ABAP Select data from SAP table VSDOKH0001 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VSDOKH0001 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 VSDOKH0001. 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 VSDOKH0001 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_VSDOKH0001 TYPE STANDARD TABLE OF VSDOKH0001,
      WA_VSDOKH0001 TYPE VSDOKH0001,
      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: <VSDOKH0001> TYPE VSDOKH0001.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VSDOKH0001.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VSDOKH0001
  INTO TABLE IT_VSDOKH0001.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VSDOKH0001
*  INTO TABLE @DATA(IT_VSDOKH00012).
*--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_VSDOKH0001 INDEX 1 INTO DATA(WA_VSDOKH00012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VSDOKH0001 ASSIGNING <VSDOKH0001>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VSDOKH0001>-ID = 1.
<VSDOKH0001>-OBJECT = 1.
<VSDOKH0001>-LANGU = 1.
<VSDOKH0001>-TYP = 1.
<VSDOKH0001>-DOKVERSION = 1.

ENDLOOP.

LOOP AT IT_VSDOKH0001 INTO WA_VSDOKH0001.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VSDOKH0001-DOKSTATE, sy-vline,
  WA_VSDOKH0001-DOKFORM, sy-vline,
  WA_VSDOKH0001-DOKSTYLE, sy-vline,
  WA_VSDOKH0001-DOKFUSER, sy-vline,
  WA_VSDOKH0001-DOKFRELES, sy-vline,
  WA_VSDOKH0001-DOKFDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VSDOKH0001 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_VSDOKH0001 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_VSDOKH0001 INTO WA_VSDOKH0001.


*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_VSDOKH0001_STR, 
ID TYPE STRING,
OBJECT TYPE STRING,
LANGU TYPE STRING,
TYP TYPE STRING,
DOKVERSION TYPE STRING,
DOKSTATE TYPE STRING,
DOKFORM TYPE STRING,
DOKSTYLE TYPE STRING,
DOKFUSER TYPE STRING,
DOKFRELES TYPE STRING,
DOKFDATE TYPE STRING,
DOKFTIME TYPE STRING,
DOKLUSER TYPE STRING,
DOKLRELES TYPE STRING,
DOKLDATE TYPE STRING,
DOKLTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VSDOKH0001_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_VSDOKH0001_STR-ID sy-vline 
WA_VSDOKH0001_STR-OBJECT sy-vline 
WA_VSDOKH0001_STR-LANGU sy-vline 
WA_VSDOKH0001_STR-TYP sy-vline 
WA_VSDOKH0001_STR-DOKVERSION sy-vline 
WA_VSDOKH0001_STR-DOKSTATE sy-vline 
WA_VSDOKH0001_STR-DOKFORM sy-vline 
WA_VSDOKH0001_STR-DOKSTYLE sy-vline 
WA_VSDOKH0001_STR-DOKFUSER sy-vline 
WA_VSDOKH0001_STR-DOKFRELES sy-vline 
WA_VSDOKH0001_STR-DOKFDATE sy-vline 
WA_VSDOKH0001_STR-DOKFTIME sy-vline 
WA_VSDOKH0001_STR-DOKLUSER sy-vline 
WA_VSDOKH0001_STR-DOKLRELES sy-vline 
WA_VSDOKH0001_STR-DOKLDATE sy-vline 
WA_VSDOKH0001_STR-DOKLTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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