ABAP Select data from SAP table VIAKHODB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIAKHODB
*  INTO TABLE @DATA(IT_VIAKHODB2).
*--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_VIAKHODB INDEX 1 INTO DATA(WA_VIAKHODB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIAKHODB>-MANDT = 1.
<VIAKHODB>-DBANDID = 1.
<VIAKHODB>-DLFDNR = 1.
<VIAKHODB>-REC_TYP = 1.
<VIAKHODB>-ABRKDNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIAKHODB-ABRORDNR, sy-vline,
  WA_VIAKHODB-ABRBWKZDW, sy-vline,
  WA_VIAKHODB-ABRBWKZB, sy-vline,
  WA_VIAKHODB-ABRBRES4, sy-vline,
  WA_VIAKHODB-ABRZTL, sy-vline,
  WA_VIAKHODB-ABRBBRSTART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIAKHODB 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_VIAKHODB 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_VIAKHODB INTO WA_VIAKHODB.


*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_VIAKHODB_STR, 
MANDT TYPE STRING,
DBANDID TYPE STRING,
DLFDNR TYPE STRING,
REC_TYP TYPE STRING,
ABRKDNR TYPE STRING,
ABRORDNR TYPE STRING,
ABRBWKZDW TYPE STRING,
ABRBWKZB TYPE STRING,
ABRBRES4 TYPE STRING,
ABRZTL TYPE STRING,
ABRBBRSTART TYPE STRING,
ABRBRES3 TYPE STRING,
ABRBBRHZ TYPE STRING,
ABRBDTANF TYPE STRING,
ABRBQUANF TYPE STRING,
ABRBBTANF TYPE STRING,
ABRBBWANF TYPE STRING,
ABRBDTEND TYPE STRING,
ABRBQUEND TYPE STRING,
ABRBBTEND TYPE STRING,
ABRBBWEND TYPE STRING,
ABRBRES6 TYPE STRING,
ABRB1KZBST TYPE STRING,
ABRBSKZ TYPE STRING,
ABRBDT1HZ TYPE STRING,
ABRBDT2HZ TYPE STRING,
ABRBDT1WW TYPE STRING,
ABRBDT2WW TYPE STRING,
ABRBWWTEMP TYPE STRING,
ABRBWWVERB TYPE STRING,
ABRBWWPROZ TYPE STRING,
ABRBUAWPRZ TYPE STRING,
ABRBWWANF TYPE STRING,
ABRBWWEND TYPE STRING,
ABRBKZBRNE TYPE STRING,
ABRBSPERR1 TYPE STRING,
ABRBSPERR22 TYPE STRING,
ABRBKZHWK TYPE STRING,
ABRBRES12 TYPE STRING,
ABRBKZBST TYPE STRING,
ABRB2SKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIAKHODB_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_VIAKHODB_STR-MANDT sy-vline 
WA_VIAKHODB_STR-DBANDID sy-vline 
WA_VIAKHODB_STR-DLFDNR sy-vline 
WA_VIAKHODB_STR-REC_TYP sy-vline 
WA_VIAKHODB_STR-ABRKDNR sy-vline 
WA_VIAKHODB_STR-ABRORDNR sy-vline 
WA_VIAKHODB_STR-ABRBWKZDW sy-vline 
WA_VIAKHODB_STR-ABRBWKZB sy-vline 
WA_VIAKHODB_STR-ABRBRES4 sy-vline 
WA_VIAKHODB_STR-ABRZTL sy-vline 
WA_VIAKHODB_STR-ABRBBRSTART sy-vline 
WA_VIAKHODB_STR-ABRBRES3 sy-vline 
WA_VIAKHODB_STR-ABRBBRHZ sy-vline 
WA_VIAKHODB_STR-ABRBDTANF sy-vline 
WA_VIAKHODB_STR-ABRBQUANF sy-vline 
WA_VIAKHODB_STR-ABRBBTANF sy-vline 
WA_VIAKHODB_STR-ABRBBWANF sy-vline 
WA_VIAKHODB_STR-ABRBDTEND sy-vline 
WA_VIAKHODB_STR-ABRBQUEND sy-vline 
WA_VIAKHODB_STR-ABRBBTEND sy-vline 
WA_VIAKHODB_STR-ABRBBWEND sy-vline 
WA_VIAKHODB_STR-ABRBRES6 sy-vline 
WA_VIAKHODB_STR-ABRB1KZBST sy-vline 
WA_VIAKHODB_STR-ABRBSKZ sy-vline 
WA_VIAKHODB_STR-ABRBDT1HZ sy-vline 
WA_VIAKHODB_STR-ABRBDT2HZ sy-vline 
WA_VIAKHODB_STR-ABRBDT1WW sy-vline 
WA_VIAKHODB_STR-ABRBDT2WW sy-vline 
WA_VIAKHODB_STR-ABRBWWTEMP sy-vline 
WA_VIAKHODB_STR-ABRBWWVERB sy-vline 
WA_VIAKHODB_STR-ABRBWWPROZ sy-vline 
WA_VIAKHODB_STR-ABRBUAWPRZ sy-vline 
WA_VIAKHODB_STR-ABRBWWANF sy-vline 
WA_VIAKHODB_STR-ABRBWWEND sy-vline 
WA_VIAKHODB_STR-ABRBKZBRNE sy-vline 
WA_VIAKHODB_STR-ABRBSPERR1 sy-vline 
WA_VIAKHODB_STR-ABRBSPERR22 sy-vline 
WA_VIAKHODB_STR-ABRBKZHWK sy-vline 
WA_VIAKHODB_STR-ABRBRES12 sy-vline 
WA_VIAKHODB_STR-ABRBKZBST sy-vline 
WA_VIAKHODB_STR-ABRB2SKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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