ABAP Select data from SAP table /SDF/MSSSTSERV620 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SDF/MSSSTSERV620 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/MSSSTSERV620. 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/MSSSTSERV620 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/MSSSTSERV620 TYPE STANDARD TABLE OF /SDF/MSSSTSERV620,
      WA_/SDF/MSSSTSERV620 TYPE /SDF/MSSSTSERV620,
      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/MSSSTSERV620> TYPE /SDF/MSSSTSERV620.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SDF/MSSSTSERV620.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SDF/MSSSTSERV620
  INTO TABLE IT_/SDF/MSSSTSERV620.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SDF/MSSSTSERV620
*  INTO TABLE @DATA(IT_/SDF/MSSSTSERV6202).
*--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/MSSSTSERV620 INDEX 1 INTO DATA(WA_/SDF/MSSSTSERV6202).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SDF/MSSSTSERV620 ASSIGNING </SDF/MSSSTSERV620>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SDF/MSSSTSERV620>-HOSTNAME = 1.
</SDF/MSSSTSERV620>-SQLVERSION = 1.
</SDF/MSSSTSERV620>-SQLBUILDNM = 1.
</SDF/MSSSTSERV620>-PRODLEVEL = 1.
</SDF/MSSSTSERV620>-SQLSTARTTM = 1.

ENDLOOP.

LOOP AT IT_/SDF/MSSSTSERV620 INTO WA_/SDF/MSSSTSERV620.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SDF/MSSSTSERV620-SQLEE, sy-vline,
  WA_/SDF/MSSSTSERV620-NTVER, sy-vline,
  WA_/SDF/MSSSTSERV620-PARAMDIFF, sy-vline,
  WA_/SDF/MSSSTSERV620-DISKPERF, sy-vline,
  WA_/SDF/MSSSTSERV620-ISCLUSTER, sy-vline,
  WA_/SDF/MSSSTSERV620-IS3GB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SDF/MSSSTSERV620 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/MSSSTSERV620 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/MSSSTSERV620 INTO WA_/SDF/MSSSTSERV620.


*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/MSSSTSERV620_STR, 
HOSTNAME TYPE STRING,
SQLVERSION TYPE STRING,
SQLBUILDNM TYPE STRING,
PRODLEVEL TYPE STRING,
SQLSTARTTM TYPE STRING,
SQLEE TYPE STRING,
NTVER TYPE STRING,
PARAMDIFF TYPE STRING,
DISKPERF TYPE STRING,
ISCLUSTER TYPE STRING,
IS3GB TYPE STRING,
ISPAE TYPE STRING,
ISAWE TYPE STRING,
CHIP TYPE STRING,
WINVER TYPE STRING,
NUMCPUS TYPE STRING,
SQLCPUS TYPE STRING,
MASK TYPE STRING,
PHYMEM TYPE STRING,
TRACEFLAGS TYPE STRING,
MEMSETTING TYPE STRING,
AGTLOGLOC TYPE STRING,
ERRLOGLOC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SDF/MSSSTSERV620_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/MSSSTSERV620_STR-HOSTNAME sy-vline 
WA_/SDF/MSSSTSERV620_STR-SQLVERSION sy-vline 
WA_/SDF/MSSSTSERV620_STR-SQLBUILDNM sy-vline 
WA_/SDF/MSSSTSERV620_STR-PRODLEVEL sy-vline 
WA_/SDF/MSSSTSERV620_STR-SQLSTARTTM sy-vline 
WA_/SDF/MSSSTSERV620_STR-SQLEE sy-vline 
WA_/SDF/MSSSTSERV620_STR-NTVER sy-vline 
WA_/SDF/MSSSTSERV620_STR-PARAMDIFF sy-vline 
WA_/SDF/MSSSTSERV620_STR-DISKPERF sy-vline 
WA_/SDF/MSSSTSERV620_STR-ISCLUSTER sy-vline 
WA_/SDF/MSSSTSERV620_STR-IS3GB sy-vline 
WA_/SDF/MSSSTSERV620_STR-ISPAE sy-vline 
WA_/SDF/MSSSTSERV620_STR-ISAWE sy-vline 
WA_/SDF/MSSSTSERV620_STR-CHIP sy-vline 
WA_/SDF/MSSSTSERV620_STR-WINVER sy-vline 
WA_/SDF/MSSSTSERV620_STR-NUMCPUS sy-vline 
WA_/SDF/MSSSTSERV620_STR-SQLCPUS sy-vline 
WA_/SDF/MSSSTSERV620_STR-MASK sy-vline 
WA_/SDF/MSSSTSERV620_STR-PHYMEM sy-vline 
WA_/SDF/MSSSTSERV620_STR-TRACEFLAGS sy-vline 
WA_/SDF/MSSSTSERV620_STR-MEMSETTING sy-vline 
WA_/SDF/MSSSTSERV620_STR-AGTLOGLOC sy-vline 
WA_/SDF/MSSSTSERV620_STR-ERRLOGLOC sy-vline      INTO ld_text SEPARATED BY SPACE.

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