ABAP Select data from SAP table V_VIAK26_07 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_VIAK26_07 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 V_VIAK26_07. 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 V_VIAK26_07 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_V_VIAK26_07 TYPE STANDARD TABLE OF V_VIAK26_07,
      WA_V_VIAK26_07 TYPE V_VIAK26_07,
      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: <V_VIAK26_07> TYPE V_VIAK26_07.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_VIAK26_07.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_VIAK26_07
  INTO TABLE IT_V_VIAK26_07.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_VIAK26_07
*  INTO TABLE @DATA(IT_V_VIAK26_072).
*--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_V_VIAK26_07 INDEX 1 INTO DATA(WA_V_VIAK26_072).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_VIAK26_07 ASSIGNING <V_VIAK26_07>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_VIAK26_07>-BUKRS = 1.
<V_VIAK26_07>-SWENR = 1.
<V_VIAK26_07>-SNKSL = 1.
<V_VIAK26_07>-SEMPSL = 1.
<V_VIAK26_07>-DGUELEMP = 1.

ENDLOOP.

LOOP AT IT_V_VIAK26_07 INTO WA_V_VIAK26_07.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_VIAK26_07-SABRG, sy-vline,
  WA_V_VIAK26_07-EQUINUM, sy-vline,
  WA_V_VIAK26_07-XEINHEIT, sy-vline,
  WA_V_VIAK26_07-PROZ, sy-vline,
  WA_V_VIAK26_07-JDISTRIBUTE, sy-vline,
  WA_V_VIAK26_07-DJAMON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_VIAK26_07 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_V_VIAK26_07 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_V_VIAK26_07 INTO WA_V_VIAK26_07.


*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 SWENR, internal->external for field SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_V_VIAK26_07-SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_VIAK26_07-SWENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SNKSL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_VIAK26_07-SNKSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_VIAK26_07-SNKSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEMPSL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_VIAK26_07-SEMPSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_VIAK26_07-SEMPSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field XEINHEIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_VIAK26_07-XEINHEIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_VIAK26_07-XEINHEIT.
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_V_VIAK26_07_STR, 
BUKRS TYPE STRING,
SWENR TYPE STRING,
SNKSL TYPE STRING,
SEMPSL TYPE STRING,
DGUELEMP TYPE STRING,
SABRG TYPE STRING,
EQUINUM TYPE STRING,
XEINHEIT TYPE STRING,
PROZ TYPE STRING,
JDISTRIBUTE TYPE STRING,
DJAMON TYPE STRING,
POPTSATZ TYPE STRING,
BGESWERT TYPE STRING,
BUSTWERT TYPE STRING,
AMEGES TYPE STRING,
AMEUST TYPE STRING,
JKONTKZ TYPE STRING,
JALTD TYPE STRING,
RARTOPT TYPE STRING,
DFIXDT TYPE STRING,
BGESKOND TYPE STRING,
BUSTKOND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_VIAK26_07_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_V_VIAK26_07_STR-BUKRS sy-vline 
WA_V_VIAK26_07_STR-SWENR sy-vline 
WA_V_VIAK26_07_STR-SNKSL sy-vline 
WA_V_VIAK26_07_STR-SEMPSL sy-vline 
WA_V_VIAK26_07_STR-DGUELEMP sy-vline 
WA_V_VIAK26_07_STR-SABRG sy-vline 
WA_V_VIAK26_07_STR-EQUINUM sy-vline 
WA_V_VIAK26_07_STR-XEINHEIT sy-vline 
WA_V_VIAK26_07_STR-PROZ sy-vline 
WA_V_VIAK26_07_STR-JDISTRIBUTE sy-vline 
WA_V_VIAK26_07_STR-DJAMON sy-vline 
WA_V_VIAK26_07_STR-POPTSATZ sy-vline 
WA_V_VIAK26_07_STR-BGESWERT sy-vline 
WA_V_VIAK26_07_STR-BUSTWERT sy-vline 
WA_V_VIAK26_07_STR-AMEGES sy-vline 
WA_V_VIAK26_07_STR-AMEUST sy-vline 
WA_V_VIAK26_07_STR-JKONTKZ sy-vline 
WA_V_VIAK26_07_STR-JALTD sy-vline 
WA_V_VIAK26_07_STR-RARTOPT sy-vline 
WA_V_VIAK26_07_STR-DFIXDT sy-vline 
WA_V_VIAK26_07_STR-BGESKOND sy-vline 
WA_V_VIAK26_07_STR-BUSTKOND sy-vline      INTO ld_text SEPARATED BY SPACE.

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