ABAP Select data from SAP table P0639 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0639 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 P0639. 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 P0639 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_P0639 TYPE STANDARD TABLE OF P0639,
      WA_P0639 TYPE P0639,
      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: <P0639> TYPE P0639.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0639.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0639
  INTO TABLE IT_P0639.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0639
*  INTO TABLE @DATA(IT_P06392).
*--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_P0639 INDEX 1 INTO DATA(WA_P06392).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0639 ASSIGNING <P0639>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0639>-PERNR = 1.
<P0639>-INFTY = 1.
<P0639>-SUBTY = 1.
<P0639>-OBJPS = 1.
<P0639>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P0639 INTO WA_P0639.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0639-ENDDA, sy-vline,
  WA_P0639-BEGDA, sy-vline,
  WA_P0639-SEQNR, sy-vline,
  WA_P0639-AEDTM, sy-vline,
  WA_P0639-UNAME, sy-vline,
  WA_P0639-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0639 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_P0639 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_P0639 INTO WA_P0639.


*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_P0639_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,
HLAND TYPE STRING,
HLANK TYPE STRING,
HLANM TYPE STRING,
HLANT TYPE STRING,
HATKD TYPE STRING,
HATVD TYPE STRING,
HATKK TYPE STRING,
HATKM TYPE STRING,
HATKT TYPE STRING,
HMODD TYPE STRING,
HMODK TYPE STRING,
HMODM TYPE STRING,
HMODT TYPE STRING,
HATJB TYPE STRING,
HATJE TYPE STRING,
HATJK TYPE STRING,
HATJM TYPE STRING,
HATJT TYPE STRING,
HATAB TYPE STRING,
HATAE TYPE STRING,
HATAK TYPE STRING,
HATAM TYPE STRING,
HATAT TYPE STRING,
VATHD TYPE STRING,
VATHK TYPE STRING,
VATHM TYPE STRING,
VATHT TYPE STRING,
MATHD TYPE STRING,
MATHK TYPE STRING,
MATHM TYPE STRING,
MATHT TYPE STRING,
ADOMK TYPE STRING,
ADOMD TYPE STRING,
ADOMV TYPE STRING,
JKEZJ TYPE STRING,
JKEZV TYPE STRING,
TO_EV_KORR TYPE STRING,
TO_HO_KORR TYPE STRING,
TONAP_KORR TYPE STRING,
JKEZM TYPE STRING,
RANGK TYPE STRING,
RANGD TYPE STRING,
RANGV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0639_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_P0639_STR-PERNR sy-vline 
WA_P0639_STR-INFTY sy-vline 
WA_P0639_STR-SUBTY sy-vline 
WA_P0639_STR-OBJPS sy-vline 
WA_P0639_STR-SPRPS sy-vline 
WA_P0639_STR-ENDDA sy-vline 
WA_P0639_STR-BEGDA sy-vline 
WA_P0639_STR-SEQNR sy-vline 
WA_P0639_STR-AEDTM sy-vline 
WA_P0639_STR-UNAME sy-vline 
WA_P0639_STR-HISTO sy-vline 
WA_P0639_STR-ITXEX sy-vline 
WA_P0639_STR-REFEX sy-vline 
WA_P0639_STR-ORDEX sy-vline 
WA_P0639_STR-ITBLD sy-vline 
WA_P0639_STR-PREAS sy-vline 
WA_P0639_STR-FLAG1 sy-vline 
WA_P0639_STR-FLAG2 sy-vline 
WA_P0639_STR-FLAG3 sy-vline 
WA_P0639_STR-FLAG4 sy-vline 
WA_P0639_STR-RESE1 sy-vline 
WA_P0639_STR-RESE2 sy-vline 
WA_P0639_STR-GRPVL sy-vline 
WA_P0639_STR-HLAND sy-vline 
WA_P0639_STR-HLANK sy-vline 
WA_P0639_STR-HLANM sy-vline 
WA_P0639_STR-HLANT sy-vline 
WA_P0639_STR-HATKD sy-vline 
WA_P0639_STR-HATVD sy-vline 
WA_P0639_STR-HATKK sy-vline 
WA_P0639_STR-HATKM sy-vline 
WA_P0639_STR-HATKT sy-vline 
WA_P0639_STR-HMODD sy-vline 
WA_P0639_STR-HMODK sy-vline 
WA_P0639_STR-HMODM sy-vline 
WA_P0639_STR-HMODT sy-vline 
WA_P0639_STR-HATJB sy-vline 
WA_P0639_STR-HATJE sy-vline 
WA_P0639_STR-HATJK sy-vline 
WA_P0639_STR-HATJM sy-vline 
WA_P0639_STR-HATJT sy-vline 
WA_P0639_STR-HATAB sy-vline 
WA_P0639_STR-HATAE sy-vline 
WA_P0639_STR-HATAK sy-vline 
WA_P0639_STR-HATAM sy-vline 
WA_P0639_STR-HATAT sy-vline 
WA_P0639_STR-VATHD sy-vline 
WA_P0639_STR-VATHK sy-vline 
WA_P0639_STR-VATHM sy-vline 
WA_P0639_STR-VATHT sy-vline 
WA_P0639_STR-MATHD sy-vline 
WA_P0639_STR-MATHK sy-vline 
WA_P0639_STR-MATHM sy-vline 
WA_P0639_STR-MATHT sy-vline 
WA_P0639_STR-ADOMK sy-vline 
WA_P0639_STR-ADOMD sy-vline 
WA_P0639_STR-ADOMV sy-vline 
WA_P0639_STR-JKEZJ sy-vline 
WA_P0639_STR-JKEZV sy-vline 
WA_P0639_STR-TO_EV_KORR sy-vline 
WA_P0639_STR-TO_HO_KORR sy-vline 
WA_P0639_STR-TONAP_KORR sy-vline 
WA_P0639_STR-JKEZM sy-vline 
WA_P0639_STR-RANGK sy-vline 
WA_P0639_STR-RANGD sy-vline 
WA_P0639_STR-RANGV sy-vline      INTO ld_text SEPARATED BY SPACE.

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