ABAP Select data from SAP table P2RM_MSTAT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2RM_MSTAT 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 P2RM_MSTAT. 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 P2RM_MSTAT 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_P2RM_MSTAT TYPE STANDARD TABLE OF P2RM_MSTAT,
      WA_P2RM_MSTAT TYPE P2RM_MSTAT,
      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: <P2RM_MSTAT> TYPE P2RM_MSTAT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RM_MSTAT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RM_MSTAT
  INTO TABLE IT_P2RM_MSTAT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RM_MSTAT
*  INTO TABLE @DATA(IT_P2RM_MSTAT2).
*--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_P2RM_MSTAT INDEX 1 INTO DATA(WA_P2RM_MSTAT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RM_MSTAT ASSIGNING <P2RM_MSTAT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RM_MSTAT>-MANDT = 1.
<P2RM_MSTAT>-DCT_PERNR = 1.
<P2RM_MSTAT>-DCT_SEQNR = 1.
<P2RM_MSTAT>-DCT_ROWID = 1.
<P2RM_MSTAT>-BEGDA = 1.

ENDLOOP.

LOOP AT IT_P2RM_MSTAT INTO WA_P2RM_MSTAT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RM_MSTAT-ENDDA, sy-vline,
  WA_P2RM_MSTAT-STYPE, sy-vline,
  WA_P2RM_MSTAT-STYNO, sy-vline,
  WA_P2RM_MSTAT-BOLIG, sy-vline,
  WA_P2RM_MSTAT-KSOM2, sy-vline,
  WA_P2RM_MSTAT-WCOD1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2RM_MSTAT 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_P2RM_MSTAT 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_P2RM_MSTAT INTO WA_P2RM_MSTAT.


*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_P2RM_MSTAT_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
STYPE TYPE STRING,
STYNO TYPE STRING,
BOLIG TYPE STRING,
KSOM2 TYPE STRING,
WCOD1 TYPE STRING,
WCOD2 TYPE STRING,
WCOD3 TYPE STRING,
BEGW1 TYPE STRING,
BEGW2 TYPE STRING,
BEGW3 TYPE STRING,
ECOD1 TYPE STRING,
ECOD2 TYPE STRING,
ECOD3 TYPE STRING,
ENDD1 TYPE STRING,
ENDD2 TYPE STRING,
ENDD3 TYPE STRING,
KSOM1 TYPE STRING,
DAIN1 TYPE STRING,
DAIN2 TYPE STRING,
DAIN3 TYPE STRING,
DAIN4 TYPE STRING,
DAIN5 TYPE STRING,
DAIN6 TYPE STRING,
DAIN7 TYPE STRING,
DAIN8 TYPE STRING,
DAIN9 TYPE STRING,
ARBS2 TYPE STRING,
ARBS3 TYPE STRING,
WOSTD TYPE STRING,
COL23 TYPE STRING,
COL43 TYPE STRING,
DAFER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2RM_MSTAT_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_P2RM_MSTAT_STR-MANDT sy-vline 
WA_P2RM_MSTAT_STR-DCT_PERNR sy-vline 
WA_P2RM_MSTAT_STR-DCT_SEQNR sy-vline 
WA_P2RM_MSTAT_STR-DCT_ROWID sy-vline 
WA_P2RM_MSTAT_STR-BEGDA sy-vline 
WA_P2RM_MSTAT_STR-ENDDA sy-vline 
WA_P2RM_MSTAT_STR-STYPE sy-vline 
WA_P2RM_MSTAT_STR-STYNO sy-vline 
WA_P2RM_MSTAT_STR-BOLIG sy-vline 
WA_P2RM_MSTAT_STR-KSOM2 sy-vline 
WA_P2RM_MSTAT_STR-WCOD1 sy-vline 
WA_P2RM_MSTAT_STR-WCOD2 sy-vline 
WA_P2RM_MSTAT_STR-WCOD3 sy-vline 
WA_P2RM_MSTAT_STR-BEGW1 sy-vline 
WA_P2RM_MSTAT_STR-BEGW2 sy-vline 
WA_P2RM_MSTAT_STR-BEGW3 sy-vline 
WA_P2RM_MSTAT_STR-ECOD1 sy-vline 
WA_P2RM_MSTAT_STR-ECOD2 sy-vline 
WA_P2RM_MSTAT_STR-ECOD3 sy-vline 
WA_P2RM_MSTAT_STR-ENDD1 sy-vline 
WA_P2RM_MSTAT_STR-ENDD2 sy-vline 
WA_P2RM_MSTAT_STR-ENDD3 sy-vline 
WA_P2RM_MSTAT_STR-KSOM1 sy-vline 
WA_P2RM_MSTAT_STR-DAIN1 sy-vline 
WA_P2RM_MSTAT_STR-DAIN2 sy-vline 
WA_P2RM_MSTAT_STR-DAIN3 sy-vline 
WA_P2RM_MSTAT_STR-DAIN4 sy-vline 
WA_P2RM_MSTAT_STR-DAIN5 sy-vline 
WA_P2RM_MSTAT_STR-DAIN6 sy-vline 
WA_P2RM_MSTAT_STR-DAIN7 sy-vline 
WA_P2RM_MSTAT_STR-DAIN8 sy-vline 
WA_P2RM_MSTAT_STR-DAIN9 sy-vline 
WA_P2RM_MSTAT_STR-ARBS2 sy-vline 
WA_P2RM_MSTAT_STR-ARBS3 sy-vline 
WA_P2RM_MSTAT_STR-WOSTD sy-vline 
WA_P2RM_MSTAT_STR-COL23 sy-vline 
WA_P2RM_MSTAT_STR-COL43 sy-vline 
WA_P2RM_MSTAT_STR-DAFER sy-vline      INTO ld_text SEPARATED BY SPACE.

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