ABAP Select data from SAP table VN1TPM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VN1TPM 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 VN1TPM. 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 VN1TPM 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_VN1TPM TYPE STANDARD TABLE OF VN1TPM,
      WA_VN1TPM TYPE VN1TPM,
      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: <VN1TPM> TYPE VN1TPM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VN1TPM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VN1TPM
  INTO TABLE IT_VN1TPM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VN1TPM
*  INTO TABLE @DATA(IT_VN1TPM2).
*--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_VN1TPM INDEX 1 INTO DATA(WA_VN1TPM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VN1TPM ASSIGNING <VN1TPM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VN1TPM>-MANDT = 1.
<VN1TPM>-EINRI = 1.
<VN1TPM>-TARIF = 1.
<VN1TPM>-TALST = 1.
<VN1TPM>-APRI = 1.

ENDLOOP.

LOOP AT IT_VN1TPM INTO WA_VN1TPM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VN1TPM-DAUER, sy-vline,
  WA_VN1TPM-IFG, sy-vline,
  WA_VN1TPM-ANERF, sy-vline,
  WA_VN1TPM-PATEIN, sy-vline,
  WA_VN1TPM-PATNUE, sy-vline,
  WA_VN1TPM-LIDI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VN1TPM 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_VN1TPM 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_VN1TPM INTO WA_VN1TPM.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VN1TPM-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1TPM-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TARIF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VN1TPM-TARIF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1TPM-TARIF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TALST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VN1TPM-TALST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1TPM-TALST.
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_VN1TPM_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
TARIF TYPE STRING,
TALST TYPE STRING,
APRI TYPE STRING,
DAUER TYPE STRING,
IFG TYPE STRING,
ANERF TYPE STRING,
PATEIN TYPE STRING,
PATNUE TYPE STRING,
LIDI TYPE STRING,
VORBZEIT TYPE STRING,
NACHBZEIT TYPE STRING,
WLTYP TYPE STRING,
AZVKG TYPE STRING,
APCH TYPE STRING,
KM TYPE STRING,
SM TYPE STRING,
MI TYPE STRING,
LOK TYPE STRING,
TDRAD TYPE STRING,
MTRAD TYPE STRING,
ORGAN TYPE STRING,
BILD TYPE STRING,
WLRELEVANT TYPE STRING,
REQ_SER TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VN1TPM_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_VN1TPM_STR-MANDT sy-vline 
WA_VN1TPM_STR-EINRI sy-vline 
WA_VN1TPM_STR-TARIF sy-vline 
WA_VN1TPM_STR-TALST sy-vline 
WA_VN1TPM_STR-APRI sy-vline 
WA_VN1TPM_STR-DAUER sy-vline 
WA_VN1TPM_STR-IFG sy-vline 
WA_VN1TPM_STR-ANERF sy-vline 
WA_VN1TPM_STR-PATEIN sy-vline 
WA_VN1TPM_STR-PATNUE sy-vline 
WA_VN1TPM_STR-LIDI sy-vline 
WA_VN1TPM_STR-VORBZEIT sy-vline 
WA_VN1TPM_STR-NACHBZEIT sy-vline 
WA_VN1TPM_STR-WLTYP sy-vline 
WA_VN1TPM_STR-AZVKG sy-vline 
WA_VN1TPM_STR-APCH sy-vline 
WA_VN1TPM_STR-KM sy-vline 
WA_VN1TPM_STR-SM sy-vline 
WA_VN1TPM_STR-MI sy-vline 
WA_VN1TPM_STR-LOK sy-vline 
WA_VN1TPM_STR-TDRAD sy-vline 
WA_VN1TPM_STR-MTRAD sy-vline 
WA_VN1TPM_STR-ORGAN sy-vline 
WA_VN1TPM_STR-BILD sy-vline 
WA_VN1TPM_STR-WLRELEVANT sy-vline 
WA_VN1TPM_STR-REQ_SER sy-vline 
WA_VN1TPM_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.