ABAP Select data from SAP table BDMON_STAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BDMON_STAT
*  INTO TABLE @DATA(IT_BDMON_STAT2).
*--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_BDMON_STAT INDEX 1 INTO DATA(WA_BDMON_STAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BDMON_STAT>-MESTYP = 1.
<BDMON_STAT>-MESCOD = 1.
<BDMON_STAT>-MESFCT = 1.
<BDMON_STAT>-PARPRN = 1.
<BDMON_STAT>-PARPRT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BDMON_STAT-PARPFC, sy-vline,
  WA_BDMON_STAT-TEST, sy-vline,
  WA_BDMON_STAT-STATUS, sy-vline,
  WA_BDMON_STAT-ICOUNT, sy-vline,
  WA_BDMON_STAT-METHOD, sy-vline,
  WA_BDMON_STAT-OFLAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BDMON_STAT 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_BDMON_STAT 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_BDMON_STAT INTO WA_BDMON_STAT.


*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 ALPHA, internal->external for field PARPRN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BDMON_STAT-PARPRN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BDMON_STAT-PARPRN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EDIPV, internal->external for field PARPFC
CALL FUNCTION 'CONVERSION_EXIT_EDIPV_OUTPUT'
  EXPORTING
    input =                      WA_BDMON_STAT-PARPFC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BDMON_STAT-PARPFC.
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_BDMON_STAT_STR, 
MESTYP TYPE STRING,
MESCOD TYPE STRING,
MESFCT TYPE STRING,
PARPRN TYPE STRING,
PARPRT TYPE STRING,
PARPFC TYPE STRING,
TEST TYPE STRING,
STATUS TYPE STRING,
ICOUNT TYPE STRING,
METHOD TYPE STRING,
OFLAG TYPE STRING,
ITYP TYPE STRING,
FILL_BITS TYPE STRING,
INFO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BDMON_STAT_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_BDMON_STAT_STR-MESTYP sy-vline 
WA_BDMON_STAT_STR-MESCOD sy-vline 
WA_BDMON_STAT_STR-MESFCT sy-vline 
WA_BDMON_STAT_STR-PARPRN sy-vline 
WA_BDMON_STAT_STR-PARPRT sy-vline 
WA_BDMON_STAT_STR-PARPFC sy-vline 
WA_BDMON_STAT_STR-TEST sy-vline 
WA_BDMON_STAT_STR-STATUS sy-vline 
WA_BDMON_STAT_STR-ICOUNT sy-vline 
WA_BDMON_STAT_STR-METHOD sy-vline 
WA_BDMON_STAT_STR-OFLAG sy-vline 
WA_BDMON_STAT_STR-ITYP sy-vline 
WA_BDMON_STAT_STR-FILL_BITS sy-vline 
WA_BDMON_STAT_STR-INFO sy-vline      INTO ld_text SEPARATED BY SPACE.

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