ABAP Select data from SAP table O2PAGDIRI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP O2PAGDIRI 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 O2PAGDIRI. 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 O2PAGDIRI 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_O2PAGDIRI TYPE STANDARD TABLE OF O2PAGDIRI,
      WA_O2PAGDIRI TYPE O2PAGDIRI,
      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: <O2PAGDIRI> TYPE O2PAGDIRI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_O2PAGDIRI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM O2PAGDIRI
  INTO TABLE IT_O2PAGDIRI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM O2PAGDIRI
*  INTO TABLE @DATA(IT_O2PAGDIRI2).
*--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_O2PAGDIRI INDEX 1 INTO DATA(WA_O2PAGDIRI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_O2PAGDIRI ASSIGNING <O2PAGDIRI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<O2PAGDIRI>-APPLNAME = 1.
<O2PAGDIRI>-PAGEKEY = 1.
<O2PAGDIRI>-PAGENAME = 1.
<O2PAGDIRI>-AUTHOR = 1.
<O2PAGDIRI>-CREATEDON = 1.

ENDLOOP.

LOOP AT IT_O2PAGDIRI INTO WA_O2PAGDIRI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_O2PAGDIRI-CHANGEDBY, sy-vline,
  WA_O2PAGDIRI-CHANGEDON, sy-vline,
  WA_O2PAGDIRI-IMPLCLASS, sy-vline,
  WA_O2PAGDIRI-PAGETYPE, sy-vline,
  WA_O2PAGDIRI-CHANGETIME, sy-vline,
  WA_O2PAGDIRI-CONTROLLERURL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_O2PAGDIRI 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_O2PAGDIRI 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_O2PAGDIRI INTO WA_O2PAGDIRI.


*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 ISOLA, internal->external for field LAYOUTLANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_O2PAGDIRI-LAYOUTLANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_O2PAGDIRI-LAYOUTLANGU.
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_O2PAGDIRI_STR, 
APPLNAME TYPE STRING,
PAGEKEY TYPE STRING,
PAGENAME TYPE STRING,
AUTHOR TYPE STRING,
CREATEDON TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGEDON TYPE STRING,
IMPLCLASS TYPE STRING,
PAGETYPE TYPE STRING,
CHANGETIME TYPE STRING,
CONTROLLERURL TYPE STRING,
MIMETYPE TYPE STRING,
SECUREHTTP TYPE STRING,
LIFETIME TYPE STRING,
STATE TYPE STRING,
BROWSER_CACHE TYPE STRING,
SERVER_CACHE TYPE STRING,
STRIPMODE TYPE STRING,
BROWSER_DEP TYPE STRING,
IS_ERROR_PAGE TYPE STRING,
ERROR_PAGE TYPE STRING,
COMPRESSION TYPE STRING,
IS_START_PAGE TYPE STRING,
LAYOUTLANGU TYPE STRING,
NO_SCRIPT TYPE STRING,
DELTA_HANDLING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_O2PAGDIRI_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_O2PAGDIRI_STR-APPLNAME sy-vline 
WA_O2PAGDIRI_STR-PAGEKEY sy-vline 
WA_O2PAGDIRI_STR-PAGENAME sy-vline 
WA_O2PAGDIRI_STR-AUTHOR sy-vline 
WA_O2PAGDIRI_STR-CREATEDON sy-vline 
WA_O2PAGDIRI_STR-CHANGEDBY sy-vline 
WA_O2PAGDIRI_STR-CHANGEDON sy-vline 
WA_O2PAGDIRI_STR-IMPLCLASS sy-vline 
WA_O2PAGDIRI_STR-PAGETYPE sy-vline 
WA_O2PAGDIRI_STR-CHANGETIME sy-vline 
WA_O2PAGDIRI_STR-CONTROLLERURL sy-vline 
WA_O2PAGDIRI_STR-MIMETYPE sy-vline 
WA_O2PAGDIRI_STR-SECUREHTTP sy-vline 
WA_O2PAGDIRI_STR-LIFETIME sy-vline 
WA_O2PAGDIRI_STR-STATE sy-vline 
WA_O2PAGDIRI_STR-BROWSER_CACHE sy-vline 
WA_O2PAGDIRI_STR-SERVER_CACHE sy-vline 
WA_O2PAGDIRI_STR-STRIPMODE sy-vline 
WA_O2PAGDIRI_STR-BROWSER_DEP sy-vline 
WA_O2PAGDIRI_STR-IS_ERROR_PAGE sy-vline 
WA_O2PAGDIRI_STR-ERROR_PAGE sy-vline 
WA_O2PAGDIRI_STR-COMPRESSION sy-vline 
WA_O2PAGDIRI_STR-IS_START_PAGE sy-vline 
WA_O2PAGDIRI_STR-LAYOUTLANGU sy-vline 
WA_O2PAGDIRI_STR-NO_SCRIPT sy-vline 
WA_O2PAGDIRI_STR-DELTA_HANDLING sy-vline      INTO ld_text SEPARATED BY SPACE.

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