ABAP Select data from SAP table SYB_INDSTATS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SYB_INDSTATS
*  INTO TABLE @DATA(IT_SYB_INDSTATS2).
*--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_SYB_INDSTATS INDEX 1 INTO DATA(WA_SYB_INDSTATS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SYB_INDSTATS>-INDEX_NAME = 1.
<SYB_INDSTATS>-LEAFCNT = 1.
<SYB_INDSTATS>-EMPTYLEAFCNT = 1.
<SYB_INDSTATS>-CRCNT = 1.
<SYB_INDSTATS>-IPAGECRCNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SYB_INDSTATS-DROWCRCNT, sy-vline,
  WA_SYB_INDSTATS-EXTENT0LEAFCNT, sy-vline,
  WA_SYB_INDSTATS-LEAFROWSIZE, sy-vline,
  WA_SYB_INDSTATS-INDEXHEIGHT, sy-vline,
  WA_SYB_INDSTATS-CLUSTERRATIO, sy-vline,
  WA_SYB_INDSTATS-INDCLUSTERRATIO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SYB_INDSTATS 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_SYB_INDSTATS 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_SYB_INDSTATS INTO WA_SYB_INDSTATS.


*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_SYB_INDSTATS_STR, 
INDEX_NAME TYPE STRING,
LEAFCNT TYPE STRING,
EMPTYLEAFCNT TYPE STRING,
CRCNT TYPE STRING,
IPAGECRCNT TYPE STRING,
DROWCRCNT TYPE STRING,
EXTENT0LEAFCNT TYPE STRING,
LEAFROWSIZE TYPE STRING,
INDEXHEIGHT TYPE STRING,
CLUSTERRATIO TYPE STRING,
INDCLUSTERRATIO TYPE STRING,
DATACLUSTERRATIO TYPE STRING,
SPACE_UTL_PCT TYPE STRING,
LARGEIOEFF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SYB_INDSTATS_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_SYB_INDSTATS_STR-INDEX_NAME sy-vline 
WA_SYB_INDSTATS_STR-LEAFCNT sy-vline 
WA_SYB_INDSTATS_STR-EMPTYLEAFCNT sy-vline 
WA_SYB_INDSTATS_STR-CRCNT sy-vline 
WA_SYB_INDSTATS_STR-IPAGECRCNT sy-vline 
WA_SYB_INDSTATS_STR-DROWCRCNT sy-vline 
WA_SYB_INDSTATS_STR-EXTENT0LEAFCNT sy-vline 
WA_SYB_INDSTATS_STR-LEAFROWSIZE sy-vline 
WA_SYB_INDSTATS_STR-INDEXHEIGHT sy-vline 
WA_SYB_INDSTATS_STR-CLUSTERRATIO sy-vline 
WA_SYB_INDSTATS_STR-INDCLUSTERRATIO sy-vline 
WA_SYB_INDSTATS_STR-DATACLUSTERRATIO sy-vline 
WA_SYB_INDSTATS_STR-SPACE_UTL_PCT sy-vline 
WA_SYB_INDSTATS_STR-LARGEIOEFF sy-vline      INTO ld_text SEPARATED BY SPACE.

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