ABAP Select data from SAP table P25NS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP P25NS 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 P25NS. 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 P25NS 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_P25NS TYPE STANDARD TABLE OF P25NS,
      WA_P25NS TYPE P25NS,
      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: <P25NS> TYPE P25NS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P25NS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P25NS
  INTO TABLE IT_P25NS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P25NS
*  INTO TABLE @DATA(IT_P25NS2).
*--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_P25NS INDEX 1 INTO DATA(WA_P25NS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P25NS ASSIGNING <P25NS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P25NS>-BUKRS = 1.
<P25NS>-WERKS = 1.
<P25NS>-BTRTL = 1.
<P25NS>-PERSG = 1.
<P25NS>-PERSK = 1.

ENDLOOP.

LOOP AT IT_P25NS INTO WA_P25NS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P25NS-ABKRS, sy-vline,
  WA_P25NS-KOSTL, sy-vline,
  WA_P25NS-ORGEH, sy-vline,
  WA_P25NS-ANSVH, sy-vline,
  WA_P25NS-SCHKZ, sy-vline,
  WA_P25NS-ZTERF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P25NS 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_P25NS 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_P25NS INTO WA_P25NS.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_P25NS-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P25NS-KOSTL.
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_P25NS_STR, 
BUKRS TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
ABKRS TYPE STRING,
KOSTL TYPE STRING,
ORGEH TYPE STRING,
ANSVH TYPE STRING,
SCHKZ TYPE STRING,
ZTERF TYPE STRING,
TEILK TYPE STRING,
EMPCT TYPE STRING,
ARBST TYPE STRING,
WOSTD TYPE STRING,
MOSTD TYPE STRING,
JRSTD TYPE STRING,
WKWDY TYPE STRING,
PERNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P25NS_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_P25NS_STR-BUKRS sy-vline 
WA_P25NS_STR-WERKS sy-vline 
WA_P25NS_STR-BTRTL sy-vline 
WA_P25NS_STR-PERSG sy-vline 
WA_P25NS_STR-PERSK sy-vline 
WA_P25NS_STR-ABKRS sy-vline 
WA_P25NS_STR-KOSTL sy-vline 
WA_P25NS_STR-ORGEH sy-vline 
WA_P25NS_STR-ANSVH sy-vline 
WA_P25NS_STR-SCHKZ sy-vline 
WA_P25NS_STR-ZTERF sy-vline 
WA_P25NS_STR-TEILK sy-vline 
WA_P25NS_STR-EMPCT sy-vline 
WA_P25NS_STR-ARBST sy-vline 
WA_P25NS_STR-WOSTD sy-vline 
WA_P25NS_STR-MOSTD sy-vline 
WA_P25NS_STR-JRSTD sy-vline 
WA_P25NS_STR-WKWDY sy-vline 
WA_P25NS_STR-PERNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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