ABAP Select data from SAP table MSQ_DBDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MSQ_DBDATA
*  INTO TABLE @DATA(IT_MSQ_DBDATA2).
*--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_MSQ_DBDATA INDEX 1 INTO DATA(WA_MSQ_DBDATA2).


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

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

ENDLOOP.

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

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


*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_MSQ_DBDATA_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,
ARITHABORT TYPE STRING,
NUMRNDABRT 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_MSQ_DBDATA_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_MSQ_DBDATA_STR-DBNAME sy-vline 
WA_MSQ_DBDATA_STR-CRDATE sy-vline 
WA_MSQ_DBDATA_STR-CMPTLEVEL sy-vline 
WA_MSQ_DBDATA_STR-AUTOSTCRE sy-vline 
WA_MSQ_DBDATA_STR-AUTOSTUPD sy-vline 
WA_MSQ_DBDATA_STR-AUTOCLOSE sy-vline 
WA_MSQ_DBDATA_STR-BULKCOPY sy-vline 
WA_MSQ_DBDATA_STR-TRUCLOG sy-vline 
WA_MSQ_DBDATA_STR-TORNPGDET sy-vline 
WA_MSQ_DBDATA_STR-LOADING sy-vline 
WA_MSQ_DBDATA_STR-PRERECVY sy-vline 
WA_MSQ_DBDATA_STR-RECOVERY sy-vline 
WA_MSQ_DBDATA_STR-NOTRECVR sy-vline 
WA_MSQ_DBDATA_STR-DBOFFLINE sy-vline 
WA_MSQ_DBDATA_STR-READONLY sy-vline 
WA_MSQ_DBDATA_STR-DBOONLY sy-vline 
WA_MSQ_DBDATA_STR-SINGLEUSER sy-vline 
WA_MSQ_DBDATA_STR-EMERGYMD sy-vline 
WA_MSQ_DBDATA_STR-AUTOSHRINK sy-vline 
WA_MSQ_DBDATA_STR-CLNSHTDWN sy-vline 
WA_MSQ_DBDATA_STR-ANSINULDEF sy-vline 
WA_MSQ_DBDATA_STR-CCNULL sy-vline 
WA_MSQ_DBDATA_STR-RECTRIGGER sy-vline 
WA_MSQ_DBDATA_STR-DEFLOCCUR sy-vline 
WA_MSQ_DBDATA_STR-QUOTEDID sy-vline 
WA_MSQ_DBDATA_STR-CCONCOMMIT sy-vline 
WA_MSQ_DBDATA_STR-ANSINULLS sy-vline 
WA_MSQ_DBDATA_STR-ANSIWARN sy-vline 
WA_MSQ_DBDATA_STR-FULLTXTEN sy-vline 
WA_MSQ_DBDATA_STR-DBSUSPECT sy-vline 
WA_MSQ_DBDATA_STR-DBSHUTDOWN sy-vline 
WA_MSQ_DBDATA_STR-DBSTANDBY sy-vline 
WA_MSQ_DBDATA_STR-ARITHABORT sy-vline 
WA_MSQ_DBDATA_STR-NUMRNDABRT sy-vline 
WA_MSQ_DBDATA_STR-DBSIZE sy-vline 
WA_MSQ_DBDATA_STR-DBFREE sy-vline 
WA_MSQ_DBDATA_STR-DBUSED sy-vline 
WA_MSQ_DBDATA_STR-LOGSIZE sy-vline 
WA_MSQ_DBDATA_STR-LOGFREE sy-vline 
WA_MSQ_DBDATA_STR-LOGUSED sy-vline 
WA_MSQ_DBDATA_STR-DBNUMSAP sy-vline 
WA_MSQ_DBDATA_STR-DBNUMOTHER sy-vline 
WA_MSQ_DBDATA_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.