ABAP Select data from SAP table SDBCMDSTAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SDBCMDSTAT
*  INTO TABLE @DATA(IT_SDBCMDSTAT2).
*--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_SDBCMDSTAT INDEX 1 INTO DATA(WA_SDBCMDSTAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SDBCMDSTAT>-COMMANDID = 1.
<SDBCMDSTAT>-INTERNAL = 1.
<SDBCMDSTAT>-HASHVALUE = 1.
<SDBCMDSTAT>-HASHTBSLOT = 1.
<SDBCMDSTAT>-STATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SDBCMDSTAT-USERNAME, sy-vline,
  WA_SDBCMDSTAT-SCHEMANAME, sy-vline,
  WA_SDBCMDSTAT-SQLMODE, sy-vline,
  WA_SDBCMDSTAT-ISOLEVEL, sy-vline,
  WA_SDBCMDSTAT-DATEFORMAT, sy-vline,
  WA_SDBCMDSTAT-MASSCMD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SDBCMDSTAT 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_SDBCMDSTAT 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_SDBCMDSTAT INTO WA_SDBCMDSTAT.


*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_SDBCMDSTAT_STR, 
COMMANDID TYPE STRING,
INTERNAL TYPE STRING,
HASHVALUE TYPE STRING,
HASHTBSLOT TYPE STRING,
STATUS TYPE STRING,
USERNAME TYPE STRING,
SCHEMANAME TYPE STRING,
SQLMODE TYPE STRING,
ISOLEVEL TYPE STRING,
DATEFORMAT TYPE STRING,
MASSCMD TYPE STRING,
CODETYPE TYPE STRING,
STMNTSIZE TYPE STRING,
S_SQLSTMNT TYPE STRING,
PLANSIZE TYPE STRING,
PREPCOUNT TYPE STRING,
REFCOUNT TYPE STRING,
CUREXECCNT TYPE STRING,
EXEC_COUNT TYPE STRING,
PREP_TIME TYPE STRING,
EXEC_TIME TYPE STRING,
AVGEXECTIM TYPE STRING,
MINEXECTIM TYPE STRING,
MAXEXECTIM TYPE STRING,
ROWS_READ TYPE STRING,
ROWS_QUAL TYPE STRING,
VIRTUAL_R TYPE STRING,
PHYS_READ TYPE STRING,
R_FETCHED TYPE STRING,
VSUSPENDS TYPE STRING,
VWAITS TYPE STRING,
RQ_PEREXEC TYPE STRING,
VR_PEREXEC TYPE STRING,
VR_PERLINE TYPE STRING,
TABNAME TYPE STRING,
OPERATION TYPE STRING,
TOTAL_IO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SDBCMDSTAT_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_SDBCMDSTAT_STR-COMMANDID sy-vline 
WA_SDBCMDSTAT_STR-INTERNAL sy-vline 
WA_SDBCMDSTAT_STR-HASHVALUE sy-vline 
WA_SDBCMDSTAT_STR-HASHTBSLOT sy-vline 
WA_SDBCMDSTAT_STR-STATUS sy-vline 
WA_SDBCMDSTAT_STR-USERNAME sy-vline 
WA_SDBCMDSTAT_STR-SCHEMANAME sy-vline 
WA_SDBCMDSTAT_STR-SQLMODE sy-vline 
WA_SDBCMDSTAT_STR-ISOLEVEL sy-vline 
WA_SDBCMDSTAT_STR-DATEFORMAT sy-vline 
WA_SDBCMDSTAT_STR-MASSCMD sy-vline 
WA_SDBCMDSTAT_STR-CODETYPE sy-vline 
WA_SDBCMDSTAT_STR-STMNTSIZE sy-vline 
WA_SDBCMDSTAT_STR-S_SQLSTMNT sy-vline 
WA_SDBCMDSTAT_STR-PLANSIZE sy-vline 
WA_SDBCMDSTAT_STR-PREPCOUNT sy-vline 
WA_SDBCMDSTAT_STR-REFCOUNT sy-vline 
WA_SDBCMDSTAT_STR-CUREXECCNT sy-vline 
WA_SDBCMDSTAT_STR-EXEC_COUNT sy-vline 
WA_SDBCMDSTAT_STR-PREP_TIME sy-vline 
WA_SDBCMDSTAT_STR-EXEC_TIME sy-vline 
WA_SDBCMDSTAT_STR-AVGEXECTIM sy-vline 
WA_SDBCMDSTAT_STR-MINEXECTIM sy-vline 
WA_SDBCMDSTAT_STR-MAXEXECTIM sy-vline 
WA_SDBCMDSTAT_STR-ROWS_READ sy-vline 
WA_SDBCMDSTAT_STR-ROWS_QUAL sy-vline 
WA_SDBCMDSTAT_STR-VIRTUAL_R sy-vline 
WA_SDBCMDSTAT_STR-PHYS_READ sy-vline 
WA_SDBCMDSTAT_STR-R_FETCHED sy-vline 
WA_SDBCMDSTAT_STR-VSUSPENDS sy-vline 
WA_SDBCMDSTAT_STR-VWAITS sy-vline 
WA_SDBCMDSTAT_STR-RQ_PEREXEC sy-vline 
WA_SDBCMDSTAT_STR-VR_PEREXEC sy-vline 
WA_SDBCMDSTAT_STR-VR_PERLINE sy-vline 
WA_SDBCMDSTAT_STR-TABNAME sy-vline 
WA_SDBCMDSTAT_STR-OPERATION sy-vline 
WA_SDBCMDSTAT_STR-TOTAL_IO sy-vline      INTO ld_text SEPARATED BY SPACE.

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