ABAP Select data from SAP table TST04SES64 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TST04SES64 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 TST04SES64. 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 TST04SES64 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_TST04SES64 TYPE STANDARD TABLE OF TST04SES64,
      WA_TST04SES64 TYPE TST04SES64,
      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: <TST04SES64> TYPE TST04SES64.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TST04SES64.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TST04SES64
  INTO TABLE IT_TST04SES64.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TST04SES64
*  INTO TABLE @DATA(IT_TST04SES642).
*--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_TST04SES64 INDEX 1 INTO DATA(WA_TST04SES642).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TST04SES64 ASSIGNING <TST04SES64>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TST04SES64>-SESSION_ID = 1.
<TST04SES64>-PID = 1.
<TST04SES64>-HOSTNAME = 1.
<TST04SES64>-OWNER = 1.
<TST04SES64>-THREAD_ID = 1.

ENDLOOP.

LOOP AT IT_TST04SES64 INTO WA_TST04SES64.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TST04SES64-THREADNAME, sy-vline,
  WA_TST04SES64-TH_STATE, sy-vline,
  WA_TST04SES64-TH_STATE_T, sy-vline,
  WA_TST04SES64-LOCKSHELD, sy-vline,
  WA_TST04SES64-WP_REPORT, sy-vline,
  WA_TST04SES64-WP_TABLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TST04SES64 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_TST04SES64 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_TST04SES64 INTO WA_TST04SES64.


*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_TST04SES64_STR, 
SESSION_ID TYPE STRING,
PID TYPE STRING,
HOSTNAME TYPE STRING,
OWNER TYPE STRING,
THREAD_ID TYPE STRING,
THREADNAME TYPE STRING,
TH_STATE TYPE STRING,
TH_STATE_T TYPE STRING,
LOCKSHELD TYPE STRING,
WP_REPORT TYPE STRING,
WP_TABLE TYPE STRING,
TTY TYPE STRING,
BUFREADS_S TYPE STRING,
BUFWRITS_S TYPE STRING,
LOCKREQS_S TYPE STRING,
LOCKWAIT_S TYPE STRING,
DEADLOCK_S TYPE STRING,
SEQSCANS_S TYPE STRING,
ISREADS_S TYPE STRING,
ISCHANGE_S TYPE STRING,
LONGTX_S TYPE STRING,
RUNTIME_S TYPE STRING,
WAITTIME_S TYPE STRING,
BUFREADS_C TYPE STRING,
BUFWRITS_C TYPE STRING,
LOCKREQS_C TYPE STRING,
LOCKWAIT_C TYPE STRING,
DEADLOCK_C TYPE STRING,
SEQSCANS_C TYPE STRING,
ISREADS_C TYPE STRING,
ISCHANGE_C TYPE STRING,
LONGTX_C TYPE STRING,
RUNTIME_C TYPE STRING,
WAITTIME_C TYPE STRING,
BUFREADS_R TYPE STRING,
BUFWRITS_R TYPE STRING,
LOCKREQS_R TYPE STRING,
LOCKWAIT_R TYPE STRING,
DEADLOCK_R TYPE STRING,
SEQSCANS_R TYPE STRING,
ISREADS_R TYPE STRING,
ISCHANGE_R TYPE STRING,
LONGTX_R TYPE STRING,
RUNTIME_R TYPE STRING,
WAITTIME_R TYPE STRING,
BUFREADS_P TYPE STRING,
BUFWRITS_P TYPE STRING,
LOCKREQS_P TYPE STRING,
LOCKWAIT_P TYPE STRING,
DEADLOCK_P TYPE STRING,
SEQSCANS_P TYPE STRING,
ISREADS_P TYPE STRING,
ISCHANGE_P TYPE STRING,
LONGTX_P TYPE STRING,
RUNTIME_P TYPE STRING,
WAITTIME_P TYPE STRING,
BUFREADS_L TYPE STRING,
BUFWRITS_L TYPE STRING,
LOCKREQS_L TYPE STRING,
LOCKWAIT_L TYPE STRING,
DEADLOCK_L TYPE STRING,
SEQSCANS_L TYPE STRING,
ISREADS_L TYPE STRING,
ISCHANGE_L TYPE STRING,
LONGTX_L TYPE STRING,
RUNTIME_L TYPE STRING,
WAITTIME_L TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TST04SES64_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_TST04SES64_STR-SESSION_ID sy-vline 
WA_TST04SES64_STR-PID sy-vline 
WA_TST04SES64_STR-HOSTNAME sy-vline 
WA_TST04SES64_STR-OWNER sy-vline 
WA_TST04SES64_STR-THREAD_ID sy-vline 
WA_TST04SES64_STR-THREADNAME sy-vline 
WA_TST04SES64_STR-TH_STATE sy-vline 
WA_TST04SES64_STR-TH_STATE_T sy-vline 
WA_TST04SES64_STR-LOCKSHELD sy-vline 
WA_TST04SES64_STR-WP_REPORT sy-vline 
WA_TST04SES64_STR-WP_TABLE sy-vline 
WA_TST04SES64_STR-TTY sy-vline 
WA_TST04SES64_STR-BUFREADS_S sy-vline 
WA_TST04SES64_STR-BUFWRITS_S sy-vline 
WA_TST04SES64_STR-LOCKREQS_S sy-vline 
WA_TST04SES64_STR-LOCKWAIT_S sy-vline 
WA_TST04SES64_STR-DEADLOCK_S sy-vline 
WA_TST04SES64_STR-SEQSCANS_S sy-vline 
WA_TST04SES64_STR-ISREADS_S sy-vline 
WA_TST04SES64_STR-ISCHANGE_S sy-vline 
WA_TST04SES64_STR-LONGTX_S sy-vline 
WA_TST04SES64_STR-RUNTIME_S sy-vline 
WA_TST04SES64_STR-WAITTIME_S sy-vline 
WA_TST04SES64_STR-BUFREADS_C sy-vline 
WA_TST04SES64_STR-BUFWRITS_C sy-vline 
WA_TST04SES64_STR-LOCKREQS_C sy-vline 
WA_TST04SES64_STR-LOCKWAIT_C sy-vline 
WA_TST04SES64_STR-DEADLOCK_C sy-vline 
WA_TST04SES64_STR-SEQSCANS_C sy-vline 
WA_TST04SES64_STR-ISREADS_C sy-vline 
WA_TST04SES64_STR-ISCHANGE_C sy-vline 
WA_TST04SES64_STR-LONGTX_C sy-vline 
WA_TST04SES64_STR-RUNTIME_C sy-vline 
WA_TST04SES64_STR-WAITTIME_C sy-vline 
WA_TST04SES64_STR-BUFREADS_R sy-vline 
WA_TST04SES64_STR-BUFWRITS_R sy-vline 
WA_TST04SES64_STR-LOCKREQS_R sy-vline 
WA_TST04SES64_STR-LOCKWAIT_R sy-vline 
WA_TST04SES64_STR-DEADLOCK_R sy-vline 
WA_TST04SES64_STR-SEQSCANS_R sy-vline 
WA_TST04SES64_STR-ISREADS_R sy-vline 
WA_TST04SES64_STR-ISCHANGE_R sy-vline 
WA_TST04SES64_STR-LONGTX_R sy-vline 
WA_TST04SES64_STR-RUNTIME_R sy-vline 
WA_TST04SES64_STR-WAITTIME_R sy-vline 
WA_TST04SES64_STR-BUFREADS_P sy-vline 
WA_TST04SES64_STR-BUFWRITS_P sy-vline 
WA_TST04SES64_STR-LOCKREQS_P sy-vline 
WA_TST04SES64_STR-LOCKWAIT_P sy-vline 
WA_TST04SES64_STR-DEADLOCK_P sy-vline 
WA_TST04SES64_STR-SEQSCANS_P sy-vline 
WA_TST04SES64_STR-ISREADS_P sy-vline 
WA_TST04SES64_STR-ISCHANGE_P sy-vline 
WA_TST04SES64_STR-LONGTX_P sy-vline 
WA_TST04SES64_STR-RUNTIME_P sy-vline 
WA_TST04SES64_STR-WAITTIME_P sy-vline 
WA_TST04SES64_STR-BUFREADS_L sy-vline 
WA_TST04SES64_STR-BUFWRITS_L sy-vline 
WA_TST04SES64_STR-LOCKREQS_L sy-vline 
WA_TST04SES64_STR-LOCKWAIT_L sy-vline 
WA_TST04SES64_STR-DEADLOCK_L sy-vline 
WA_TST04SES64_STR-SEQSCANS_L sy-vline 
WA_TST04SES64_STR-ISREADS_L sy-vline 
WA_TST04SES64_STR-ISCHANGE_L sy-vline 
WA_TST04SES64_STR-LONGTX_L sy-vline 
WA_TST04SES64_STR-RUNTIME_L sy-vline 
WA_TST04SES64_STR-WAITTIME_L sy-vline      INTO ld_text SEPARATED BY SPACE.

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