ABAP Select data from SAP table DB6NAVSDIS into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB6NAVSDIS 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 DB6NAVSDIS. 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 DB6NAVSDIS 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_DB6NAVSDIS TYPE STANDARD TABLE OF DB6NAVSDIS,
      WA_DB6NAVSDIS TYPE DB6NAVSDIS,
      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: <DB6NAVSDIS> TYPE DB6NAVSDIS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB6NAVSDIS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB6NAVSDIS
  INTO TABLE IT_DB6NAVSDIS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB6NAVSDIS
*  INTO TABLE @DATA(IT_DB6NAVSDIS2).
*--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_DB6NAVSDIS INDEX 1 INTO DATA(WA_DB6NAVSDIS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB6NAVSDIS ASSIGNING <DB6NAVSDIS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB6NAVSDIS>-STATUS_ICON = 1.
<DB6NAVSDIS>-SYSID = 1.
<DB6NAVSDIS>-SAPREL = 1.
<DB6NAVSDIS>-DBREL = 1.
<DB6NAVSDIS>-RFCDEST = 1.

ENDLOOP.

LOOP AT IT_DB6NAVSDIS INTO WA_DB6NAVSDIS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB6NAVSDIS-DBHOST, sy-vline,
  WA_DB6NAVSDIS-SCHEMANAME, sy-vline,
  WA_DB6NAVSDIS-ENTRYSTATE, sy-vline,
  WA_DB6NAVSDIS-ENTRYTYPE, sy-vline,
  WA_DB6NAVSDIS-DBCNAME, sy-vline,
  WA_DB6NAVSDIS-DBSYS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB6NAVSDIS 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_DB6NAVSDIS 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_DB6NAVSDIS INTO WA_DB6NAVSDIS.


*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_DB6NAVSDIS_STR, 
STATUS_ICON TYPE STRING,
SYSID TYPE STRING,
SAPREL TYPE STRING,
DBREL TYPE STRING,
RFCDEST TYPE STRING,
DBHOST TYPE STRING,
SCHEMANAME TYPE STRING,
ENTRYSTATE TYPE STRING,
ENTRYTYPE TYPE STRING,
DBCNAME TYPE STRING,
DBSYS TYPE STRING,
DB_OPSYS TYPE STRING,
COCKREL TYPE STRING,
REALSID TYPE STRING,
DBSID TYPE STRING,
RZ20_MON TYPE STRING,
HIST_MON TYPE STRING,
DESCRIPTION TYPE STRING,
CHANGEDATE TYPE STRING,
CHANGETIME TYPE STRING,
CHANGED_BY TYPE STRING,
SYSTEMTYPE TYPE STRING,
RFCDEST_2 TYPE STRING,
REMOTE_COLL TYPE STRING,
DBCON_VIA_RFC TYPE STRING,
PROMPT_USER_DATA TYPE STRING,
SLD_NAME TYPE STRING,
SLD_UPDATE TYPE STRING,
DB13C_MON TYPE STRING,
KPI_MON TYPE STRING,
LICENSE_EXT TYPE STRING,
SCHEDULER_TYPE TYPE STRING,
BACKEND_STATE TYPE STRING,
BACKEND_CHK_TIME TYPE STRING,
HIST_DBH TYPE STRING,
BACKEND_TPL_ID TYPE STRING,
LSID TYPE STRING,
AUTO_UPDATE TYPE STRING,
DBOSC_ID TYPE STRING,
DEFAULTSYS TYPE STRING,
DBSYS_IMAGE TYPE STRING,
ORALICEXTDIAG TYPE STRING,
DB_USER TYPE STRING,
LABEL_HISTMON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB6NAVSDIS_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_DB6NAVSDIS_STR-STATUS_ICON sy-vline 
WA_DB6NAVSDIS_STR-SYSID sy-vline 
WA_DB6NAVSDIS_STR-SAPREL sy-vline 
WA_DB6NAVSDIS_STR-DBREL sy-vline 
WA_DB6NAVSDIS_STR-RFCDEST sy-vline 
WA_DB6NAVSDIS_STR-DBHOST sy-vline 
WA_DB6NAVSDIS_STR-SCHEMANAME sy-vline 
WA_DB6NAVSDIS_STR-ENTRYSTATE sy-vline 
WA_DB6NAVSDIS_STR-ENTRYTYPE sy-vline 
WA_DB6NAVSDIS_STR-DBCNAME sy-vline 
WA_DB6NAVSDIS_STR-DBSYS sy-vline 
WA_DB6NAVSDIS_STR-DB_OPSYS sy-vline 
WA_DB6NAVSDIS_STR-COCKREL sy-vline 
WA_DB6NAVSDIS_STR-REALSID sy-vline 
WA_DB6NAVSDIS_STR-DBSID sy-vline 
WA_DB6NAVSDIS_STR-RZ20_MON sy-vline 
WA_DB6NAVSDIS_STR-HIST_MON sy-vline 
WA_DB6NAVSDIS_STR-DESCRIPTION sy-vline 
WA_DB6NAVSDIS_STR-CHANGEDATE sy-vline 
WA_DB6NAVSDIS_STR-CHANGETIME sy-vline 
WA_DB6NAVSDIS_STR-CHANGED_BY sy-vline 
WA_DB6NAVSDIS_STR-SYSTEMTYPE sy-vline 
WA_DB6NAVSDIS_STR-RFCDEST_2 sy-vline 
WA_DB6NAVSDIS_STR-REMOTE_COLL sy-vline 
WA_DB6NAVSDIS_STR-DBCON_VIA_RFC sy-vline 
WA_DB6NAVSDIS_STR-PROMPT_USER_DATA sy-vline 
WA_DB6NAVSDIS_STR-SLD_NAME sy-vline 
WA_DB6NAVSDIS_STR-SLD_UPDATE sy-vline 
WA_DB6NAVSDIS_STR-DB13C_MON sy-vline 
WA_DB6NAVSDIS_STR-KPI_MON sy-vline 
WA_DB6NAVSDIS_STR-LICENSE_EXT sy-vline 
WA_DB6NAVSDIS_STR-SCHEDULER_TYPE sy-vline 
WA_DB6NAVSDIS_STR-BACKEND_STATE sy-vline 
WA_DB6NAVSDIS_STR-BACKEND_CHK_TIME sy-vline 
WA_DB6NAVSDIS_STR-HIST_DBH sy-vline 
WA_DB6NAVSDIS_STR-BACKEND_TPL_ID sy-vline 
WA_DB6NAVSDIS_STR-LSID sy-vline 
WA_DB6NAVSDIS_STR-AUTO_UPDATE sy-vline 
WA_DB6NAVSDIS_STR-DBOSC_ID sy-vline 
WA_DB6NAVSDIS_STR-DEFAULTSYS sy-vline 
WA_DB6NAVSDIS_STR-DBSYS_IMAGE sy-vline 
WA_DB6NAVSDIS_STR-ORALICEXTDIAG sy-vline 
WA_DB6NAVSDIS_STR-DB_USER sy-vline 
WA_DB6NAVSDIS_STR-LABEL_HISTMON sy-vline      INTO ld_text SEPARATED BY SPACE.

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