ABAP Select data from SAP table P2AR_ARTER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2AR_ARTER 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 P2AR_ARTER. 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 P2AR_ARTER 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_P2AR_ARTER TYPE STANDARD TABLE OF P2AR_ARTER,
      WA_P2AR_ARTER TYPE P2AR_ARTER,
      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: <P2AR_ARTER> TYPE P2AR_ARTER.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2AR_ARTER.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2AR_ARTER
  INTO TABLE IT_P2AR_ARTER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2AR_ARTER
*  INTO TABLE @DATA(IT_P2AR_ARTER2).
*--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_P2AR_ARTER INDEX 1 INTO DATA(WA_P2AR_ARTER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2AR_ARTER ASSIGNING <P2AR_ARTER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2AR_ARTER>-MANDT = 1.
<P2AR_ARTER>-DCT_PERNR = 1.
<P2AR_ARTER>-DCT_SEQNR = 1.
<P2AR_ARTER>-DCT_ROWID = 1.
<P2AR_ARTER>-TIPTE = 1.

ENDLOOP.

LOOP AT IT_P2AR_ARTER INTO WA_P2AR_ARTER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2AR_ARTER-PREAV, sy-vline,
  WA_P2AR_ARTER-ANOSE, sy-vline,
  WA_P2AR_ARTER-MESSE, sy-vline,
  WA_P2AR_ARTER-DIASE, sy-vline,
  WA_P2AR_ARTER-TEGRP, sy-vline,
  WA_P2AR_ARTER-EGGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2AR_ARTER 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_P2AR_ARTER 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_P2AR_ARTER INTO WA_P2AR_ARTER.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_P2AR_ARTER_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
TIPTE TYPE STRING,
PREAV TYPE STRING,
ANOSE TYPE STRING,
MESSE TYPE STRING,
DIASE TYPE STRING,
TEGRP TYPE STRING,
EGGRP TYPE STRING,
WAERS TYPE STRING,
COI01 TYPE STRING,
AMT01 TYPE STRING,
PCT01 TYPE STRING,
COI02 TYPE STRING,
AMT02 TYPE STRING,
PCT02 TYPE STRING,
COI03 TYPE STRING,
AMT03 TYPE STRING,
PCT03 TYPE STRING,
COI04 TYPE STRING,
AMT04 TYPE STRING,
PCT04 TYPE STRING,
COI05 TYPE STRING,
AMT05 TYPE STRING,
PCT05 TYPE STRING,
COI06 TYPE STRING,
AMT06 TYPE STRING,
PCT06 TYPE STRING,
COI07 TYPE STRING,
AMT07 TYPE STRING,
PCT07 TYPE STRING,
COI08 TYPE STRING,
AMT08 TYPE STRING,
PCT08 TYPE STRING,
COI09 TYPE STRING,
AMT09 TYPE STRING,
PCT09 TYPE STRING,
COI10 TYPE STRING,
AMT10 TYPE STRING,
PCT10 TYPE STRING,
COI11 TYPE STRING,
AMT11 TYPE STRING,
PCT11 TYPE STRING,
COI12 TYPE STRING,
AMT12 TYPE STRING,
PCT12 TYPE STRING,
COI13 TYPE STRING,
AMT13 TYPE STRING,
PCT13 TYPE STRING,
COI14 TYPE STRING,
AMT14 TYPE STRING,
PCT14 TYPE STRING,
COI15 TYPE STRING,
AMT15 TYPE STRING,
PCT15 TYPE STRING,
COI16 TYPE STRING,
AMT16 TYPE STRING,
PCT16 TYPE STRING,
COI17 TYPE STRING,
AMT17 TYPE STRING,
PCT17 TYPE STRING,
COI18 TYPE STRING,
AMT18 TYPE STRING,
PCT18 TYPE STRING,
COI19 TYPE STRING,
AMT19 TYPE STRING,
PCT19 TYPE STRING,
COI20 TYPE STRING,
AMT20 TYPE STRING,
PCT20 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2AR_ARTER_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_P2AR_ARTER_STR-MANDT sy-vline 
WA_P2AR_ARTER_STR-DCT_PERNR sy-vline 
WA_P2AR_ARTER_STR-DCT_SEQNR sy-vline 
WA_P2AR_ARTER_STR-DCT_ROWID sy-vline 
WA_P2AR_ARTER_STR-TIPTE sy-vline 
WA_P2AR_ARTER_STR-PREAV sy-vline 
WA_P2AR_ARTER_STR-ANOSE sy-vline 
WA_P2AR_ARTER_STR-MESSE sy-vline 
WA_P2AR_ARTER_STR-DIASE sy-vline 
WA_P2AR_ARTER_STR-TEGRP sy-vline 
WA_P2AR_ARTER_STR-EGGRP sy-vline 
WA_P2AR_ARTER_STR-WAERS sy-vline 
WA_P2AR_ARTER_STR-COI01 sy-vline 
WA_P2AR_ARTER_STR-AMT01 sy-vline 
WA_P2AR_ARTER_STR-PCT01 sy-vline 
WA_P2AR_ARTER_STR-COI02 sy-vline 
WA_P2AR_ARTER_STR-AMT02 sy-vline 
WA_P2AR_ARTER_STR-PCT02 sy-vline 
WA_P2AR_ARTER_STR-COI03 sy-vline 
WA_P2AR_ARTER_STR-AMT03 sy-vline 
WA_P2AR_ARTER_STR-PCT03 sy-vline 
WA_P2AR_ARTER_STR-COI04 sy-vline 
WA_P2AR_ARTER_STR-AMT04 sy-vline 
WA_P2AR_ARTER_STR-PCT04 sy-vline 
WA_P2AR_ARTER_STR-COI05 sy-vline 
WA_P2AR_ARTER_STR-AMT05 sy-vline 
WA_P2AR_ARTER_STR-PCT05 sy-vline 
WA_P2AR_ARTER_STR-COI06 sy-vline 
WA_P2AR_ARTER_STR-AMT06 sy-vline 
WA_P2AR_ARTER_STR-PCT06 sy-vline 
WA_P2AR_ARTER_STR-COI07 sy-vline 
WA_P2AR_ARTER_STR-AMT07 sy-vline 
WA_P2AR_ARTER_STR-PCT07 sy-vline 
WA_P2AR_ARTER_STR-COI08 sy-vline 
WA_P2AR_ARTER_STR-AMT08 sy-vline 
WA_P2AR_ARTER_STR-PCT08 sy-vline 
WA_P2AR_ARTER_STR-COI09 sy-vline 
WA_P2AR_ARTER_STR-AMT09 sy-vline 
WA_P2AR_ARTER_STR-PCT09 sy-vline 
WA_P2AR_ARTER_STR-COI10 sy-vline 
WA_P2AR_ARTER_STR-AMT10 sy-vline 
WA_P2AR_ARTER_STR-PCT10 sy-vline 
WA_P2AR_ARTER_STR-COI11 sy-vline 
WA_P2AR_ARTER_STR-AMT11 sy-vline 
WA_P2AR_ARTER_STR-PCT11 sy-vline 
WA_P2AR_ARTER_STR-COI12 sy-vline 
WA_P2AR_ARTER_STR-AMT12 sy-vline 
WA_P2AR_ARTER_STR-PCT12 sy-vline 
WA_P2AR_ARTER_STR-COI13 sy-vline 
WA_P2AR_ARTER_STR-AMT13 sy-vline 
WA_P2AR_ARTER_STR-PCT13 sy-vline 
WA_P2AR_ARTER_STR-COI14 sy-vline 
WA_P2AR_ARTER_STR-AMT14 sy-vline 
WA_P2AR_ARTER_STR-PCT14 sy-vline 
WA_P2AR_ARTER_STR-COI15 sy-vline 
WA_P2AR_ARTER_STR-AMT15 sy-vline 
WA_P2AR_ARTER_STR-PCT15 sy-vline 
WA_P2AR_ARTER_STR-COI16 sy-vline 
WA_P2AR_ARTER_STR-AMT16 sy-vline 
WA_P2AR_ARTER_STR-PCT16 sy-vline 
WA_P2AR_ARTER_STR-COI17 sy-vline 
WA_P2AR_ARTER_STR-AMT17 sy-vline 
WA_P2AR_ARTER_STR-PCT17 sy-vline 
WA_P2AR_ARTER_STR-COI18 sy-vline 
WA_P2AR_ARTER_STR-AMT18 sy-vline 
WA_P2AR_ARTER_STR-PCT18 sy-vline 
WA_P2AR_ARTER_STR-COI19 sy-vline 
WA_P2AR_ARTER_STR-AMT19 sy-vline 
WA_P2AR_ARTER_STR-PCT19 sy-vline 
WA_P2AR_ARTER_STR-COI20 sy-vline 
WA_P2AR_ARTER_STR-AMT20 sy-vline 
WA_P2AR_ARTER_STR-PCT20 sy-vline      INTO ld_text SEPARATED BY SPACE.

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