ABAP Select data from SAP table PM0DY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PM0DY 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 PM0DY. 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 PM0DY 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_PM0DY TYPE STANDARD TABLE OF PM0DY,
      WA_PM0DY TYPE PM0DY,
      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: <PM0DY> TYPE PM0DY.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PM0DY.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PM0DY
  INTO TABLE IT_PM0DY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PM0DY
*  INTO TABLE @DATA(IT_PM0DY2).
*--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_PM0DY INDEX 1 INTO DATA(WA_PM0DY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PM0DY ASSIGNING <PM0DY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PM0DY>-PPOBJID = 1.
<PM0DY>-GREDT1 = 1.
<PM0DY>-HISTO = 1.
<PM0DY>-REFOBJID = 1.
<PM0DY>-RSHORT = 1.

ENDLOOP.

LOOP AT IT_PM0DY INTO WA_PM0DY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PM0DY-SOBJID, sy-vline,
  WA_PM0DY-RSTEXT, sy-vline,
  WA_PM0DY-RELCO, sy-vline,
  WA_PM0DY-STATUS1, sy-vline,
  WA_PM0DY-STATUS2, sy-vline,
  WA_PM0DY-STATUS3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PM0DY 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_PM0DY 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_PM0DY INTO WA_PM0DY.


*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_PM0DY_STR, 
PPOBJID TYPE STRING,
GREDT1 TYPE STRING,
HISTO TYPE STRING,
REFOBJID TYPE STRING,
RSHORT TYPE STRING,
SOBJID TYPE STRING,
RSTEXT TYPE STRING,
RELCO TYPE STRING,
STATUS1 TYPE STRING,
STATUS2 TYPE STRING,
STATUS3 TYPE STRING,
STATUS4 TYPE STRING,
STATUS5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PM0DY_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_PM0DY_STR-PPOBJID sy-vline 
WA_PM0DY_STR-GREDT1 sy-vline 
WA_PM0DY_STR-HISTO sy-vline 
WA_PM0DY_STR-REFOBJID sy-vline 
WA_PM0DY_STR-RSHORT sy-vline 
WA_PM0DY_STR-SOBJID sy-vline 
WA_PM0DY_STR-RSTEXT sy-vline 
WA_PM0DY_STR-RELCO sy-vline 
WA_PM0DY_STR-STATUS1 sy-vline 
WA_PM0DY_STR-STATUS2 sy-vline 
WA_PM0DY_STR-STATUS3 sy-vline 
WA_PM0DY_STR-STATUS4 sy-vline 
WA_PM0DY_STR-STATUS5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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