ABAP Select data from SAP table SYB_SYSINDEXES into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SYB_SYSINDEXES 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_SYSINDEXES. 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_SYSINDEXES 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_SYSINDEXES TYPE STANDARD TABLE OF SYB_SYSINDEXES,
      WA_SYB_SYSINDEXES TYPE SYB_SYSINDEXES,
      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_SYSINDEXES> TYPE SYB_SYSINDEXES.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SYB_SYSINDEXES
*  INTO TABLE @DATA(IT_SYB_SYSINDEXES2).
*--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_SYSINDEXES INDEX 1 INTO DATA(WA_SYB_SYSINDEXES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SYB_SYSINDEXES>-NAME = 1.
<SYB_SYSINDEXES>-ID = 1.
<SYB_SYSINDEXES>-INDID = 1.
<SYB_SYSINDEXES>-IPGTRIPS = 1.
<SYB_SYSINDEXES>-SEGMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SYB_SYSINDEXES-MAXROWSPERPAGE, sy-vline,
  WA_SYB_SYSINDEXES-MINLEN, sy-vline,
  WA_SYB_SYSINDEXES-MAXLEN, sy-vline,
  WA_SYB_SYSINDEXES-MAXIROW, sy-vline,
  WA_SYB_SYSINDEXES-KEYCNT, sy-vline,
  WA_SYB_SYSINDEXES-SOID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SYB_SYSINDEXES 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_SYSINDEXES 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_SYSINDEXES INTO WA_SYB_SYSINDEXES.


*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_SYSINDEXES_STR, 
NAME TYPE STRING,
ID TYPE STRING,
INDID TYPE STRING,
IPGTRIPS TYPE STRING,
SEGMENT TYPE STRING,
MAXROWSPERPAGE TYPE STRING,
MINLEN TYPE STRING,
MAXLEN TYPE STRING,
MAXIROW TYPE STRING,
KEYCNT TYPE STRING,
SOID TYPE STRING,
CSID TYPE STRING,
FILL_FACTOR TYPE STRING,
RES_PAGE_GAP TYPE STRING,
EXP_ROWSIZE TYPE STRING,
CRDATE TYPE STRING,
PARTITIONTYPE TYPE STRING,
CONDITIONID TYPE STRING,
IX_UNIQUE TYPE STRING,
IX_SORTEDDATA TYPE STRING,
IX_ISPRKEY TYPE STRING,
LARGEIO_ENABLED TYPE STRING,
MRU_ENABLED TYPE STRING,
IX_ISSUSPECT TYPE STRING,
IS_CLUSTERED TYPE STRING,
IX_TYPE TYPE STRING,
INDEX_COMPRESSION TYPE STRING,
CACHE_BOUND_TO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SYB_SYSINDEXES_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_SYSINDEXES_STR-NAME sy-vline 
WA_SYB_SYSINDEXES_STR-ID sy-vline 
WA_SYB_SYSINDEXES_STR-INDID sy-vline 
WA_SYB_SYSINDEXES_STR-IPGTRIPS sy-vline 
WA_SYB_SYSINDEXES_STR-SEGMENT sy-vline 
WA_SYB_SYSINDEXES_STR-MAXROWSPERPAGE sy-vline 
WA_SYB_SYSINDEXES_STR-MINLEN sy-vline 
WA_SYB_SYSINDEXES_STR-MAXLEN sy-vline 
WA_SYB_SYSINDEXES_STR-MAXIROW sy-vline 
WA_SYB_SYSINDEXES_STR-KEYCNT sy-vline 
WA_SYB_SYSINDEXES_STR-SOID sy-vline 
WA_SYB_SYSINDEXES_STR-CSID sy-vline 
WA_SYB_SYSINDEXES_STR-FILL_FACTOR sy-vline 
WA_SYB_SYSINDEXES_STR-RES_PAGE_GAP sy-vline 
WA_SYB_SYSINDEXES_STR-EXP_ROWSIZE sy-vline 
WA_SYB_SYSINDEXES_STR-CRDATE sy-vline 
WA_SYB_SYSINDEXES_STR-PARTITIONTYPE sy-vline 
WA_SYB_SYSINDEXES_STR-CONDITIONID sy-vline 
WA_SYB_SYSINDEXES_STR-IX_UNIQUE sy-vline 
WA_SYB_SYSINDEXES_STR-IX_SORTEDDATA sy-vline 
WA_SYB_SYSINDEXES_STR-IX_ISPRKEY sy-vline 
WA_SYB_SYSINDEXES_STR-LARGEIO_ENABLED sy-vline 
WA_SYB_SYSINDEXES_STR-MRU_ENABLED sy-vline 
WA_SYB_SYSINDEXES_STR-IX_ISSUSPECT sy-vline 
WA_SYB_SYSINDEXES_STR-IS_CLUSTERED sy-vline 
WA_SYB_SYSINDEXES_STR-IX_TYPE sy-vline 
WA_SYB_SYSINDEXES_STR-INDEX_COMPRESSION sy-vline 
WA_SYB_SYSINDEXES_STR-CACHE_BOUND_TO sy-vline      INTO ld_text SEPARATED BY SPACE.

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