ABAP Select data from SAP table /SDF/DB6_XPLINDX_N into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SDF/DB6_XPLINDX_N 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 /SDF/DB6_XPLINDX_N. 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 /SDF/DB6_XPLINDX_N 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_/SDF/DB6_XPLINDX_N TYPE STANDARD TABLE OF /SDF/DB6_XPLINDX_N,
      WA_/SDF/DB6_XPLINDX_N TYPE /SDF/DB6_XPLINDX_N,
      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: </SDF/DB6_XPLINDX_N> TYPE /SDF/DB6_XPLINDX_N.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SDF/DB6_XPLINDX_N.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SDF/DB6_XPLINDX_N
  INTO TABLE IT_/SDF/DB6_XPLINDX_N.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SDF/DB6_XPLINDX_N
*  INTO TABLE @DATA(IT_/SDF/DB6_XPLINDX_N2).
*--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_/SDF/DB6_XPLINDX_N INDEX 1 INTO DATA(WA_/SDF/DB6_XPLINDX_N2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SDF/DB6_XPLINDX_N ASSIGNING </SDF/DB6_XPLINDX_N>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SDF/DB6_XPLINDX_N>-INDSCHEMA = 1.
</SDF/DB6_XPLINDX_N>-INDNAME = 1.
</SDF/DB6_XPLINDX_N>-TABSCHEMA = 1.
</SDF/DB6_XPLINDX_N>-TABNAME = 1.
</SDF/DB6_XPLINDX_N>-UNIQUERULE = 1.

ENDLOOP.

LOOP AT IT_/SDF/DB6_XPLINDX_N INTO WA_/SDF/DB6_XPLINDX_N.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SDF/DB6_XPLINDX_N-COLCOUNT, sy-vline,
  WA_/SDF/DB6_XPLINDX_N-NLEAF, sy-vline,
  WA_/SDF/DB6_XPLINDX_N-NLEVELS, sy-vline,
  WA_/SDF/DB6_XPLINDX_N-FRSTKCARD, sy-vline,
  WA_/SDF/DB6_XPLINDX_N-FRST2KCARD, sy-vline,
  WA_/SDF/DB6_XPLINDX_N-FRST3KCARD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SDF/DB6_XPLINDX_N 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_/SDF/DB6_XPLINDX_N 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_/SDF/DB6_XPLINDX_N INTO WA_/SDF/DB6_XPLINDX_N.


*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_/SDF/DB6_XPLINDX_N_STR, 
INDSCHEMA TYPE STRING,
INDNAME TYPE STRING,
TABSCHEMA TYPE STRING,
TABNAME TYPE STRING,
UNIQUERULE TYPE STRING,
COLCOUNT TYPE STRING,
NLEAF TYPE STRING,
NLEVELS TYPE STRING,
FRSTKCARD TYPE STRING,
FRST2KCARD TYPE STRING,
FRST3KCARD TYPE STRING,
FRST4KCARD TYPE STRING,
FULLKCARD TYPE STRING,
CLSTRRATIO TYPE STRING,
CLSTRFACTR TYPE STRING,
CREA_TIME TYPE STRING,
STATS_TIME TYPE STRING,
STMT_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SDF/DB6_XPLINDX_N_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_/SDF/DB6_XPLINDX_N_STR-INDSCHEMA sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-INDNAME sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-TABSCHEMA sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-TABNAME sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-UNIQUERULE sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-COLCOUNT sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-NLEAF sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-NLEVELS sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-FRSTKCARD sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-FRST2KCARD sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-FRST3KCARD sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-FRST4KCARD sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-FULLKCARD sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-CLSTRRATIO sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-CLSTRFACTR sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-CREA_TIME sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-STATS_TIME sy-vline 
WA_/SDF/DB6_XPLINDX_N_STR-STMT_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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