ABAP Select data from SAP table DB2THREADS 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 DB2THREADS 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 DB2THREADS. 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 DB2THREADS 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_DB2THREADS TYPE STANDARD TABLE OF DB2THREADS,
      WA_DB2THREADS TYPE DB2THREADS,
      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: <DB2THREADS> TYPE DB2THREADS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB2THREADS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB2THREADS
  INTO TABLE IT_DB2THREADS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB2THREADS
*  INTO TABLE @DATA(IT_DB2THREADS2).
*--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_DB2THREADS INDEX 1 INTO DATA(WA_DB2THREADS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB2THREADS ASSIGNING <DB2THREADS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB2THREADS>-HDSUBSYSID = 1.
<DB2THREADS>-HDATDAT = 1.
<DB2THREADS>-HDATTIM = 1.
<DB2THREADS>-HDLRESTIME = 1.
<DB2THREADS>-ACE = 1.

ENDLOOP.

LOOP AT IT_DB2THREADS INTO WA_DB2THREADS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB2THREADS-JOBNAME, sy-vline,
  WA_DB2THREADS-DBPLAN, sy-vline,
  WA_DB2THREADS-AUTHID, sy-vline,
  WA_DB2THREADS-CORRID, sy-vline,
  WA_DB2THREADS-CONNID, sy-vline,
  WA_DB2THREADS-THDSTAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB2THREADS 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_DB2THREADS 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_DB2THREADS INTO WA_DB2THREADS.


*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_DB2THREADS_STR, 
HDSUBSYSID TYPE STRING,
HDATDAT TYPE STRING,
HDATTIM TYPE STRING,
HDLRESTIME TYPE STRING,
ACE TYPE STRING,
JOBNAME TYPE STRING,
DBPLAN TYPE STRING,
AUTHID TYPE STRING,
CORRID TYPE STRING,
CONNID TYPE STRING,
THDSTAT TYPE STRING,
FILLER TYPE STRING,
SQLCNT TYPE STRING,
DBCOMMIT TYPE STRING,
ABORT TYPE STRING,
GETPAGE TYPE STRING,
UPDPAGE TYPE STRING,
LOCKS TYPE STRING,
CPUTIME TYPE STRING,
ELTIME TYPE STRING,
LOCKMOD TYPE STRING,
ACTTIME TYPE STRING,
TIMEINDB2 TYPE STRING,
PROCINDB2 TYPE STRING,
WPTYPE TYPE STRING,
WPNUMBER TYPE STRING,
WPID TYPE STRING,
ASHOST TYPE STRING,
THDREQ TYPE STRING,
ADTHRSTA TYPE STRING,
PRCINDB2 TYPE STRING,
SSPINDB2 TYPE STRING,
DS_MEMBER TYPE STRING,
THDMLOCKS TYPE STRING,
CONNNAME TYPE STRING,
QMDAPLAT TYPE STRING,
QWHDRQNM TYPE STRING,
SAPSID TYPE STRING,
SAPSYS TYPE STRING,
ABAPREP TYPE STRING,
TXCODE TYPE STRING,
ENDUSER TYPE STRING,
J2EESERV TYPE STRING,
QWACPARR TYPE STRING,
QW0148CI TYPE STRING,
QW0148ST TYPE STRING,
QW0148TTK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB2THREADS_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_DB2THREADS_STR-HDSUBSYSID sy-vline 
WA_DB2THREADS_STR-HDATDAT sy-vline 
WA_DB2THREADS_STR-HDATTIM sy-vline 
WA_DB2THREADS_STR-HDLRESTIME sy-vline 
WA_DB2THREADS_STR-ACE sy-vline 
WA_DB2THREADS_STR-JOBNAME sy-vline 
WA_DB2THREADS_STR-DBPLAN sy-vline 
WA_DB2THREADS_STR-AUTHID sy-vline 
WA_DB2THREADS_STR-CORRID sy-vline 
WA_DB2THREADS_STR-CONNID sy-vline 
WA_DB2THREADS_STR-THDSTAT sy-vline 
WA_DB2THREADS_STR-FILLER sy-vline 
WA_DB2THREADS_STR-SQLCNT sy-vline 
WA_DB2THREADS_STR-DBCOMMIT sy-vline 
WA_DB2THREADS_STR-ABORT sy-vline 
WA_DB2THREADS_STR-GETPAGE sy-vline 
WA_DB2THREADS_STR-UPDPAGE sy-vline 
WA_DB2THREADS_STR-LOCKS sy-vline 
WA_DB2THREADS_STR-CPUTIME sy-vline 
WA_DB2THREADS_STR-ELTIME sy-vline 
WA_DB2THREADS_STR-LOCKMOD sy-vline 
WA_DB2THREADS_STR-ACTTIME sy-vline 
WA_DB2THREADS_STR-TIMEINDB2 sy-vline 
WA_DB2THREADS_STR-PROCINDB2 sy-vline 
WA_DB2THREADS_STR-WPTYPE sy-vline 
WA_DB2THREADS_STR-WPNUMBER sy-vline 
WA_DB2THREADS_STR-WPID sy-vline 
WA_DB2THREADS_STR-ASHOST sy-vline 
WA_DB2THREADS_STR-THDREQ sy-vline 
WA_DB2THREADS_STR-ADTHRSTA sy-vline 
WA_DB2THREADS_STR-PRCINDB2 sy-vline 
WA_DB2THREADS_STR-SSPINDB2 sy-vline 
WA_DB2THREADS_STR-DS_MEMBER sy-vline 
WA_DB2THREADS_STR-THDMLOCKS sy-vline 
WA_DB2THREADS_STR-CONNNAME sy-vline 
WA_DB2THREADS_STR-QMDAPLAT sy-vline 
WA_DB2THREADS_STR-QWHDRQNM sy-vline 
WA_DB2THREADS_STR-SAPSID sy-vline 
WA_DB2THREADS_STR-SAPSYS sy-vline 
WA_DB2THREADS_STR-ABAPREP sy-vline 
WA_DB2THREADS_STR-TXCODE sy-vline 
WA_DB2THREADS_STR-ENDUSER sy-vline 
WA_DB2THREADS_STR-J2EESERV sy-vline 
WA_DB2THREADS_STR-QWACPARR sy-vline 
WA_DB2THREADS_STR-QW0148CI sy-vline 
WA_DB2THREADS_STR-QW0148ST sy-vline 
WA_DB2THREADS_STR-QW0148TTK sy-vline      INTO ld_text SEPARATED BY SPACE.

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