ABAP Select data from SAP table VDBLSWT 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 VDBLSWT 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 VDBLSWT. 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 VDBLSWT 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_VDBLSWT TYPE STANDARD TABLE OF VDBLSWT,
      WA_VDBLSWT TYPE VDBLSWT,
      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: <VDBLSWT> TYPE VDBLSWT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VDBLSWT
*  INTO TABLE @DATA(IT_VDBLSWT2).
*--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_VDBLSWT INDEX 1 INTO DATA(WA_VDBLSWT2).


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

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

ENDLOOP.

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

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


*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_VDBLSWT-SUFLAE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VDBLSWT-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_VDBLSWT_STR, 
MANDT TYPE STRING,
RBLNR 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,
FAUSSEN TYPE STRING,
SUFLAE TYPE STRING,
AGARAGE TYPE STRING,
BGEH TYPE STRING,
ASTELL TYPE STRING,
BSTEH TYPE STRING,
BZWG TYPE STRING,
BZWST TYPE STRING,
BZWAUSS TYPE STRING,
SBESNACH TYPE STRING,
SZUSTAND TYPE STRING,
PSWIND TYPE STRING,
PSIAB TYPE STRING,
BSIAB TYPE STRING,
BAUEH TYPE STRING,
PABZERB TYPE STRING,
BSAOSI TYPE STRING,
SBELWHR TYPE STRING,
BSZWGT TYPE STRING,
BSNEUGT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VDBLSWT_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_VDBLSWT_STR-MANDT sy-vline 
WA_VDBLSWT_STR-RBLNR sy-vline 
WA_VDBLSWT_STR-RERF sy-vline 
WA_VDBLSWT_STR-DERF sy-vline 
WA_VDBLSWT_STR-TERF sy-vline 
WA_VDBLSWT_STR-REHER sy-vline 
WA_VDBLSWT_STR-RBEAR sy-vline 
WA_VDBLSWT_STR-DBEAR sy-vline 
WA_VDBLSWT_STR-TBEAR sy-vline 
WA_VDBLSWT_STR-RBHER sy-vline 
WA_VDBLSWT_STR-FAUSSEN sy-vline 
WA_VDBLSWT_STR-SUFLAE sy-vline 
WA_VDBLSWT_STR-AGARAGE sy-vline 
WA_VDBLSWT_STR-BGEH sy-vline 
WA_VDBLSWT_STR-ASTELL sy-vline 
WA_VDBLSWT_STR-BSTEH sy-vline 
WA_VDBLSWT_STR-BZWG sy-vline 
WA_VDBLSWT_STR-BZWST sy-vline 
WA_VDBLSWT_STR-BZWAUSS sy-vline 
WA_VDBLSWT_STR-SBESNACH sy-vline 
WA_VDBLSWT_STR-SZUSTAND sy-vline 
WA_VDBLSWT_STR-PSWIND sy-vline 
WA_VDBLSWT_STR-PSIAB sy-vline 
WA_VDBLSWT_STR-BSIAB sy-vline 
WA_VDBLSWT_STR-BAUEH sy-vline 
WA_VDBLSWT_STR-PABZERB sy-vline 
WA_VDBLSWT_STR-BSAOSI sy-vline 
WA_VDBLSWT_STR-SBELWHR sy-vline 
WA_VDBLSWT_STR-BSZWGT sy-vline 
WA_VDBLSWT_STR-BSNEUGT sy-vline      INTO ld_text SEPARATED BY SPACE.

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