ABAP Select data from SAP table /SDF/MSSDBDATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SDF/MSSDBDATA 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 /SDF/MSSDBDATA. 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 /SDF/MSSDBDATA 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_/SDF/MSSDBDATA TYPE STANDARD TABLE OF /SDF/MSSDBDATA,
      WA_/SDF/MSSDBDATA TYPE /SDF/MSSDBDATA,
      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: </SDF/MSSDBDATA> TYPE /SDF/MSSDBDATA.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SDF/MSSDBDATA
  INTO TABLE IT_/SDF/MSSDBDATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SDF/MSSDBDATA
*  INTO TABLE @DATA(IT_/SDF/MSSDBDATA2).
*--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_/SDF/MSSDBDATA INDEX 1 INTO DATA(WA_/SDF/MSSDBDATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SDF/MSSDBDATA ASSIGNING </SDF/MSSDBDATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SDF/MSSDBDATA>-DBNAME = 1.
</SDF/MSSDBDATA>-CRDATE = 1.
</SDF/MSSDBDATA>-CMPTLEVEL = 1.
</SDF/MSSDBDATA>-AUTOSTCRE = 1.
</SDF/MSSDBDATA>-AUTOSTUPD = 1.

ENDLOOP.

LOOP AT IT_/SDF/MSSDBDATA INTO WA_/SDF/MSSDBDATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SDF/MSSDBDATA-AUTOCLOSE, sy-vline,
  WA_/SDF/MSSDBDATA-BULKCOPY, sy-vline,
  WA_/SDF/MSSDBDATA-TRUCLOG, sy-vline,
  WA_/SDF/MSSDBDATA-TORNPGDET, sy-vline,
  WA_/SDF/MSSDBDATA-LOADING, sy-vline,
  WA_/SDF/MSSDBDATA-PRERECVY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SDF/MSSDBDATA 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_/SDF/MSSDBDATA 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_/SDF/MSSDBDATA INTO WA_/SDF/MSSDBDATA.


*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_/SDF/MSSDBDATA_STR, 
DBNAME TYPE STRING,
CRDATE TYPE STRING,
CMPTLEVEL TYPE STRING,
AUTOSTCRE TYPE STRING,
AUTOSTUPD TYPE STRING,
AUTOCLOSE TYPE STRING,
BULKCOPY TYPE STRING,
TRUCLOG TYPE STRING,
TORNPGDET TYPE STRING,
LOADING TYPE STRING,
PRERECVY TYPE STRING,
RECOVERY TYPE STRING,
NOTRECVR TYPE STRING,
DBOFFLINE TYPE STRING,
READONLY TYPE STRING,
DBOONLY TYPE STRING,
SINGLEUSER TYPE STRING,
EMERGYMD TYPE STRING,
AUTOSHRINK TYPE STRING,
CLNSHTDWN TYPE STRING,
ANSINULDEF TYPE STRING,
CCNULL TYPE STRING,
RECTRIGGER TYPE STRING,
DEFLOCCUR TYPE STRING,
QUOTEDID TYPE STRING,
CCONCOMMIT TYPE STRING,
ANSINULLS TYPE STRING,
ANSIWARN TYPE STRING,
FULLTXTEN TYPE STRING,
DBSUSPECT TYPE STRING,
DBSHUTDOWN TYPE STRING,
DBSTANDBY TYPE STRING,
DBSIZE TYPE STRING,
DBFREE TYPE STRING,
DBUSED TYPE STRING,
LOGSIZE TYPE STRING,
LOGFREE TYPE STRING,
LOGUSED TYPE STRING,
DBNUMSAP TYPE STRING,
DBNUMOTHER TYPE STRING,
DBNDIFFUSE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SDF/MSSDBDATA_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_/SDF/MSSDBDATA_STR-DBNAME sy-vline 
WA_/SDF/MSSDBDATA_STR-CRDATE sy-vline 
WA_/SDF/MSSDBDATA_STR-CMPTLEVEL sy-vline 
WA_/SDF/MSSDBDATA_STR-AUTOSTCRE sy-vline 
WA_/SDF/MSSDBDATA_STR-AUTOSTUPD sy-vline 
WA_/SDF/MSSDBDATA_STR-AUTOCLOSE sy-vline 
WA_/SDF/MSSDBDATA_STR-BULKCOPY sy-vline 
WA_/SDF/MSSDBDATA_STR-TRUCLOG sy-vline 
WA_/SDF/MSSDBDATA_STR-TORNPGDET sy-vline 
WA_/SDF/MSSDBDATA_STR-LOADING sy-vline 
WA_/SDF/MSSDBDATA_STR-PRERECVY sy-vline 
WA_/SDF/MSSDBDATA_STR-RECOVERY sy-vline 
WA_/SDF/MSSDBDATA_STR-NOTRECVR sy-vline 
WA_/SDF/MSSDBDATA_STR-DBOFFLINE sy-vline 
WA_/SDF/MSSDBDATA_STR-READONLY sy-vline 
WA_/SDF/MSSDBDATA_STR-DBOONLY sy-vline 
WA_/SDF/MSSDBDATA_STR-SINGLEUSER sy-vline 
WA_/SDF/MSSDBDATA_STR-EMERGYMD sy-vline 
WA_/SDF/MSSDBDATA_STR-AUTOSHRINK sy-vline 
WA_/SDF/MSSDBDATA_STR-CLNSHTDWN sy-vline 
WA_/SDF/MSSDBDATA_STR-ANSINULDEF sy-vline 
WA_/SDF/MSSDBDATA_STR-CCNULL sy-vline 
WA_/SDF/MSSDBDATA_STR-RECTRIGGER sy-vline 
WA_/SDF/MSSDBDATA_STR-DEFLOCCUR sy-vline 
WA_/SDF/MSSDBDATA_STR-QUOTEDID sy-vline 
WA_/SDF/MSSDBDATA_STR-CCONCOMMIT sy-vline 
WA_/SDF/MSSDBDATA_STR-ANSINULLS sy-vline 
WA_/SDF/MSSDBDATA_STR-ANSIWARN sy-vline 
WA_/SDF/MSSDBDATA_STR-FULLTXTEN sy-vline 
WA_/SDF/MSSDBDATA_STR-DBSUSPECT sy-vline 
WA_/SDF/MSSDBDATA_STR-DBSHUTDOWN sy-vline 
WA_/SDF/MSSDBDATA_STR-DBSTANDBY sy-vline 
WA_/SDF/MSSDBDATA_STR-DBSIZE sy-vline 
WA_/SDF/MSSDBDATA_STR-DBFREE sy-vline 
WA_/SDF/MSSDBDATA_STR-DBUSED sy-vline 
WA_/SDF/MSSDBDATA_STR-LOGSIZE sy-vline 
WA_/SDF/MSSDBDATA_STR-LOGFREE sy-vline 
WA_/SDF/MSSDBDATA_STR-LOGUSED sy-vline 
WA_/SDF/MSSDBDATA_STR-DBNUMSAP sy-vline 
WA_/SDF/MSSDBDATA_STR-DBNUMOTHER sy-vline 
WA_/SDF/MSSDBDATA_STR-DBNDIFFUSE sy-vline      INTO ld_text SEPARATED BY SPACE.

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