ABAP Select data from SAP table DTABV into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DTABV
*  INTO TABLE @DATA(IT_DTABV2).
*--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_DTABV INDEX 1 INTO DATA(WA_DTABV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DTABV>-V1A = 1.
<DTABV>-V1B = 1.
<DTABV>-V2 = 1.
<DTABV>-V3 = 1.
<DTABV>-V4 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DTABV-V5, sy-vline,
  WA_DTABV-V6, sy-vline,
  WA_DTABV-V7, sy-vline,
  WA_DTABV-V8, sy-vline,
  WA_DTABV-V9, sy-vline,
  WA_DTABV-V10, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DTABV 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_DTABV 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_DTABV INTO WA_DTABV.


*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_DTABV_STR, 
V1A TYPE STRING,
V1B TYPE STRING,
V2 TYPE STRING,
V3 TYPE STRING,
V4 TYPE STRING,
V5 TYPE STRING,
V6 TYPE STRING,
V7 TYPE STRING,
V8 TYPE STRING,
V9 TYPE STRING,
V10 TYPE STRING,
V11 TYPE STRING,
V12 TYPE STRING,
V13 TYPE STRING,
V14 TYPE STRING,
V15 TYPE STRING,
V16 TYPE STRING,
V17 TYPE STRING,
V18 TYPE STRING,
V19 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DTABV_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_DTABV_STR-V1A sy-vline 
WA_DTABV_STR-V1B sy-vline 
WA_DTABV_STR-V2 sy-vline 
WA_DTABV_STR-V3 sy-vline 
WA_DTABV_STR-V4 sy-vline 
WA_DTABV_STR-V5 sy-vline 
WA_DTABV_STR-V6 sy-vline 
WA_DTABV_STR-V7 sy-vline 
WA_DTABV_STR-V8 sy-vline 
WA_DTABV_STR-V9 sy-vline 
WA_DTABV_STR-V10 sy-vline 
WA_DTABV_STR-V11 sy-vline 
WA_DTABV_STR-V12 sy-vline 
WA_DTABV_STR-V13 sy-vline 
WA_DTABV_STR-V14 sy-vline 
WA_DTABV_STR-V15 sy-vline 
WA_DTABV_STR-V16 sy-vline 
WA_DTABV_STR-V17 sy-vline 
WA_DTABV_STR-V18 sy-vline 
WA_DTABV_STR-V19 sy-vline      INTO ld_text SEPARATED BY SPACE.

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