ABAP Select data from SAP table VN1NRSPE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VN1NRSPE 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 VN1NRSPE. 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 VN1NRSPE 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_VN1NRSPE TYPE STANDARD TABLE OF VN1NRSPE,
      WA_VN1NRSPE TYPE VN1NRSPE,
      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: <VN1NRSPE> TYPE VN1NRSPE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VN1NRSPE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VN1NRSPE
  INTO TABLE IT_VN1NRSPE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VN1NRSPE
*  INTO TABLE @DATA(IT_VN1NRSPE2).
*--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_VN1NRSPE INDEX 1 INTO DATA(WA_VN1NRSPE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VN1NRSPE ASSIGNING <VN1NRSPE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VN1NRSPE>-MANDT = 1.
<VN1NRSPE>-NRSPEID = 1.
<VN1NRSPE>-NRSPHID = 1.
<VN1NRSPE>-ENTRY_TYPE = 1.
<VN1NRSPE>-PARENT_NRSPEID = 1.

ENDLOOP.

LOOP AT IT_VN1NRSPE INTO WA_VN1NRSPE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VN1NRSPE-SEQNUM, sy-vline,
  WA_VN1NRSPE-SNPHID, sy-vline,
  WA_VN1NRSPE-SNPEID, sy-vline,
  WA_VN1NRSPE-BCHID, sy-vline,
  WA_VN1NRSPE-BCPID, sy-vline,
  WA_VN1NRSPE-CHILD_NRSPEID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VN1NRSPE 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_VN1NRSPE 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_VN1NRSPE INTO WA_VN1NRSPE.


*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 ORGFA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VN1NRSPE-ORGFA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1NRSPE-ORGFA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGPF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VN1NRSPE-ORGPF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1NRSPE-ORGPF.
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_VN1NRSPE_STR, 
MANDT TYPE STRING,
NRSPEID TYPE STRING,
NRSPHID TYPE STRING,
ENTRY_TYPE TYPE STRING,
PARENT_NRSPEID TYPE STRING,
SEQNUM TYPE STRING,
SNPHID TYPE STRING,
SNPEID TYPE STRING,
BCHID TYPE STRING,
BCPID TYPE STRING,
CHILD_NRSPEID TYPE STRING,
NAME TYPE STRING,
EVAL_PERCENTAGE TYPE STRING,
GENCYID TYPE STRING,
ORGFA TYPE STRING,
ORGPF TYPE STRING,
END_DATE TYPE STRING,
END_TIME TYPE STRING,
END_USER TYPE STRING,
END_ABSG TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPTIM TYPE STRING,
UPUSR TYPE STRING,
STOKZ TYPE STRING,
STODAT TYPE STRING,
STOTIM TYPE STRING,
STOUSR TYPE STRING,
STOID TYPE STRING,
TIMESTAMP TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VN1NRSPE_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_VN1NRSPE_STR-MANDT sy-vline 
WA_VN1NRSPE_STR-NRSPEID sy-vline 
WA_VN1NRSPE_STR-NRSPHID sy-vline 
WA_VN1NRSPE_STR-ENTRY_TYPE sy-vline 
WA_VN1NRSPE_STR-PARENT_NRSPEID sy-vline 
WA_VN1NRSPE_STR-SEQNUM sy-vline 
WA_VN1NRSPE_STR-SNPHID sy-vline 
WA_VN1NRSPE_STR-SNPEID sy-vline 
WA_VN1NRSPE_STR-BCHID sy-vline 
WA_VN1NRSPE_STR-BCPID sy-vline 
WA_VN1NRSPE_STR-CHILD_NRSPEID sy-vline 
WA_VN1NRSPE_STR-NAME sy-vline 
WA_VN1NRSPE_STR-EVAL_PERCENTAGE sy-vline 
WA_VN1NRSPE_STR-GENCYID sy-vline 
WA_VN1NRSPE_STR-ORGFA sy-vline 
WA_VN1NRSPE_STR-ORGPF sy-vline 
WA_VN1NRSPE_STR-END_DATE sy-vline 
WA_VN1NRSPE_STR-END_TIME sy-vline 
WA_VN1NRSPE_STR-END_USER sy-vline 
WA_VN1NRSPE_STR-END_ABSG sy-vline 
WA_VN1NRSPE_STR-ERDAT sy-vline 
WA_VN1NRSPE_STR-ERTIM sy-vline 
WA_VN1NRSPE_STR-ERUSR sy-vline 
WA_VN1NRSPE_STR-UPDAT sy-vline 
WA_VN1NRSPE_STR-UPTIM sy-vline 
WA_VN1NRSPE_STR-UPUSR sy-vline 
WA_VN1NRSPE_STR-STOKZ sy-vline 
WA_VN1NRSPE_STR-STODAT sy-vline 
WA_VN1NRSPE_STR-STOTIM sy-vline 
WA_VN1NRSPE_STR-STOUSR sy-vline 
WA_VN1NRSPE_STR-STOID sy-vline 
WA_VN1NRSPE_STR-TIMESTAMP sy-vline 
WA_VN1NRSPE_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.