBVBV2_STR-MISSLIMIT sy-vline 
WA_JBVBV2_STR-KONFIDENZ sy-vline 
WA_JBVBV2_STR-ALGORITHM sy-vline 
WA_JBVBV2_STR-SAMPTYP sy-vline 
WA_JBVBV2_STR-SIMLAUF sy-vline 
WA_JBVBV2_STR-DESTINATION sy-vline 
WA_JBVBV2_STR-FUNCTION sy-vline 
WA_JBVBV2_STR-XVAR sy-vline 
WA_JBVBV2_STR-XGUV sy-vline 
WA_JBVBV2_STR-XROOT sy-vline 
WA_JBVBV2_STR-SEED sy-vline 
WA_JBVBV2_STR-AUTGR sy-vline 
WA_JBVBV2_STR-DELTAONLY sy-vline      INTO ld_text SEPARATED BY SPACE.

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