ABAP Select data from SAP table P3302 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P3302 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 P3302. 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 P3302 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_P3302 TYPE STANDARD TABLE OF P3302,
      WA_P3302 TYPE P3302,
      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: <P3302> TYPE P3302.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P3302.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P3302
  INTO TABLE IT_P3302.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P3302
*  INTO TABLE @DATA(IT_P33022).
*--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_P3302 INDEX 1 INTO DATA(WA_P33022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P3302 ASSIGNING <P3302>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P3302>-PERNR = 1.
<P3302>-INFTY = 1.
<P3302>-SUBTY = 1.
<P3302>-OBJPS = 1.
<P3302>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P3302 INTO WA_P3302.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P3302-ENDDA, sy-vline,
  WA_P3302-BEGDA, sy-vline,
  WA_P3302-SEQNR, sy-vline,
  WA_P3302-AEDTM, sy-vline,
  WA_P3302-UNAME, sy-vline,
  WA_P3302-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P3302 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_P3302 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_P3302 INTO WA_P3302.


*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_P3302_STR, 
PERNR TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
HISTO TYPE STRING,
ITXEX TYPE STRING,
REFEX TYPE STRING,
ORDEX TYPE STRING,
ITBLD TYPE STRING,
PREAS TYPE STRING,
FLAG1 TYPE STRING,
FLAG2 TYPE STRING,
FLAG3 TYPE STRING,
FLAG4 TYPE STRING,
RESE1 TYPE STRING,
RESE2 TYPE STRING,
GRPVL TYPE STRING,
ARFNM TYPE STRING,
ARSNM TYPE STRING,
ARTNM TYPE STRING,
ARLNM TYPE STRING,
KAFNM TYPE STRING,
VORNE TYPE STRING,
NACHE TYPE STRING,
MIDNE TYPE STRING,
NACHM TYPE STRING,
GESC2 TYPE STRING,
BLGRP TYPE STRING,
SPONR TYPE STRING,
SPOSP TYPE STRING,
JOBPV TYPE STRING,
JOBPP TYPE STRING,
JOBRP TYPE STRING,
JOBAC TYPE STRING,
SAVPC TYPE STRING,
SAPPC TYPE STRING,
HOMAP TYPE STRING,
CYETD TYPE STRING,
EPORT TYPE STRING,
FRESI TYPE STRING,
EXCLE TYPE STRING,
ENTRD TYPE STRING,
NOCPH TYPE STRING,
BIRCT TYPE STRING,
ACDDG TYPE STRING,
PROCL TYPE STRING,
SPECL TYPE STRING,
EDUST TYPE STRING,
ENSCR TYPE STRING,
ACMTY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P3302_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_P3302_STR-PERNR sy-vline 
WA_P3302_STR-INFTY sy-vline 
WA_P3302_STR-SUBTY sy-vline 
WA_P3302_STR-OBJPS sy-vline 
WA_P3302_STR-SPRPS sy-vline 
WA_P3302_STR-ENDDA sy-vline 
WA_P3302_STR-BEGDA sy-vline 
WA_P3302_STR-SEQNR sy-vline 
WA_P3302_STR-AEDTM sy-vline 
WA_P3302_STR-UNAME sy-vline 
WA_P3302_STR-HISTO sy-vline 
WA_P3302_STR-ITXEX sy-vline 
WA_P3302_STR-REFEX sy-vline 
WA_P3302_STR-ORDEX sy-vline 
WA_P3302_STR-ITBLD sy-vline 
WA_P3302_STR-PREAS sy-vline 
WA_P3302_STR-FLAG1 sy-vline 
WA_P3302_STR-FLAG2 sy-vline 
WA_P3302_STR-FLAG3 sy-vline 
WA_P3302_STR-FLAG4 sy-vline 
WA_P3302_STR-RESE1 sy-vline 
WA_P3302_STR-RESE2 sy-vline 
WA_P3302_STR-GRPVL sy-vline 
WA_P3302_STR-ARFNM sy-vline 
WA_P3302_STR-ARSNM sy-vline 
WA_P3302_STR-ARTNM sy-vline 
WA_P3302_STR-ARLNM sy-vline 
WA_P3302_STR-KAFNM sy-vline 
WA_P3302_STR-VORNE sy-vline 
WA_P3302_STR-NACHE sy-vline 
WA_P3302_STR-MIDNE sy-vline 
WA_P3302_STR-NACHM sy-vline 
WA_P3302_STR-GESC2 sy-vline 
WA_P3302_STR-BLGRP sy-vline 
WA_P3302_STR-SPONR sy-vline 
WA_P3302_STR-SPOSP sy-vline 
WA_P3302_STR-JOBPV sy-vline 
WA_P3302_STR-JOBPP sy-vline 
WA_P3302_STR-JOBRP sy-vline 
WA_P3302_STR-JOBAC sy-vline 
WA_P3302_STR-SAVPC sy-vline 
WA_P3302_STR-SAPPC sy-vline 
WA_P3302_STR-HOMAP sy-vline 
WA_P3302_STR-CYETD sy-vline 
WA_P3302_STR-EPORT sy-vline 
WA_P3302_STR-FRESI sy-vline 
WA_P3302_STR-EXCLE sy-vline 
WA_P3302_STR-ENTRD sy-vline 
WA_P3302_STR-NOCPH sy-vline 
WA_P3302_STR-BIRCT sy-vline 
WA_P3302_STR-ACDDG sy-vline 
WA_P3302_STR-PROCL sy-vline 
WA_P3302_STR-SPECL sy-vline 
WA_P3302_STR-EDUST sy-vline 
WA_P3302_STR-ENSCR sy-vline 
WA_P3302_STR-ACMTY sy-vline      INTO ld_text SEPARATED BY SPACE.

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