ABAP Select data from SAP table VIAR01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VIAR01 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 VIAR01. 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 VIAR01 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_VIAR01 TYPE STANDARD TABLE OF VIAR01,
      WA_VIAR01 TYPE VIAR01,
      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: <VIAR01> TYPE VIAR01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VIAR01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VIAR01
  INTO TABLE IT_VIAR01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIAR01
*  INTO TABLE @DATA(IT_VIAR012).
*--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_VIAR01 INDEX 1 INTO DATA(WA_VIAR012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VIAR01 ASSIGNING <VIAR01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIAR01>-MANDT = 1.
<VIAR01>-SIDGSUPPLY = 1.
<VIAR01>-RERF = 1.
<VIAR01>-DERF = 1.
<VIAR01>-TERF = 1.

ENDLOOP.

LOOP AT IT_VIAR01 INTO WA_VIAR01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIAR01-REHER, sy-vline,
  WA_VIAR01-RBEAR, sy-vline,
  WA_VIAR01-DBEAR, sy-vline,
  WA_VIAR01-TBEAR, sy-vline,
  WA_VIAR01-RBHER, sy-vline,
  WA_VIAR01-JDELETE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIAR01 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_VIAR01 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_VIAR01 INTO WA_VIAR01.


*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 ALPHA, internal->external for field SIDGSUPPLY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIAR01-SIDGSUPPLY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIAR01-SIDGSUPPLY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field AREAKEY
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VIAR01-AREAKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIAR01-AREAKEY.
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_VIAR01_STR, 
MANDT TYPE STRING,
SIDGSUPPLY TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
JDELETE TYPE STRING,
SPARTID TYPE STRING,
SIDLSUPPLY TYPE STRING,
SOBJTYPE TYPE STRING,
JINTERNET TYPE STRING,
XEYECATCH TYPE STRING,
DFREEFROM TYPE STRING,
DFREETILL TYPE STRING,
CURRKEY TYPE STRING,
AREAKEY TYPE STRING,
SAQUISIT TYPE STRING,
PRENTEXCL TYPE STRING,
PRENTINCL TYPE STRING,
PRENTAREAEXCL TYPE STRING,
PRENTAREAINCL TYPE STRING,
PSIZEALL TYPE STRING,
PSIZEUSE TYPE STRING,
NROOMFULL TYPE STRING,
NROOMHALF TYPE STRING,
SFLOORNUM TYPE STRING,
SFLOORMAX TYPE STRING,
SFLOORCOD TYPE STRING,
SLOCALPOS TYPE STRING,
STRAFFROU TYPE STRING,
DBUILDDAT TYPE STRING,
DRSTORDAT TYPE STRING,
CFAFCODE TYPE STRING,
SPARKBAY TYPE STRING,
SPARKBAY2 TYPE STRING,
OCCUPOBLIGO TYPE STRING,
JWBSPREFERRED TYPE STRING,
SCOUNTRY TYPE STRING,
SREGIO TYPE STRING,
SCOUNC TYPE STRING,
SCITYC TYPE STRING,
ZIPCODE TYPE STRING,
LOCATION TYPE STRING,
SUBLOCAT TYPE STRING,
STREET TYPE STRING,
IMGDOCID01 TYPE STRING,
IMGDOCID02 TYPE STRING,
IMGDOCID03 TYPE STRING,
TXTDOCID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIAR01_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_VIAR01_STR-MANDT sy-vline 
WA_VIAR01_STR-SIDGSUPPLY sy-vline 
WA_VIAR01_STR-RERF sy-vline 
WA_VIAR01_STR-DERF sy-vline 
WA_VIAR01_STR-TERF sy-vline 
WA_VIAR01_STR-REHER sy-vline 
WA_VIAR01_STR-RBEAR sy-vline 
WA_VIAR01_STR-DBEAR sy-vline 
WA_VIAR01_STR-TBEAR sy-vline 
WA_VIAR01_STR-RBHER sy-vline 
WA_VIAR01_STR-JDELETE sy-vline 
WA_VIAR01_STR-SPARTID sy-vline 
WA_VIAR01_STR-SIDLSUPPLY sy-vline 
WA_VIAR01_STR-SOBJTYPE sy-vline 
WA_VIAR01_STR-JINTERNET sy-vline 
WA_VIAR01_STR-XEYECATCH sy-vline 
WA_VIAR01_STR-DFREEFROM sy-vline 
WA_VIAR01_STR-DFREETILL sy-vline 
WA_VIAR01_STR-CURRKEY sy-vline 
WA_VIAR01_STR-AREAKEY sy-vline 
WA_VIAR01_STR-SAQUISIT sy-vline 
WA_VIAR01_STR-PRENTEXCL sy-vline 
WA_VIAR01_STR-PRENTINCL sy-vline 
WA_VIAR01_STR-PRENTAREAEXCL sy-vline 
WA_VIAR01_STR-PRENTAREAINCL sy-vline 
WA_VIAR01_STR-PSIZEALL sy-vline 
WA_VIAR01_STR-PSIZEUSE sy-vline 
WA_VIAR01_STR-NROOMFULL sy-vline 
WA_VIAR01_STR-NROOMHALF sy-vline 
WA_VIAR01_STR-SFLOORNUM sy-vline 
WA_VIAR01_STR-SFLOORMAX sy-vline 
WA_VIAR01_STR-SFLOORCOD sy-vline 
WA_VIAR01_STR-SLOCALPOS sy-vline 
WA_VIAR01_STR-STRAFFROU sy-vline 
WA_VIAR01_STR-DBUILDDAT sy-vline 
WA_VIAR01_STR-DRSTORDAT sy-vline 
WA_VIAR01_STR-CFAFCODE sy-vline 
WA_VIAR01_STR-SPARKBAY sy-vline 
WA_VIAR01_STR-SPARKBAY2 sy-vline 
WA_VIAR01_STR-OCCUPOBLIGO sy-vline 
WA_VIAR01_STR-JWBSPREFERRED sy-vline 
WA_VIAR01_STR-SCOUNTRY sy-vline 
WA_VIAR01_STR-SREGIO sy-vline 
WA_VIAR01_STR-SCOUNC sy-vline 
WA_VIAR01_STR-SCITYC sy-vline 
WA_VIAR01_STR-ZIPCODE sy-vline 
WA_VIAR01_STR-LOCATION sy-vline 
WA_VIAR01_STR-SUBLOCAT sy-vline 
WA_VIAR01_STR-STREET sy-vline 
WA_VIAR01_STR-IMGDOCID01 sy-vline 
WA_VIAR01_STR-IMGDOCID02 sy-vline 
WA_VIAR01_STR-IMGDOCID03 sy-vline 
WA_VIAR01_STR-TXTDOCID sy-vline      INTO ld_text SEPARATED BY SPACE.

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