ABAP Select data from SAP table SQLMVDIT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SQLMVDIT
*  INTO TABLE @DATA(IT_SQLMVDIT2).
*--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_SQLMVDIT INDEX 1 INTO DATA(WA_SQLMVDIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SQLMVDIT>-PROGNAME = 1.
<SQLMVDIT>-PROGKIND = 1.
<SQLMVDIT>-PROCTYPE = 1.
<SQLMVDIT>-PROCNAME = 1.
<SQLMVDIT>-PROCLINE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SQLMVDIT-RUNLEVEL, sy-vline,
  WA_SQLMVDIT-ROOTTYPE, sy-vline,
  WA_SQLMVDIT-ROOTNAME, sy-vline,
  WA_SQLMVDIT-STMTKIND, sy-vline,
  WA_SQLMVDIT-TABLENAMES, sy-vline,
  WA_SQLMVDIT-TABLENAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SQLMVDIT 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_SQLMVDIT 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_SQLMVDIT INTO WA_SQLMVDIT.


*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_SQLMVDIT_STR, 
PROGNAME TYPE STRING,
PROGKIND TYPE STRING,
PROCTYPE TYPE STRING,
PROCNAME TYPE STRING,
PROCLINE TYPE STRING,
RUNLEVEL TYPE STRING,
ROOTTYPE TYPE STRING,
ROOTNAME TYPE STRING,
STMTKIND TYPE STRING,
TABLENAMES TYPE STRING,
TABLENAME TYPE STRING,
INCLUDE TYPE STRING,
LINE TYPE STRING,
PGMID TYPE STRING,
OBJECT TYPE STRING,
OBJ_NAME TYPE STRING,
DEVCLASS TYPE STRING,
XCNT TYPE STRING,
RCNT TYPE STRING,
XCNTRCNT TYPE STRING,
RTMIN TYPE STRING,
RTMAX TYPE STRING,
RTCNT TYPE STRING,
RTSUM TYPE STRING,
RTSQS TYPE STRING,
RTAVG TYPE STRING,
RTDEV TYPE STRING,
DBMIN TYPE STRING,
DBMAX TYPE STRING,
DBCNT TYPE STRING,
DBSUM TYPE STRING,
DBSQS TYPE STRING,
DBAVG TYPE STRING,
DBDEV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SQLMVDIT_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_SQLMVDIT_STR-PROGNAME sy-vline 
WA_SQLMVDIT_STR-PROGKIND sy-vline 
WA_SQLMVDIT_STR-PROCTYPE sy-vline 
WA_SQLMVDIT_STR-PROCNAME sy-vline 
WA_SQLMVDIT_STR-PROCLINE sy-vline 
WA_SQLMVDIT_STR-RUNLEVEL sy-vline 
WA_SQLMVDIT_STR-ROOTTYPE sy-vline 
WA_SQLMVDIT_STR-ROOTNAME sy-vline 
WA_SQLMVDIT_STR-STMTKIND sy-vline 
WA_SQLMVDIT_STR-TABLENAMES sy-vline 
WA_SQLMVDIT_STR-TABLENAME sy-vline 
WA_SQLMVDIT_STR-INCLUDE sy-vline 
WA_SQLMVDIT_STR-LINE sy-vline 
WA_SQLMVDIT_STR-PGMID sy-vline 
WA_SQLMVDIT_STR-OBJECT sy-vline 
WA_SQLMVDIT_STR-OBJ_NAME sy-vline 
WA_SQLMVDIT_STR-DEVCLASS sy-vline 
WA_SQLMVDIT_STR-XCNT sy-vline 
WA_SQLMVDIT_STR-RCNT sy-vline 
WA_SQLMVDIT_STR-XCNTRCNT sy-vline 
WA_SQLMVDIT_STR-RTMIN sy-vline 
WA_SQLMVDIT_STR-RTMAX sy-vline 
WA_SQLMVDIT_STR-RTCNT sy-vline 
WA_SQLMVDIT_STR-RTSUM sy-vline 
WA_SQLMVDIT_STR-RTSQS sy-vline 
WA_SQLMVDIT_STR-RTAVG sy-vline 
WA_SQLMVDIT_STR-RTDEV sy-vline 
WA_SQLMVDIT_STR-DBMIN sy-vline 
WA_SQLMVDIT_STR-DBMAX sy-vline 
WA_SQLMVDIT_STR-DBCNT sy-vline 
WA_SQLMVDIT_STR-DBSUM sy-vline 
WA_SQLMVDIT_STR-DBSQS sy-vline 
WA_SQLMVDIT_STR-DBAVG sy-vline 
WA_SQLMVDIT_STR-DBDEV sy-vline      INTO ld_text SEPARATED BY SPACE.

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