ABAP Select data from SAP table SQLMZVDISZ into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SQLMZVDISZ 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 SQLMZVDISZ. 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 SQLMZVDISZ 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_SQLMZVDISZ TYPE STANDARD TABLE OF SQLMZVDISZ,
      WA_SQLMZVDISZ TYPE SQLMZVDISZ,
      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: <SQLMZVDISZ> TYPE SQLMZVDISZ.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SQLMZVDISZ
*  INTO TABLE @DATA(IT_SQLMZVDISZ2).
*--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_SQLMZVDISZ INDEX 1 INTO DATA(WA_SQLMZVDISZ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SQLMZVDISZ>-MEASID = 1.
<SQLMZVDISZ>-INFOID = 1.
<SQLMZVDISZ>-SUBID = 1.
<SQLMZVDISZ>-TIMEID = 1.
<SQLMZVDISZ>-PROGNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SQLMZVDISZ-PROGKIND, sy-vline,
  WA_SQLMZVDISZ-PROCTYPE, sy-vline,
  WA_SQLMZVDISZ-PROCNAME, sy-vline,
  WA_SQLMZVDISZ-PROCLINE, sy-vline,
  WA_SQLMZVDISZ-HASHCODE, sy-vline,
  WA_SQLMZVDISZ-INCLUDE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SQLMZVDISZ 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_SQLMZVDISZ 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_SQLMZVDISZ INTO WA_SQLMZVDISZ.


*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_SQLMZVDISZ_STR, 
MEASID TYPE STRING,
INFOID TYPE STRING,
SUBID TYPE STRING,
TIMEID TYPE STRING,
PROGNAME TYPE STRING,
PROGKIND TYPE STRING,
PROCTYPE TYPE STRING,
PROCNAME TYPE STRING,
PROCLINE TYPE STRING,
HASHCODE TYPE STRING,
INCLUDE TYPE STRING,
LINE TYPE STRING,
FRAGMENT TYPE STRING,
PGMID TYPE STRING,
OBJECT TYPE STRING,
OBJ_NAME TYPE STRING,
DEVCLASS TYPE STRING,
PROGDATE TYPE STRING,
PROGTIME TYPE STRING,
OUTDATED TYPE STRING,
RUNLEVEL TYPE STRING,
ROOTTYPE TYPE STRING,
ROOTNAME TYPE STRING,
STMTKIND TYPE STRING,
TABLENAMES TYPE STRING,
XCNT TYPE STRING,
RCNT TYPE STRING,
RTMIN TYPE STRING,
RTMAX TYPE STRING,
RTSUM TYPE STRING,
RTSQS TYPE STRING,
DBMIN TYPE STRING,
DBMAX TYPE STRING,
DBSUM TYPE STRING,
DBSQS TYPE STRING,
TABLENAME01 TYPE STRING,
TABLENAME02 TYPE STRING,
TABLENAME03 TYPE STRING,
TABLENAME04 TYPE STRING,
TABLENAME05 TYPE STRING,
TABLENAME06 TYPE STRING,
TABLENAME07 TYPE STRING,
TABLENAME08 TYPE STRING,
TABLENAME09 TYPE STRING,
TABLENAME10 TYPE STRING,
UNIXTIMEFROM TYPE STRING,
UNIXTIMETO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SQLMZVDISZ_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_SQLMZVDISZ_STR-MEASID sy-vline 
WA_SQLMZVDISZ_STR-INFOID sy-vline 
WA_SQLMZVDISZ_STR-SUBID sy-vline 
WA_SQLMZVDISZ_STR-TIMEID sy-vline 
WA_SQLMZVDISZ_STR-PROGNAME sy-vline 
WA_SQLMZVDISZ_STR-PROGKIND sy-vline 
WA_SQLMZVDISZ_STR-PROCTYPE sy-vline 
WA_SQLMZVDISZ_STR-PROCNAME sy-vline 
WA_SQLMZVDISZ_STR-PROCLINE sy-vline 
WA_SQLMZVDISZ_STR-HASHCODE sy-vline 
WA_SQLMZVDISZ_STR-INCLUDE sy-vline 
WA_SQLMZVDISZ_STR-LINE sy-vline 
WA_SQLMZVDISZ_STR-FRAGMENT sy-vline 
WA_SQLMZVDISZ_STR-PGMID sy-vline 
WA_SQLMZVDISZ_STR-OBJECT sy-vline 
WA_SQLMZVDISZ_STR-OBJ_NAME sy-vline 
WA_SQLMZVDISZ_STR-DEVCLASS sy-vline 
WA_SQLMZVDISZ_STR-PROGDATE sy-vline 
WA_SQLMZVDISZ_STR-PROGTIME sy-vline 
WA_SQLMZVDISZ_STR-OUTDATED sy-vline 
WA_SQLMZVDISZ_STR-RUNLEVEL sy-vline 
WA_SQLMZVDISZ_STR-ROOTTYPE sy-vline 
WA_SQLMZVDISZ_STR-ROOTNAME sy-vline 
WA_SQLMZVDISZ_STR-STMTKIND sy-vline 
WA_SQLMZVDISZ_STR-TABLENAMES sy-vline 
WA_SQLMZVDISZ_STR-XCNT sy-vline 
WA_SQLMZVDISZ_STR-RCNT sy-vline 
WA_SQLMZVDISZ_STR-RTMIN sy-vline 
WA_SQLMZVDISZ_STR-RTMAX sy-vline 
WA_SQLMZVDISZ_STR-RTSUM sy-vline 
WA_SQLMZVDISZ_STR-RTSQS sy-vline 
WA_SQLMZVDISZ_STR-DBMIN sy-vline 
WA_SQLMZVDISZ_STR-DBMAX sy-vline 
WA_SQLMZVDISZ_STR-DBSUM sy-vline 
WA_SQLMZVDISZ_STR-DBSQS sy-vline 
WA_SQLMZVDISZ_STR-TABLENAME01 sy-vline 
WA_SQLMZVDISZ_STR-TABLENAME02 sy-vline 
WA_SQLMZVDISZ_STR-TABLENAME03 sy-vline 
WA_SQLMZVDISZ_STR-TABLENAME04 sy-vline 
WA_SQLMZVDISZ_STR-TABLENAME05 sy-vline 
WA_SQLMZVDISZ_STR-TABLENAME06 sy-vline 
WA_SQLMZVDISZ_STR-TABLENAME07 sy-vline 
WA_SQLMZVDISZ_STR-TABLENAME08 sy-vline 
WA_SQLMZVDISZ_STR-TABLENAME09 sy-vline 
WA_SQLMZVDISZ_STR-TABLENAME10 sy-vline 
WA_SQLMZVDISZ_STR-UNIXTIMEFROM sy-vline 
WA_SQLMZVDISZ_STR-UNIXTIMETO sy-vline      INTO ld_text SEPARATED BY SPACE.

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