ABAP Select data from SAP table P02_INFOTYPES into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P02_INFOTYPES 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 P02_INFOTYPES. 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 P02_INFOTYPES 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_P02_INFOTYPES TYPE STANDARD TABLE OF P02_INFOTYPES,
      WA_P02_INFOTYPES TYPE P02_INFOTYPES,
      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: <P02_INFOTYPES> TYPE P02_INFOTYPES.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P02_INFOTYPES.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P02_INFOTYPES
  INTO TABLE IT_P02_INFOTYPES.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P02_INFOTYPES
*  INTO TABLE @DATA(IT_P02_INFOTYPES2).
*--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_P02_INFOTYPES INDEX 1 INTO DATA(WA_P02_INFOTYPES2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P02_INFOTYPES ASSIGNING <P02_INFOTYPES>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P02_INFOTYPES>-PERNR = 1.
<P02_INFOTYPES>-P0000 = 1.
<P02_INFOTYPES>-P0001 = 1.
<P02_INFOTYPES>-P0002 = 1.
<P02_INFOTYPES>-P0006 = 1.

ENDLOOP.

LOOP AT IT_P02_INFOTYPES INTO WA_P02_INFOTYPES.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P02_INFOTYPES-P0007, sy-vline,
  WA_P02_INFOTYPES-P0008, sy-vline,
  WA_P02_INFOTYPES-P0021, sy-vline,
  WA_P02_INFOTYPES-P0032, sy-vline,
  WA_P02_INFOTYPES-P0036, sy-vline,
  WA_P02_INFOTYPES-P0038, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P02_INFOTYPES 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_P02_INFOTYPES 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_P02_INFOTYPES INTO WA_P02_INFOTYPES.


*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_P02_INFOTYPES_STR, 
PERNR TYPE STRING,
P0000 TYPE STRING,
P0001 TYPE STRING,
P0002 TYPE STRING,
P0006 TYPE STRING,
P0007 TYPE STRING,
P0008 TYPE STRING,
P0021 TYPE STRING,
P0032 TYPE STRING,
P0036 TYPE STRING,
P0038 TYPE STRING,
P0041 TYPE STRING,
P0048 TYPE STRING,
P0288 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P02_INFOTYPES_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_P02_INFOTYPES_STR-PERNR sy-vline 
WA_P02_INFOTYPES_STR-P0000 sy-vline 
WA_P02_INFOTYPES_STR-P0001 sy-vline 
WA_P02_INFOTYPES_STR-P0002 sy-vline 
WA_P02_INFOTYPES_STR-P0006 sy-vline 
WA_P02_INFOTYPES_STR-P0007 sy-vline 
WA_P02_INFOTYPES_STR-P0008 sy-vline 
WA_P02_INFOTYPES_STR-P0021 sy-vline 
WA_P02_INFOTYPES_STR-P0032 sy-vline 
WA_P02_INFOTYPES_STR-P0036 sy-vline 
WA_P02_INFOTYPES_STR-P0038 sy-vline 
WA_P02_INFOTYPES_STR-P0041 sy-vline 
WA_P02_INFOTYPES_STR-P0048 sy-vline 
WA_P02_INFOTYPES_STR-P0288 sy-vline      INTO ld_text SEPARATED BY SPACE.

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