ABAP Select data from SAP table DB6PMDB02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB6PMDB02 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 DB6PMDB02. 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 DB6PMDB02 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_DB6PMDB02 TYPE STANDARD TABLE OF DB6PMDB02,
      WA_DB6PMDB02 TYPE DB6PMDB02,
      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: <DB6PMDB02> TYPE DB6PMDB02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB6PMDB02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB6PMDB02
  INTO TABLE IT_DB6PMDB02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB6PMDB02
*  INTO TABLE @DATA(IT_DB6PMDB022).
*--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_DB6PMDB02 INDEX 1 INTO DATA(WA_DB6PMDB022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB6PMDB02 ASSIGNING <DB6PMDB02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB6PMDB02>-NUMPARTITN = 1.
<DB6PMDB02>-FSTTABRSTD = 1.
<DB6PMDB02>-FSTTABRSTT = 1.
<DB6PMDB02>-LSTTABRSTD = 1.
<DB6PMDB02>-LSTTABRSTT = 1.

ENDLOOP.

LOOP AT IT_DB6PMDB02 INTO WA_DB6PMDB02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB6PMDB02-TABANAD, sy-vline,
  WA_DB6PMDB02-TABANAT, sy-vline,
  WA_DB6PMDB02-TBSANAD, sy-vline,
  WA_DB6PMDB02-TBSANAT, sy-vline,
  WA_DB6PMDB02-TBSNUM, sy-vline,
  WA_DB6PMDB02-TOTALKB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB6PMDB02 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_DB6PMDB02 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_DB6PMDB02 INTO WA_DB6PMDB02.


*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_DB6PMDB02_STR, 
NUMPARTITN TYPE STRING,
FSTTABRSTD TYPE STRING,
FSTTABRSTT TYPE STRING,
LSTTABRSTD TYPE STRING,
LSTTABRSTT TYPE STRING,
TABANAD TYPE STRING,
TABANAT TYPE STRING,
TBSANAD TYPE STRING,
TBSANAT TYPE STRING,
TBSNUM TYPE STRING,
TOTALKB TYPE STRING,
FREEKB TYPE STRING,
PCTUSEDKB TYPE STRING,
MINFREEKB TYPE STRING,
MAXPCTUSED TYPE STRING,
TABNUM TYPE STRING,
TABSIZEKB TYPE STRING,
IDXNUM TYPE STRING,
IDXSIZEKB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB6PMDB02_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_DB6PMDB02_STR-NUMPARTITN sy-vline 
WA_DB6PMDB02_STR-FSTTABRSTD sy-vline 
WA_DB6PMDB02_STR-FSTTABRSTT sy-vline 
WA_DB6PMDB02_STR-LSTTABRSTD sy-vline 
WA_DB6PMDB02_STR-LSTTABRSTT sy-vline 
WA_DB6PMDB02_STR-TABANAD sy-vline 
WA_DB6PMDB02_STR-TABANAT sy-vline 
WA_DB6PMDB02_STR-TBSANAD sy-vline 
WA_DB6PMDB02_STR-TBSANAT sy-vline 
WA_DB6PMDB02_STR-TBSNUM sy-vline 
WA_DB6PMDB02_STR-TOTALKB sy-vline 
WA_DB6PMDB02_STR-FREEKB sy-vline 
WA_DB6PMDB02_STR-PCTUSEDKB sy-vline 
WA_DB6PMDB02_STR-MINFREEKB sy-vline 
WA_DB6PMDB02_STR-MAXPCTUSED sy-vline 
WA_DB6PMDB02_STR-TABNUM sy-vline 
WA_DB6PMDB02_STR-TABSIZEKB sy-vline 
WA_DB6PMDB02_STR-IDXNUM sy-vline 
WA_DB6PMDB02_STR-IDXSIZEKB sy-vline      INTO ld_text SEPARATED BY SPACE.

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