ABAP Select data from SAP table SITSSESSMEMSTAT into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SITSSESSMEMSTAT
*  INTO TABLE @DATA(IT_SITSSESSMEMSTAT2).
*--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_SITSSESSMEMSTAT INDEX 1 INTO DATA(WA_SITSSESSMEMSTAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SITSSESSMEMSTAT>-SESSID = 1.
<SITSSESSMEMSTAT>-MAXMEM = 1.
<SITSSESSMEMSTAT>-CURRMEM = 1.
<SITSSESSMEMSTAT>-ALLOCS = 1.
<SITSSESSMEMSTAT>-ACTIVEALLOCS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SITSSESSMEMSTAT-OMRTMAXMEM, sy-vline,
  WA_SITSSESSMEMSTAT-OMRTCURRMEM, sy-vline,
  WA_SITSSESSMEMSTAT-OMRTALLOCS, sy-vline,
  WA_SITSSESSMEMSTAT-OMRTACTIVE, sy-vline,
  WA_SITSSESSMEMSTAT-IMODEMAXMEM, sy-vline,
  WA_SITSSESSMEMSTAT-IMODECURRMEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SITSSESSMEMSTAT 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_SITSSESSMEMSTAT 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_SITSSESSMEMSTAT INTO WA_SITSSESSMEMSTAT.


*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_SITSSESSMEMSTAT_STR, 
SESSID TYPE STRING,
MAXMEM TYPE STRING,
CURRMEM TYPE STRING,
ALLOCS TYPE STRING,
ACTIVEALLOCS TYPE STRING,
OMRTMAXMEM TYPE STRING,
OMRTCURRMEM TYPE STRING,
OMRTALLOCS TYPE STRING,
OMRTACTIVE TYPE STRING,
IMODEMAXMEM TYPE STRING,
IMODECURRMEM TYPE STRING,
IMODEALLOCS TYPE STRING,
IMODEACTIVE TYPE STRING,
IMODEOMRTMAX TYPE STRING,
IMODEOMRTCURR TYPE STRING,
IMODEOMRTALLOCS TYPE STRING,
IMODEOMRTACTIVE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SITSSESSMEMSTAT_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_SITSSESSMEMSTAT_STR-SESSID sy-vline 
WA_SITSSESSMEMSTAT_STR-MAXMEM sy-vline 
WA_SITSSESSMEMSTAT_STR-CURRMEM sy-vline 
WA_SITSSESSMEMSTAT_STR-ALLOCS sy-vline 
WA_SITSSESSMEMSTAT_STR-ACTIVEALLOCS sy-vline 
WA_SITSSESSMEMSTAT_STR-OMRTMAXMEM sy-vline 
WA_SITSSESSMEMSTAT_STR-OMRTCURRMEM sy-vline 
WA_SITSSESSMEMSTAT_STR-OMRTALLOCS sy-vline 
WA_SITSSESSMEMSTAT_STR-OMRTACTIVE sy-vline 
WA_SITSSESSMEMSTAT_STR-IMODEMAXMEM sy-vline 
WA_SITSSESSMEMSTAT_STR-IMODECURRMEM sy-vline 
WA_SITSSESSMEMSTAT_STR-IMODEALLOCS sy-vline 
WA_SITSSESSMEMSTAT_STR-IMODEACTIVE sy-vline 
WA_SITSSESSMEMSTAT_STR-IMODEOMRTMAX sy-vline 
WA_SITSSESSMEMSTAT_STR-IMODEOMRTCURR sy-vline 
WA_SITSSESSMEMSTAT_STR-IMODEOMRTALLOCS sy-vline 
WA_SITSSESSMEMSTAT_STR-IMODEOMRTACTIVE sy-vline      INTO ld_text SEPARATED BY SPACE.

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