ABAP Select data from SAP table P48_REDI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P48_REDI 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 P48_REDI. 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 P48_REDI 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_P48_REDI TYPE STANDARD TABLE OF P48_REDI,
      WA_P48_REDI TYPE P48_REDI,
      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: <P48_REDI> TYPE P48_REDI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P48_REDI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P48_REDI
  INTO TABLE IT_P48_REDI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P48_REDI
*  INTO TABLE @DATA(IT_P48_REDI2).
*--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_P48_REDI INDEX 1 INTO DATA(WA_P48_REDI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P48_REDI ASSIGNING <P48_REDI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P48_REDI>-EPF = 1.
<P48_REDI>-MCL = 1.
<P48_REDI>-SSSDOC = 1.
<P48_REDI>-PCFILE = 1.
<P48_REDI>-SSSTEST = 1.

ENDLOOP.

LOOP AT IT_P48_REDI INTO WA_P48_REDI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P48_REDI-EMPLC, sy-vline,
  WA_P48_REDI-FILENAME, sy-vline,
  WA_P48_REDI-DIRECTORY, sy-vline,
  WA_P48_REDI-PBR, sy-vline,
  WA_P48_REDI-REFPONO, sy-vline,
  WA_P48_REDI-DWNLD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P48_REDI 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_P48_REDI 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_P48_REDI INTO WA_P48_REDI.


*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_P48_REDI_STR, 
EPF TYPE STRING,
MCL TYPE STRING,
SSSDOC TYPE STRING,
PCFILE TYPE STRING,
SSSTEST TYPE STRING,
EMPLC TYPE STRING,
FILENAME TYPE STRING,
DIRECTORY TYPE STRING,
PBR TYPE STRING,
REFPONO TYPE STRING,
DWNLD TYPE STRING,
ISSUEDATE TYPE STRING,
CUMNO TYPE STRING,
CUMYR TYPE STRING,
QUARTER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P48_REDI_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_P48_REDI_STR-EPF sy-vline 
WA_P48_REDI_STR-MCL sy-vline 
WA_P48_REDI_STR-SSSDOC sy-vline 
WA_P48_REDI_STR-PCFILE sy-vline 
WA_P48_REDI_STR-SSSTEST sy-vline 
WA_P48_REDI_STR-EMPLC sy-vline 
WA_P48_REDI_STR-FILENAME sy-vline 
WA_P48_REDI_STR-DIRECTORY sy-vline 
WA_P48_REDI_STR-PBR sy-vline 
WA_P48_REDI_STR-REFPONO sy-vline 
WA_P48_REDI_STR-DWNLD sy-vline 
WA_P48_REDI_STR-ISSUEDATE sy-vline 
WA_P48_REDI_STR-CUMNO sy-vline 
WA_P48_REDI_STR-CUMYR sy-vline 
WA_P48_REDI_STR-QUARTER sy-vline      INTO ld_text SEPARATED BY SPACE.

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