ABAP Select data from SAP table DB2_VIEW_NETSTATS_DET into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB2_VIEW_NETSTATS_DET 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 DB2_VIEW_NETSTATS_DET. 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 DB2_VIEW_NETSTATS_DET 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_DB2_VIEW_NETSTATS_DET TYPE STANDARD TABLE OF DB2_VIEW_NETSTATS_DET,
      WA_DB2_VIEW_NETSTATS_DET TYPE DB2_VIEW_NETSTATS_DET,
      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: <DB2_VIEW_NETSTATS_DET> TYPE DB2_VIEW_NETSTATS_DET.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB2_VIEW_NETSTATS_DET.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB2_VIEW_NETSTATS_DET
  INTO TABLE IT_DB2_VIEW_NETSTATS_DET.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB2_VIEW_NETSTATS_DET
*  INTO TABLE @DATA(IT_DB2_VIEW_NETSTATS_DET2).
*--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_DB2_VIEW_NETSTATS_DET INDEX 1 INTO DATA(WA_DB2_VIEW_NETSTATS_DET2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB2_VIEW_NETSTATS_DET ASSIGNING <DB2_VIEW_NETSTATS_DET>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB2_VIEW_NETSTATS_DET>-NETSTATS = 1.
<DB2_VIEW_NETSTATS_DET>-INTERVALEND = 1.
<DB2_VIEW_NETSTATS_DET>-APPSERVER = 1.
<DB2_VIEW_NETSTATS_DET>-WP = 1.
<DB2_VIEW_NETSTATS_DET>-WPTYPE = 1.

ENDLOOP.

LOOP AT IT_DB2_VIEW_NETSTATS_DET INTO WA_DB2_VIEW_NETSTATS_DET.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB2_VIEW_NETSTATS_DET-INTERVALLENGTH, sy-vline,
  WA_DB2_VIEW_NETSTATS_DET-INVOCATIONS, sy-vline,
  WA_DB2_VIEW_NETSTATS_DET-SERVINVOCATIONS, sy-vline,
  WA_DB2_VIEW_NETSTATS_DET-SERVERTIME, sy-vline,
  WA_DB2_VIEW_NETSTATS_DET-ROUNDTRIPTIME, sy-vline,
  WA_DB2_VIEW_NETSTATS_DET-BYTESSENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB2_VIEW_NETSTATS_DET 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_DB2_VIEW_NETSTATS_DET 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_DB2_VIEW_NETSTATS_DET INTO WA_DB2_VIEW_NETSTATS_DET.


*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_DB2_VIEW_NETSTATS_DET_STR, 
NETSTATS TYPE STRING,
INTERVALEND TYPE STRING,
APPSERVER TYPE STRING,
WP TYPE STRING,
WPTYPE TYPE STRING,
INTERVALLENGTH TYPE STRING,
INVOCATIONS TYPE STRING,
SERVINVOCATIONS TYPE STRING,
SERVERTIME TYPE STRING,
ROUNDTRIPTIME TYPE STRING,
BYTESSENT TYPE STRING,
BYTESRECEIVED TYPE STRING,
ROUNDTRIPS TYPE STRING,
NETWORKTIME TYPE STRING,
AVGROUNDTIME TYPE STRING,
MINNETWORKTIME TYPE STRING,
MAXNETWORKTIME TYPE STRING,
MINMAX TYPE STRING,
MINSERVERTIME TYPE STRING,
MINNETWORKTIME TYPE STRING,
MINBYTESSENT TYPE STRING,
MINBYTESRECEIVED TYPE STRING,
MINROUNDTRIPS TYPE STRING,
MAXSERVERTIME TYPE STRING,
MAXNETWORKTIME TYPE STRING,
MAXBYTESSENT TYPE STRING,
MAXBYTESRECEIVED TYPE STRING,
MAXROUNDTRIPS TYPE STRING,
FILTER TYPE STRING,
FROM_DATE TYPE STRING,
FROM_TIME TYPE STRING,
TO_DATE TYPE STRING,
TO_TIME TYPE STRING,
APPSERVER TYPE STRING,
WPTYPE TYPE STRING,
WP TYPE STRING,
AGGR_APP TYPE STRING,
AGGR_TYPE TYPE STRING,
AGGR_WP TYPE STRING,
SAMPLES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB2_VIEW_NETSTATS_DET_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_DB2_VIEW_NETSTATS_DET_STR-NETSTATS sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-INTERVALEND sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-APPSERVER sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-WP sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-WPTYPE sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-INTERVALLENGTH sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-INVOCATIONS sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-SERVINVOCATIONS sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-SERVERTIME sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-ROUNDTRIPTIME sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-BYTESSENT sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-BYTESRECEIVED sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-ROUNDTRIPS sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-NETWORKTIME sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-AVGROUNDTIME sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-MINNETWORKTIME sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-MAXNETWORKTIME sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-MINMAX sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-MINSERVERTIME sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-MINNETWORKTIME sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-MINBYTESSENT sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-MINBYTESRECEIVED sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-MINROUNDTRIPS sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-MAXSERVERTIME sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-MAXNETWORKTIME sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-MAXBYTESSENT sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-MAXBYTESRECEIVED sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-MAXROUNDTRIPS sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-FILTER sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-FROM_DATE sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-FROM_TIME sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-TO_DATE sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-TO_TIME sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-APPSERVER sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-WPTYPE sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-WP sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-AGGR_APP sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-AGGR_TYPE sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-AGGR_WP sy-vline 
WA_DB2_VIEW_NETSTATS_DET_STR-SAMPLES sy-vline      INTO ld_text SEPARATED BY SPACE.

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