ABAP Select data from SAP table VZBAVV_BCK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VZBAVV_BCK
*  INTO TABLE @DATA(IT_VZBAVV_BCK2).
*--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_VZBAVV_BCK INDEX 1 INTO DATA(WA_VZBAVV_BCK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VZBAVV_BCK>-MANDT = 1.
<VZBAVV_BCK>-RANTYP = 1.
<VZBAVV_BCK>-VVKEY = 1.
<VZBAVV_BCK>-DGUEL_AB = 1.
<VZBAVV_BCK>-SUDEC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VZBAVV_BCK-SSKZB, sy-vline,
  WA_VZBAVV_BCK-SDVNR, sy-vline,
  WA_VZBAVV_BCK-SUABNDV, sy-vline,
  WA_VZBAVV_BCK-SOEFFKL, sy-vline,
  WA_VZBAVV_BCK-RINUM, sy-vline,
  WA_VZBAVV_BCK-SSKZF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VZBAVV_BCK 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_VZBAVV_BCK 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_VZBAVV_BCK INTO WA_VZBAVV_BCK.


*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 VVKEY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VZBAVV_BCK-VVKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VZBAVV_BCK-VVKEY.
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_VZBAVV_BCK_STR, 
MANDT TYPE STRING,
RANTYP TYPE STRING,
VVKEY TYPE STRING,
DGUEL_AB TYPE STRING,
SUDEC TYPE STRING,
SSKZB TYPE STRING,
SDVNR TYPE STRING,
SUABNDV TYPE STRING,
SOEFFKL TYPE STRING,
RINUM TYPE STRING,
SSKZF TYPE STRING,
RINUMH TYPE STRING,
RERF TYPE STRING,
DAEND TYPE STRING,
TAEND TYPE STRING,
SANLART TYPE STRING,
BARWBAV TYPE STRING,
SAWHR TYPE STRING,
BVWERT TYPE STRING,
SVWHR TYPE STRING,
BARW_VU TYPE STRING,
SAWHR_VU TYPE STRING,
SAART TYPE STRING,
SDV TYPE STRING,
SUABT TYPE STRING,
SMWWHR TYPE STRING,
SNW600 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VZBAVV_BCK_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_VZBAVV_BCK_STR-MANDT sy-vline 
WA_VZBAVV_BCK_STR-RANTYP sy-vline 
WA_VZBAVV_BCK_STR-VVKEY sy-vline 
WA_VZBAVV_BCK_STR-DGUEL_AB sy-vline 
WA_VZBAVV_BCK_STR-SUDEC sy-vline 
WA_VZBAVV_BCK_STR-SSKZB sy-vline 
WA_VZBAVV_BCK_STR-SDVNR sy-vline 
WA_VZBAVV_BCK_STR-SUABNDV sy-vline 
WA_VZBAVV_BCK_STR-SOEFFKL sy-vline 
WA_VZBAVV_BCK_STR-RINUM sy-vline 
WA_VZBAVV_BCK_STR-SSKZF sy-vline 
WA_VZBAVV_BCK_STR-RINUMH sy-vline 
WA_VZBAVV_BCK_STR-RERF sy-vline 
WA_VZBAVV_BCK_STR-DAEND sy-vline 
WA_VZBAVV_BCK_STR-TAEND sy-vline 
WA_VZBAVV_BCK_STR-SANLART sy-vline 
WA_VZBAVV_BCK_STR-BARWBAV sy-vline 
WA_VZBAVV_BCK_STR-SAWHR sy-vline 
WA_VZBAVV_BCK_STR-BVWERT sy-vline 
WA_VZBAVV_BCK_STR-SVWHR sy-vline 
WA_VZBAVV_BCK_STR-BARW_VU sy-vline 
WA_VZBAVV_BCK_STR-SAWHR_VU sy-vline 
WA_VZBAVV_BCK_STR-SAART sy-vline 
WA_VZBAVV_BCK_STR-SDV sy-vline 
WA_VZBAVV_BCK_STR-SUABT sy-vline 
WA_VZBAVV_BCK_STR-SMWWHR sy-vline 
WA_VZBAVV_BCK_STR-SNW600 sy-vline      INTO ld_text SEPARATED BY SPACE.

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