ABAP Select data from SAP table P0029 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0029 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 P0029. 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 P0029 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_P0029 TYPE STANDARD TABLE OF P0029,
      WA_P0029 TYPE P0029,
      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: <P0029> TYPE P0029.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0029.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0029
  INTO TABLE IT_P0029.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0029
*  INTO TABLE @DATA(IT_P00292).
*--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_P0029 INDEX 1 INTO DATA(WA_P00292).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0029 ASSIGNING <P0029>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0029>-PERNR = 1.
<P0029>-INFTY = 1.
<P0029>-SUBTY = 1.
<P0029>-OBJPS = 1.
<P0029>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P0029 INTO WA_P0029.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0029-ENDDA, sy-vline,
  WA_P0029-BEGDA, sy-vline,
  WA_P0029-SEQNR, sy-vline,
  WA_P0029-AEDTM, sy-vline,
  WA_P0029-UNAME, sy-vline,
  WA_P0029-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0029 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_P0029 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_P0029 INTO WA_P0029.


*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_P0029_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,
BRFGN TYPE STRING,
GFTST TYPE STRING,
PROZT TYPE STRING,
ABWUV TYPE STRING,
BRFG2 TYPE STRING,
GFTS2 TYPE STRING,
PROZ2 TYPE STRING,
ABWU2 TYPE STRING,
BRFG3 TYPE STRING,
GFTS3 TYPE STRING,
PROZ3 TYPE STRING,
ABWU3 TYPE STRING,
BRFG4 TYPE STRING,
GFTS4 TYPE STRING,
PROZ4 TYPE STRING,
ABWU4 TYPE STRING,
BRFG5 TYPE STRING,
GFTS5 TYPE STRING,
PROZ5 TYPE STRING,
ABWU5 TYPE STRING,
BRFG6 TYPE STRING,
GFTS6 TYPE STRING,
PROZ6 TYPE STRING,
ABWU6 TYPE STRING,
NBGPF TYPE STRING,
AUSMI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0029_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_P0029_STR-PERNR sy-vline 
WA_P0029_STR-INFTY sy-vline 
WA_P0029_STR-SUBTY sy-vline 
WA_P0029_STR-OBJPS sy-vline 
WA_P0029_STR-SPRPS sy-vline 
WA_P0029_STR-ENDDA sy-vline 
WA_P0029_STR-BEGDA sy-vline 
WA_P0029_STR-SEQNR sy-vline 
WA_P0029_STR-AEDTM sy-vline 
WA_P0029_STR-UNAME sy-vline 
WA_P0029_STR-HISTO sy-vline 
WA_P0029_STR-ITXEX sy-vline 
WA_P0029_STR-REFEX sy-vline 
WA_P0029_STR-ORDEX sy-vline 
WA_P0029_STR-ITBLD sy-vline 
WA_P0029_STR-PREAS sy-vline 
WA_P0029_STR-FLAG1 sy-vline 
WA_P0029_STR-FLAG2 sy-vline 
WA_P0029_STR-FLAG3 sy-vline 
WA_P0029_STR-FLAG4 sy-vline 
WA_P0029_STR-RESE1 sy-vline 
WA_P0029_STR-RESE2 sy-vline 
WA_P0029_STR-GRPVL sy-vline 
WA_P0029_STR-BRFGN sy-vline 
WA_P0029_STR-GFTST sy-vline 
WA_P0029_STR-PROZT sy-vline 
WA_P0029_STR-ABWUV sy-vline 
WA_P0029_STR-BRFG2 sy-vline 
WA_P0029_STR-GFTS2 sy-vline 
WA_P0029_STR-PROZ2 sy-vline 
WA_P0029_STR-ABWU2 sy-vline 
WA_P0029_STR-BRFG3 sy-vline 
WA_P0029_STR-GFTS3 sy-vline 
WA_P0029_STR-PROZ3 sy-vline 
WA_P0029_STR-ABWU3 sy-vline 
WA_P0029_STR-BRFG4 sy-vline 
WA_P0029_STR-GFTS4 sy-vline 
WA_P0029_STR-PROZ4 sy-vline 
WA_P0029_STR-ABWU4 sy-vline 
WA_P0029_STR-BRFG5 sy-vline 
WA_P0029_STR-GFTS5 sy-vline 
WA_P0029_STR-PROZ5 sy-vline 
WA_P0029_STR-ABWU5 sy-vline 
WA_P0029_STR-BRFG6 sy-vline 
WA_P0029_STR-GFTS6 sy-vline 
WA_P0029_STR-PROZ6 sy-vline 
WA_P0029_STR-ABWU6 sy-vline 
WA_P0029_STR-NBGPF sy-vline 
WA_P0029_STR-AUSMI sy-vline      INTO ld_text SEPARATED BY SPACE.

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