ABAP Select data from SAP table VN2DTDTA into internal table

Get Example source ABAP code based on a different SAP table
  

Below is a number of ABAP code snippets to demonstrate how to select data from SAP VN2DTDTA 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 VN2DTDTA. 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 VN2DTDTA 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_VN2DTDTA TYPE STANDARD TABLE OF VN2DTDTA,
      WA_VN2DTDTA TYPE VN2DTDTA,
      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: <VN2DTDTA> TYPE VN2DTDTA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VN2DTDTA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VN2DTDTA
  INTO TABLE IT_VN2DTDTA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VN2DTDTA
*  INTO TABLE @DATA(IT_VN2DTDTA2).
*--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_VN2DTDTA INDEX 1 INTO DATA(WA_VN2DTDTA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VN2DTDTA ASSIGNING <VN2DTDTA>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<VN2DTDTA>-MANDT = 1.
<VN2DTDTA>-SPRAS = 1.
<VN2DTDTA>-EINRI = 1.
<VN2DTDTA>-DTID = 1.
<VN2DTDTA>-DTVERS = 1.
ENDLOOP.

LOOP AT IT_VN2DTDTA INTO WA_VN2DTDTA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VN2DTDTA-APPID, sy-vline,
WA_VN2DTDTA-ETID, sy-vline,
WA_VN2DTDTA-PCFEXT, sy-vline,
WA_VN2DTDTA-PCFKT1, sy-vline,
WA_VN2DTDTA-PCUSER, sy-vline,
WA_VN2DTDTA-PCTERM, sy-vline.
ENDLOOP. *Add any further fields from structure WA_VN2DTDTA 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_VN2DTDTA 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_VN2DTDTA INTO WA_VN2DTDTA. *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 ISOLA, internal->external for field SPRAS CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT' EXPORTING input = WA_VN2DTDTA-SPRAS IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_VN2DTDTA-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EINRI CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_VN2DTDTA-EINRI IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_VN2DTDTA-EINRI.
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_VN2DTDTA_STR,
MANDT TYPE STRING,
SPRAS TYPE STRING,
EINRI TYPE STRING,
DTID TYPE STRING,
DTVERS TYPE STRING,
APPID TYPE STRING,
ETID TYPE STRING,
PCFEXT TYPE STRING,
PCFKT1 TYPE STRING,
PCUSER TYPE STRING,
PCTERM TYPE STRING,
PCSTORELOC TYPE STRING,
PCKPROCAT TYPE STRING,
PCFIL1 TYPE STRING,
PCFIL2 TYPE STRING,
PCFIL3 TYPE STRING,
PCFIL4 TYPE STRING,
PCFIL5 TYPE STRING,
PCFIL6 TYPE STRING,
PCFIL7 TYPE STRING,
PCSYM1 TYPE STRING,
PCSYM2 TYPE STRING,
PCSYM3 TYPE STRING,
PCSYM4 TYPE STRING,
PCSYM5 TYPE STRING,
PCSYM6 TYPE STRING,
PCMRK1 TYPE STRING,
PCMRK2 TYPE STRING,
PCMRK3 TYPE STRING,
ERUSR TYPE STRING,
ERDAT TYPE STRING,
UPUSR TYPE STRING,
UPDAT TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR. DATA: WA_VN2DTDTA_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_VN2DTDTA_STR-MANDT sy-vline
WA_VN2DTDTA_STR-SPRAS sy-vline
WA_VN2DTDTA_STR-EINRI sy-vline
WA_VN2DTDTA_STR-DTID sy-vline
WA_VN2DTDTA_STR-DTVERS sy-vline
WA_VN2DTDTA_STR-APPID sy-vline
WA_VN2DTDTA_STR-ETID sy-vline
WA_VN2DTDTA_STR-PCFEXT sy-vline
WA_VN2DTDTA_STR-PCFKT1 sy-vline
WA_VN2DTDTA_STR-PCUSER sy-vline
WA_VN2DTDTA_STR-PCTERM sy-vline
WA_VN2DTDTA_STR-PCSTORELOC sy-vline
WA_VN2DTDTA_STR-PCKPROCAT sy-vline
WA_VN2DTDTA_STR-PCFIL1 sy-vline
WA_VN2DTDTA_STR-PCFIL2 sy-vline
WA_VN2DTDTA_STR-PCFIL3 sy-vline
WA_VN2DTDTA_STR-PCFIL4 sy-vline
WA_VN2DTDTA_STR-PCFIL5 sy-vline
WA_VN2DTDTA_STR-PCFIL6 sy-vline
WA_VN2DTDTA_STR-PCFIL7 sy-vline
WA_VN2DTDTA_STR-PCSYM1 sy-vline
WA_VN2DTDTA_STR-PCSYM2 sy-vline
WA_VN2DTDTA_STR-PCSYM3 sy-vline
WA_VN2DTDTA_STR-PCSYM4 sy-vline
WA_VN2DTDTA_STR-PCSYM5 sy-vline
WA_VN2DTDTA_STR-PCSYM6 sy-vline
WA_VN2DTDTA_STR-PCMRK1 sy-vline
WA_VN2DTDTA_STR-PCMRK2 sy-vline
WA_VN2DTDTA_STR-PCMRK3 sy-vline
WA_VN2DTDTA_STR-ERUSR sy-vline
WA_VN2DTDTA_STR-ERDAT sy-vline
WA_VN2DTDTA_STR-UPUSR sy-vline
WA_VN2DTDTA_STR-UPDAT sy-vline
WA_VN2DTDTA_STR-KZ sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.