ABAP Select data from SAP table P08_MR3_05 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P08_MR3_05 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 P08_MR3_05. 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 P08_MR3_05 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_P08_MR3_05 TYPE STANDARD TABLE OF P08_MR3_05,
      WA_P08_MR3_05 TYPE P08_MR3_05,
      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: <P08_MR3_05> TYPE P08_MR3_05.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P08_MR3_05.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P08_MR3_05
  INTO TABLE IT_P08_MR3_05.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P08_MR3_05
*  INTO TABLE @DATA(IT_P08_MR3_052).
*--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_P08_MR3_05 INDEX 1 INTO DATA(WA_P08_MR3_052).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P08_MR3_05 ASSIGNING <P08_MR3_05>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P08_MR3_05>-ID3 = 1.
<P08_MR3_05>-TONIC = 1.
<P08_MR3_05>-NIREF = 1.
<P08_MR3_05>-TOTAX = 1.
<P08_MR3_05>-TREFI = 1.

ENDLOOP.

LOOP AT IT_P08_MR3_05 INTO WA_P08_MR3_05.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P08_MR3_05-RECNO, sy-vline,
  WA_P08_MR3_05-RCSSP, sy-vline,
  WA_P08_MR3_05-RCSMP, sy-vline,
  WA_P08_MR3_05-NCSMP, sy-vline,
  WA_P08_MR3_05-RCSPP, sy-vline,
  WA_P08_MR3_05-NCSPP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P08_MR3_05 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_P08_MR3_05 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_P08_MR3_05 INTO WA_P08_MR3_05.


*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_P08_MR3_05_STR, 
ID3 TYPE STRING,
TONIC TYPE STRING,
NIREF TYPE STRING,
TOTAX TYPE STRING,
TREFI TYPE STRING,
RECNO TYPE STRING,
RCSSP TYPE STRING,
RCSMP TYPE STRING,
NCSMP TYPE STRING,
RCSPP TYPE STRING,
NCSPP TYPE STRING,
RCSAP TYPE STRING,
NCSAP TYPE STRING,
NHCLM TYPE STRING,
TSTLO TYPE STRING,
TTCRE TYPE STRING,
SP394 TYPE STRING,
CTRL2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P08_MR3_05_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_P08_MR3_05_STR-ID3 sy-vline 
WA_P08_MR3_05_STR-TONIC sy-vline 
WA_P08_MR3_05_STR-NIREF sy-vline 
WA_P08_MR3_05_STR-TOTAX sy-vline 
WA_P08_MR3_05_STR-TREFI sy-vline 
WA_P08_MR3_05_STR-RECNO sy-vline 
WA_P08_MR3_05_STR-RCSSP sy-vline 
WA_P08_MR3_05_STR-RCSMP sy-vline 
WA_P08_MR3_05_STR-NCSMP sy-vline 
WA_P08_MR3_05_STR-RCSPP sy-vline 
WA_P08_MR3_05_STR-NCSPP sy-vline 
WA_P08_MR3_05_STR-RCSAP sy-vline 
WA_P08_MR3_05_STR-NCSAP sy-vline 
WA_P08_MR3_05_STR-NHCLM sy-vline 
WA_P08_MR3_05_STR-TSTLO sy-vline 
WA_P08_MR3_05_STR-TTCRE sy-vline 
WA_P08_MR3_05_STR-SP394 sy-vline 
WA_P08_MR3_05_STR-CTRL2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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