ABAP Select data from SAP table SYB_TABSTATS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SYB_TABSTATS 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_TABSTATS. 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_TABSTATS 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_TABSTATS TYPE STANDARD TABLE OF SYB_TABSTATS,
      WA_SYB_TABSTATS TYPE SYB_TABSTATS,
      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_TABSTATS> TYPE SYB_TABSTATS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SYB_TABSTATS
*  INTO TABLE @DATA(IT_SYB_TABSTATS2).
*--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_TABSTATS INDEX 1 INTO DATA(WA_SYB_TABSTATS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SYB_TABSTATS>-PGCNT = 1.
<SYB_TABSTATS>-EMPTYPGCNT = 1.
<SYB_TABSTATS>-ROWCNT = 1.
<SYB_TABSTATS>-FWDROWCNT = 1.
<SYB_TABSTATS>-DELROWCNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SYB_TABSTATS-CRCNT, sy-vline,
  WA_SYB_TABSTATS-OAMAPGCNT, sy-vline,
  WA_SYB_TABSTATS-EXTENT0PGCNT, sy-vline,
  WA_SYB_TABSTATS-DATAROWSIZE, sy-vline,
  WA_SYB_TABSTATS-JOINDEGREE, sy-vline,
  WA_SYB_TABSTATS-UNUSEDPGCNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SYB_TABSTATS 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_TABSTATS 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_TABSTATS INTO WA_SYB_TABSTATS.


*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_TABSTATS_STR, 
PGCNT TYPE STRING,
EMPTYPGCNT TYPE STRING,
ROWCNT TYPE STRING,
FWDROWCNT TYPE STRING,
DELROWCNT TYPE STRING,
CRCNT TYPE STRING,
OAMAPGCNT TYPE STRING,
EXTENT0PGCNT TYPE STRING,
DATAROWSIZE TYPE STRING,
JOINDEGREE TYPE STRING,
UNUSEDPGCNT TYPE STRING,
OAMPGCNT TYPE STRING,
CLUSTERRATIO TYPE STRING,
SPACE_UTL_PCT TYPE STRING,
LARGEIOEFF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SYB_TABSTATS_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_TABSTATS_STR-PGCNT sy-vline 
WA_SYB_TABSTATS_STR-EMPTYPGCNT sy-vline 
WA_SYB_TABSTATS_STR-ROWCNT sy-vline 
WA_SYB_TABSTATS_STR-FWDROWCNT sy-vline 
WA_SYB_TABSTATS_STR-DELROWCNT sy-vline 
WA_SYB_TABSTATS_STR-CRCNT sy-vline 
WA_SYB_TABSTATS_STR-OAMAPGCNT sy-vline 
WA_SYB_TABSTATS_STR-EXTENT0PGCNT sy-vline 
WA_SYB_TABSTATS_STR-DATAROWSIZE sy-vline 
WA_SYB_TABSTATS_STR-JOINDEGREE sy-vline 
WA_SYB_TABSTATS_STR-UNUSEDPGCNT sy-vline 
WA_SYB_TABSTATS_STR-OAMPGCNT sy-vline 
WA_SYB_TABSTATS_STR-CLUSTERRATIO sy-vline 
WA_SYB_TABSTATS_STR-SPACE_UTL_PCT sy-vline 
WA_SYB_TABSTATS_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.