ABAP Select data from SAP table VXDD270002 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VXDD270002 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 VXDD270002. 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 VXDD270002 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_VXDD270002 TYPE STANDARD TABLE OF VXDD270002,
      WA_VXDD270002 TYPE VXDD270002,
      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: <VXDD270002> TYPE VXDD270002.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VXDD270002.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VXDD270002
  INTO TABLE IT_VXDD270002.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VXDD270002
*  INTO TABLE @DATA(IT_VXDD2700022).
*--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_VXDD270002 INDEX 1 INTO DATA(WA_VXDD2700022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VXDD270002 ASSIGNING <VXDD270002>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VXDD270002>-VRSFLAG = 1.
<VXDD270002>-DDLANGUAGE = 1.
<VXDD270002>-VIEWNAME = 1.
<VXDD270002>-VIEWFIELD = 1.
<VXDD270002>-OBJPOS = 1.

ENDLOOP.

LOOP AT IT_VXDD270002 INTO WA_VXDD270002.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VXDD270002-TABNAME, sy-vline,
  WA_VXDD270002-FIELDNAME, sy-vline,
  WA_VXDD270002-KEYFLAG, sy-vline,
  WA_VXDD270002-MCFIELDID, sy-vline,
  WA_VXDD270002-EFORM, sy-vline,
  WA_VXDD270002-ROLLNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VXDD270002 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_VXDD270002 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_VXDD270002 INTO WA_VXDD270002.


*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_VXDD270002_STR, 
VRSFLAG TYPE STRING,
DDLANGUAGE TYPE STRING,
VIEWNAME TYPE STRING,
VIEWFIELD TYPE STRING,
OBJPOS TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
KEYFLAG TYPE STRING,
MCFIELDID TYPE STRING,
EFORM TYPE STRING,
ROLLNAME TYPE STRING,
ENQMODE TYPE STRING,
RDONLY TYPE STRING,
ROLLCHANGE TYPE STRING,
DBVIEWFIELD TYPE STRING,
EXVDATATYPE TYPE STRING,
EXVFLENGTH TYPE STRING,
EXVDECIMALS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VXDD270002_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_VXDD270002_STR-VRSFLAG sy-vline 
WA_VXDD270002_STR-DDLANGUAGE sy-vline 
WA_VXDD270002_STR-VIEWNAME sy-vline 
WA_VXDD270002_STR-VIEWFIELD sy-vline 
WA_VXDD270002_STR-OBJPOS sy-vline 
WA_VXDD270002_STR-TABNAME sy-vline 
WA_VXDD270002_STR-FIELDNAME sy-vline 
WA_VXDD270002_STR-KEYFLAG sy-vline 
WA_VXDD270002_STR-MCFIELDID sy-vline 
WA_VXDD270002_STR-EFORM sy-vline 
WA_VXDD270002_STR-ROLLNAME sy-vline 
WA_VXDD270002_STR-ENQMODE sy-vline 
WA_VXDD270002_STR-RDONLY sy-vline 
WA_VXDD270002_STR-ROLLCHANGE sy-vline 
WA_VXDD270002_STR-DBVIEWFIELD sy-vline 
WA_VXDD270002_STR-EXVDATATYPE sy-vline 
WA_VXDD270002_STR-EXVFLENGTH sy-vline 
WA_VXDD270002_STR-EXVDECIMALS sy-vline      INTO ld_text SEPARATED BY SPACE.

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