ABAP Select data from SAP table VVDBLREW into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VVDBLREW 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 VVDBLREW. 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 VVDBLREW 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_VVDBLREW TYPE STANDARD TABLE OF VVDBLREW,
      WA_VVDBLREW TYPE VVDBLREW,
      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: <VVDBLREW> TYPE VVDBLREW.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VVDBLREW
*  INTO TABLE @DATA(IT_VVDBLREW2).
*--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_VVDBLREW INDEX 1 INTO DATA(WA_VVDBLREW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VVDBLREW>-MANDT = 1.
<VVDBLREW>-RBLNR = 1.
<VVDBLREW>-NGEBTEIL = 1.
<VVDBLREW>-RERF = 1.
<VVDBLREW>-DERF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VVDBLREW-TERF, sy-vline,
  WA_VVDBLREW-REHER, sy-vline,
  WA_VVDBLREW-RBEAR, sy-vline,
  WA_VVDBLREW-DBEAR, sy-vline,
  WA_VVDBLREW-TBEAR, sy-vline,
  WA_VVDBLREW-RBHER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VVDBLREW 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_VVDBLREW 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_VVDBLREW INTO WA_VVDBLREW.


*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 SUFLAE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VVDBLREW-SUFLAE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVDBLREW-SUFLAE.
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_VVDBLREW_STR, 
MANDT TYPE STRING,
RBLNR TYPE STRING,
NGEBTEIL TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
SGTART TYPE STRING,
SNUTZART TYPE STRING,
XLAGE TYPE STRING,
BMIETE TYPE STRING,
SROHPER TYPE STRING,
BROH TYPE STRING,
FNUTZ TYPE STRING,
SBELWHR TYPE STRING,
SUFLAE TYPE STRING,
JGEW TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VVDBLREW_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_VVDBLREW_STR-MANDT sy-vline 
WA_VVDBLREW_STR-RBLNR sy-vline 
WA_VVDBLREW_STR-NGEBTEIL sy-vline 
WA_VVDBLREW_STR-RERF sy-vline 
WA_VVDBLREW_STR-DERF sy-vline 
WA_VVDBLREW_STR-TERF sy-vline 
WA_VVDBLREW_STR-REHER sy-vline 
WA_VVDBLREW_STR-RBEAR sy-vline 
WA_VVDBLREW_STR-DBEAR sy-vline 
WA_VVDBLREW_STR-TBEAR sy-vline 
WA_VVDBLREW_STR-RBHER sy-vline 
WA_VVDBLREW_STR-SGTART sy-vline 
WA_VVDBLREW_STR-SNUTZART sy-vline 
WA_VVDBLREW_STR-XLAGE sy-vline 
WA_VVDBLREW_STR-BMIETE sy-vline 
WA_VVDBLREW_STR-SROHPER sy-vline 
WA_VVDBLREW_STR-BROH sy-vline 
WA_VVDBLREW_STR-FNUTZ sy-vline 
WA_VVDBLREW_STR-SBELWHR sy-vline 
WA_VVDBLREW_STR-SUFLAE sy-vline 
WA_VVDBLREW_STR-JGEW sy-vline 
WA_VVDBLREW_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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