ABAP Select data from SAP table VIAKHO13 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VIAKHO13 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 VIAKHO13. 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 VIAKHO13 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_VIAKHO13 TYPE STANDARD TABLE OF VIAKHO13,
      WA_VIAKHO13 TYPE VIAKHO13,
      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: <VIAKHO13> TYPE VIAKHO13.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VIAKHO13.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VIAKHO13
  INTO TABLE IT_VIAKHO13.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIAKHO13
*  INTO TABLE @DATA(IT_VIAKHO132).
*--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_VIAKHO13 INDEX 1 INTO DATA(WA_VIAKHO132).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VIAKHO13 ASSIGNING <VIAKHO13>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIAKHO13>-MANDT = 1.
<VIAKHO13>-BUKRS = 1.
<VIAKHO13>-AESWENR = 1.
<VIAKHO13>-AESNKSL = 1.
<VIAKHO13>-AESEMPSL = 1.

ENDLOOP.

LOOP AT IT_VIAKHO13 INTO WA_VIAKHO13.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIAKHO13-DVONPER, sy-vline,
  WA_VIAKHO13-DBISPER, sy-vline,
  WA_VIAKHO13-NPERSOND, sy-vline,
  WA_VIAKHO13-HOVERSN, sy-vline,
  WA_VIAKHO13-TABIX, sy-vline,
  WA_VIAKHO13-SWENR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIAKHO13 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_VIAKHO13 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_VIAKHO13 INTO WA_VIAKHO13.


*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 AESWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_VIAKHO13-AESWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIAKHO13-AESWENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AESNKSL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIAKHO13-AESNKSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIAKHO13-AESNKSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AESEMPSL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIAKHO13-AESEMPSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIAKHO13-AESEMPSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SWENR, internal->external for field SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_VIAKHO13-SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIAKHO13-SWENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SMENR, internal->external for field SMENR
CALL FUNCTION 'CONVERSION_EXIT_SMENR_OUTPUT'
  EXPORTING
    input =                      WA_VIAKHO13-SMENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIAKHO13-SMENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SMIVE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIAKHO13-SMIVE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIAKHO13-SMIVE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SMIVERMS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIAKHO13-SMIVERMS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIAKHO13-SMIVERMS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ABWKUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIAKHO13-ABWKUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIAKHO13-ABWKUNNR.
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_VIAKHO13_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
AESWENR TYPE STRING,
AESNKSL TYPE STRING,
AESEMPSL TYPE STRING,
DVONPER TYPE STRING,
DBISPER TYPE STRING,
NPERSOND TYPE STRING,
HOVERSN TYPE STRING,
TABIX TYPE STRING,
SWENR TYPE STRING,
SMENR TYPE STRING,
SMIVE TYPE STRING,
SNKS TYPE STRING,
MVSNKS TYPE STRING,
DTDAB TYPE STRING,
DTDBIS TYPE STRING,
ATAGE TYPE STRING,
BUMLGR TYPE STRING,
PMIETER TYPE STRING,
BEZGR TYPE STRING,
SKOART TYPE STRING,
ABREART TYPE STRING,
JVZEIG TYPE STRING,
JMWST TYPE STRING,
MWSKZ TYPE STRING,
BNETTO TYPE STRING,
BSTEUER TYPE STRING,
TWAER TYPE STRING,
DABRECH TYPE STRING,
JVSTOPT TYPE STRING,
SNKSRMS TYPE STRING,
SMIVERMS TYPE STRING,
ABWKUNNR TYPE STRING,
SBEWART TYPE STRING,
SABRG TYPE STRING,
HEIZPROZ TYPE STRING,
SBELEGNG TYPE STRING,
BELEGNGRMS TYPE STRING,
VVABBLN TYPE STRING,
XEINHEIT TYPE STRING,
TXJCD TYPE STRING,
UEBERAE TYPE STRING,
JNOTAXCORR TYPE STRING,
JDIRECT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIAKHO13_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_VIAKHO13_STR-MANDT sy-vline 
WA_VIAKHO13_STR-BUKRS sy-vline 
WA_VIAKHO13_STR-AESWENR sy-vline 
WA_VIAKHO13_STR-AESNKSL sy-vline 
WA_VIAKHO13_STR-AESEMPSL sy-vline 
WA_VIAKHO13_STR-DVONPER sy-vline 
WA_VIAKHO13_STR-DBISPER sy-vline 
WA_VIAKHO13_STR-NPERSOND sy-vline 
WA_VIAKHO13_STR-HOVERSN sy-vline 
WA_VIAKHO13_STR-TABIX sy-vline 
WA_VIAKHO13_STR-SWENR sy-vline 
WA_VIAKHO13_STR-SMENR sy-vline 
WA_VIAKHO13_STR-SMIVE sy-vline 
WA_VIAKHO13_STR-SNKS sy-vline 
WA_VIAKHO13_STR-MVSNKS sy-vline 
WA_VIAKHO13_STR-DTDAB sy-vline 
WA_VIAKHO13_STR-DTDBIS sy-vline 
WA_VIAKHO13_STR-ATAGE sy-vline 
WA_VIAKHO13_STR-BUMLGR sy-vline 
WA_VIAKHO13_STR-PMIETER sy-vline 
WA_VIAKHO13_STR-BEZGR sy-vline 
WA_VIAKHO13_STR-SKOART sy-vline 
WA_VIAKHO13_STR-ABREART sy-vline 
WA_VIAKHO13_STR-JVZEIG sy-vline 
WA_VIAKHO13_STR-JMWST sy-vline 
WA_VIAKHO13_STR-MWSKZ sy-vline 
WA_VIAKHO13_STR-BNETTO sy-vline 
WA_VIAKHO13_STR-BSTEUER sy-vline 
WA_VIAKHO13_STR-TWAER sy-vline 
WA_VIAKHO13_STR-DABRECH sy-vline 
WA_VIAKHO13_STR-JVSTOPT sy-vline 
WA_VIAKHO13_STR-SNKSRMS sy-vline 
WA_VIAKHO13_STR-SMIVERMS sy-vline 
WA_VIAKHO13_STR-ABWKUNNR sy-vline 
WA_VIAKHO13_STR-SBEWART sy-vline 
WA_VIAKHO13_STR-SABRG sy-vline 
WA_VIAKHO13_STR-HEIZPROZ sy-vline 
WA_VIAKHO13_STR-SBELEGNG sy-vline 
WA_VIAKHO13_STR-BELEGNGRMS sy-vline 
WA_VIAKHO13_STR-VVABBLN sy-vline 
WA_VIAKHO13_STR-XEINHEIT sy-vline 
WA_VIAKHO13_STR-TXJCD sy-vline 
WA_VIAKHO13_STR-UEBERAE sy-vline 
WA_VIAKHO13_STR-JNOTAXCORR sy-vline 
WA_VIAKHO13_STR-JDIRECT sy-vline      INTO ld_text SEPARATED BY SPACE.

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