ABAP Select data from SAP table DB2_RECOM_RUNSTATS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB2_RECOM_RUNSTATS 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_RECOM_RUNSTATS. 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_RECOM_RUNSTATS 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_RECOM_RUNSTATS TYPE STANDARD TABLE OF DB2_RECOM_RUNSTATS,
      WA_DB2_RECOM_RUNSTATS TYPE DB2_RECOM_RUNSTATS,
      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_RECOM_RUNSTATS> TYPE DB2_RECOM_RUNSTATS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB2_RECOM_RUNSTATS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB2_RECOM_RUNSTATS
  INTO TABLE IT_DB2_RECOM_RUNSTATS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB2_RECOM_RUNSTATS
*  INTO TABLE @DATA(IT_DB2_RECOM_RUNSTATS2).
*--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_RECOM_RUNSTATS INDEX 1 INTO DATA(WA_DB2_RECOM_RUNSTATS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB2_RECOM_RUNSTATS ASSIGNING <DB2_RECOM_RUNSTATS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB2_RECOM_RUNSTATS>-EXCLUDED = 1.
<DB2_RECOM_RUNSTATS>-DATE_ANA = 1.
<DB2_RECOM_RUNSTATS>-TIME_ANA = 1.
<DB2_RECOM_RUNSTATS>-DBNAME = 1.
<DB2_RECOM_RUNSTATS>-TSNAME = 1.

ENDLOOP.

LOOP AT IT_DB2_RECOM_RUNSTATS INTO WA_DB2_RECOM_RUNSTATS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB2_RECOM_RUNSTATS-PARTI, sy-vline,
  WA_DB2_RECOM_RUNSTATS-CREATOR, sy-vline,
  WA_DB2_RECOM_RUNSTATS-IXNAME, sy-vline,
  WA_DB2_RECOM_RUNSTATS-OBJTYPE, sy-vline,
  WA_DB2_RECOM_RUNSTATS-OBJSTATUS, sy-vline,
  WA_DB2_RECOM_RUNSTATS-RUNSTREC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB2_RECOM_RUNSTATS 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_RECOM_RUNSTATS 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_RECOM_RUNSTATS INTO WA_DB2_RECOM_RUNSTATS.


*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_RECOM_RUNSTATS_STR, 
EXCLUDED TYPE STRING,
DATE_ANA TYPE STRING,
TIME_ANA TYPE STRING,
DBNAME TYPE STRING,
TSNAME TYPE STRING,
PARTI TYPE STRING,
CREATOR TYPE STRING,
IXNAME TYPE STRING,
OBJTYPE TYPE STRING,
OBJSTATUS TYPE STRING,
RUNSTREC TYPE STRING,
EXCTABLE TYPE STRING,
ASSOCTS TYPE STRING,
RUNSTATSTI TYPE STRING,
STINSDELP TYPE STRING,
STINSDELA TYPE STRING,
STMASSDEL TYPE STRING,
SIINSDELP TYPE STRING,
SIINSDELA TYPE STRING,
SIMASSDEL TYPE STRING,
REORGTIME TYPE STRING,
LOADREPLTI TYPE STRING,
REBUILDTIM TYPE STRING,
EXTENT_NO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB2_RECOM_RUNSTATS_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_RECOM_RUNSTATS_STR-EXCLUDED sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-DATE_ANA sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-TIME_ANA sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-DBNAME sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-TSNAME sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-PARTI sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-CREATOR sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-IXNAME sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-OBJTYPE sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-OBJSTATUS sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-RUNSTREC sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-EXCTABLE sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-ASSOCTS sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-RUNSTATSTI sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-STINSDELP sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-STINSDELA sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-STMASSDEL sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-SIINSDELP sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-SIINSDELA sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-SIMASSDEL sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-REORGTIME sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-LOADREPLTI sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-REBUILDTIM sy-vline 
WA_DB2_RECOM_RUNSTATS_STR-EXTENT_NO sy-vline      INTO ld_text SEPARATED BY SPACE.

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