ABAP Select data from SAP table P0002_ABA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0002_ABA 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 P0002_ABA. 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 P0002_ABA 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_P0002_ABA TYPE STANDARD TABLE OF P0002_ABA,
      WA_P0002_ABA TYPE P0002_ABA,
      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: <P0002_ABA> TYPE P0002_ABA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0002_ABA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0002_ABA
  INTO TABLE IT_P0002_ABA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0002_ABA
*  INTO TABLE @DATA(IT_P0002_ABA2).
*--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_P0002_ABA INDEX 1 INTO DATA(WA_P0002_ABA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0002_ABA ASSIGNING <P0002_ABA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0002_ABA>-PERNR = 1.
<P0002_ABA>-INFTY = 1.
<P0002_ABA>-SUBTY = 1.
<P0002_ABA>-OBJPS = 1.
<P0002_ABA>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P0002_ABA INTO WA_P0002_ABA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0002_ABA-ENDDA, sy-vline,
  WA_P0002_ABA-BEGDA, sy-vline,
  WA_P0002_ABA-SEQNR, sy-vline,
  WA_P0002_ABA-AEDTM, sy-vline,
  WA_P0002_ABA-UNAME, sy-vline,
  WA_P0002_ABA-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0002_ABA 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_P0002_ABA 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_P0002_ABA INTO WA_P0002_ABA.


*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 PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_P0002_ABA-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P0002_ABA-GBDAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRSL
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_P0002_ABA-SPRSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P0002_ABA-SPRSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GBJHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_P0002_ABA-GBJHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P0002_ABA-GBJHR.
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_P0002_ABA_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,
INITS TYPE STRING,
NACHN TYPE STRING,
NAME2 TYPE STRING,
NACH2 TYPE STRING,
VORNA TYPE STRING,
CNAME TYPE STRING,
TITEL TYPE STRING,
TITL2 TYPE STRING,
NAMZU TYPE STRING,
VORSW TYPE STRING,
VORS2 TYPE STRING,
RUFNM TYPE STRING,
MIDNM TYPE STRING,
KNZNM TYPE STRING,
ANRED TYPE STRING,
GESCH TYPE STRING,
GBDAT TYPE STRING,
GBLND TYPE STRING,
GBDEP TYPE STRING,
GBORT TYPE STRING,
NATIO TYPE STRING,
NATI2 TYPE STRING,
NATI3 TYPE STRING,
SPRSL TYPE STRING,
KONFE TYPE STRING,
FAMST TYPE STRING,
FAMDT TYPE STRING,
ANZKD TYPE STRING,
NACON TYPE STRING,
PERMO TYPE STRING,
PERID TYPE STRING,
GBPAS TYPE STRING,
FNAMK TYPE STRING,
LNAMK TYPE STRING,
FNAMR TYPE STRING,
LNAMR TYPE STRING,
NABIK TYPE STRING,
NABIR TYPE STRING,
NICKK TYPE STRING,
NICKR TYPE STRING,
GBJHR TYPE STRING,
GBMON TYPE STRING,
GBTAG TYPE STRING,
NCHMC TYPE STRING,
VNAMC TYPE STRING,
NAMZ2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0002_ABA_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_P0002_ABA_STR-PERNR sy-vline 
WA_P0002_ABA_STR-INFTY sy-vline 
WA_P0002_ABA_STR-SUBTY sy-vline 
WA_P0002_ABA_STR-OBJPS sy-vline 
WA_P0002_ABA_STR-SPRPS sy-vline 
WA_P0002_ABA_STR-ENDDA sy-vline 
WA_P0002_ABA_STR-BEGDA sy-vline 
WA_P0002_ABA_STR-SEQNR sy-vline 
WA_P0002_ABA_STR-AEDTM sy-vline 
WA_P0002_ABA_STR-UNAME sy-vline 
WA_P0002_ABA_STR-HISTO sy-vline 
WA_P0002_ABA_STR-ITXEX sy-vline 
WA_P0002_ABA_STR-REFEX sy-vline 
WA_P0002_ABA_STR-ORDEX sy-vline 
WA_P0002_ABA_STR-ITBLD sy-vline 
WA_P0002_ABA_STR-PREAS sy-vline 
WA_P0002_ABA_STR-FLAG1 sy-vline 
WA_P0002_ABA_STR-FLAG2 sy-vline 
WA_P0002_ABA_STR-FLAG3 sy-vline 
WA_P0002_ABA_STR-FLAG4 sy-vline 
WA_P0002_ABA_STR-RESE1 sy-vline 
WA_P0002_ABA_STR-RESE2 sy-vline 
WA_P0002_ABA_STR-GRPVL sy-vline 
WA_P0002_ABA_STR-INITS sy-vline 
WA_P0002_ABA_STR-NACHN sy-vline 
WA_P0002_ABA_STR-NAME2 sy-vline 
WA_P0002_ABA_STR-NACH2 sy-vline 
WA_P0002_ABA_STR-VORNA sy-vline 
WA_P0002_ABA_STR-CNAME sy-vline 
WA_P0002_ABA_STR-TITEL sy-vline 
WA_P0002_ABA_STR-TITL2 sy-vline 
WA_P0002_ABA_STR-NAMZU sy-vline 
WA_P0002_ABA_STR-VORSW sy-vline 
WA_P0002_ABA_STR-VORS2 sy-vline 
WA_P0002_ABA_STR-RUFNM sy-vline 
WA_P0002_ABA_STR-MIDNM sy-vline 
WA_P0002_ABA_STR-KNZNM sy-vline 
WA_P0002_ABA_STR-ANRED sy-vline 
WA_P0002_ABA_STR-GESCH sy-vline 
WA_P0002_ABA_STR-GBDAT sy-vline 
WA_P0002_ABA_STR-GBLND sy-vline 
WA_P0002_ABA_STR-GBDEP sy-vline 
WA_P0002_ABA_STR-GBORT sy-vline 
WA_P0002_ABA_STR-NATIO sy-vline 
WA_P0002_ABA_STR-NATI2 sy-vline 
WA_P0002_ABA_STR-NATI3 sy-vline 
WA_P0002_ABA_STR-SPRSL sy-vline 
WA_P0002_ABA_STR-KONFE sy-vline 
WA_P0002_ABA_STR-FAMST sy-vline 
WA_P0002_ABA_STR-FAMDT sy-vline 
WA_P0002_ABA_STR-ANZKD sy-vline 
WA_P0002_ABA_STR-NACON sy-vline 
WA_P0002_ABA_STR-PERMO sy-vline 
WA_P0002_ABA_STR-PERID sy-vline 
WA_P0002_ABA_STR-GBPAS sy-vline 
WA_P0002_ABA_STR-FNAMK sy-vline 
WA_P0002_ABA_STR-LNAMK sy-vline 
WA_P0002_ABA_STR-FNAMR sy-vline 
WA_P0002_ABA_STR-LNAMR sy-vline 
WA_P0002_ABA_STR-NABIK sy-vline 
WA_P0002_ABA_STR-NABIR sy-vline 
WA_P0002_ABA_STR-NICKK sy-vline 
WA_P0002_ABA_STR-NICKR sy-vline 
WA_P0002_ABA_STR-GBJHR sy-vline 
WA_P0002_ABA_STR-GBMON sy-vline 
WA_P0002_ABA_STR-GBTAG sy-vline 
WA_P0002_ABA_STR-NCHMC sy-vline 
WA_P0002_ABA_STR-VNAMC sy-vline 
WA_P0002_ABA_STR-NAMZ2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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