ABAP Select data from SAP table SLOC_SUBSTN_S_NTWRK_GRAPH_RES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SLOC_SUBSTN_S_NTWRK_GRAPH_RES
*  INTO TABLE @DATA(IT_SLOC_SUBSTN_S_NTWRK_GRAPH_RES2).
*--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_SLOC_SUBSTN_S_NTWRK_GRAPH_RES INDEX 1 INTO DATA(WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SLOC_SUBSTN_S_NTWRK_GRAPH_RES>-MDSUBSTNMASTERUUID = 1.
<SLOC_SUBSTN_S_NTWRK_GRAPH_RES>-MDSUBSTNUUID = 1.
<SLOC_SUBSTN_S_NTWRK_GRAPH_RES>-MDSUBSTNOBJECTTYPE = 1.
<SLOC_SUBSTN_S_NTWRK_GRAPH_RES>-STORAGELOCATION = 1.
<SLOC_SUBSTN_S_NTWRK_GRAPH_RES>-SUBSTITUTESTORAGELOCATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES-MDSUBSTNCONTEXTOBJECTTYPE, sy-vline,
  WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES-PLANT, sy-vline,
  WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES-MDSUBSTNCONTEXTOBJECTTYPE2, sy-vline,
  WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES-MDSUBSTNGROUP, sy-vline,
  WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES-MDSUBSTNVERSIONVALUE, sy-vline,
  WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES-MDSUBSTNSET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES 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_SLOC_SUBSTN_S_NTWRK_GRAPH_RES 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_SLOC_SUBSTN_S_NTWRK_GRAPH_RES INTO WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES.


*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_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR, 
MDSUBSTNMASTERUUID TYPE STRING,
MDSUBSTNUUID TYPE STRING,
MDSUBSTNOBJECTTYPE TYPE STRING,
STORAGELOCATION TYPE STRING,
SUBSTITUTESTORAGELOCATION TYPE STRING,
MDSUBSTNCONTEXTOBJECTTYPE TYPE STRING,
PLANT TYPE STRING,
MDSUBSTNCONTEXTOBJECTTYPE2 TYPE STRING,
MDSUBSTNGROUP TYPE STRING,
MDSUBSTNVERSIONVALUE TYPE STRING,
MDSUBSTNSET TYPE STRING,
MDSUBSTNISEXIT TYPE STRING,
MDSUBSTNISLEADING TYPE STRING,
MDSUBSTNSEQUENCEVALUE TYPE STRING,
MDSUBSTNCONVERSIONNUMERATOR TYPE STRING,
MDSUBSTNCONVERSIONDENOMINATOR TYPE STRING,
MDSUBSTNCONVERSIONPERCENT TYPE STRING,
MDSUBSTNVALIDITYSTARTDATETIME TYPE STRING,
MDSUBSTNVALIDITYENDDATETIME TYPE STRING,
TIMEZONEID TYPE STRING,
MDSUBSTNREASON TYPE STRING,
MDSUBSTNSTATUS TYPE STRING,
MDSUBSTNISRLVTFORATPSTORAGELOC TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
SUBS_EXCLSN_STATUS TYPE STRING,
MDSUBSTNVALIDITYSTARTDATE TYPE STRING,
MDSUBSTNVALIDITYSTARTTIME TYPE STRING,
MDSUBSTNVALIDITYENDDATE TYPE STRING,
MDSUBSTNVALIDITYENDTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_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_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNMASTERUUID sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNUUID sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNOBJECTTYPE sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-STORAGELOCATION sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-SUBSTITUTESTORAGELOCATION sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNCONTEXTOBJECTTYPE sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-PLANT sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNCONTEXTOBJECTTYPE2 sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNGROUP sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNVERSIONVALUE sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNSET sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNISEXIT sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNISLEADING sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNSEQUENCEVALUE sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNCONVERSIONNUMERATOR sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNCONVERSIONDENOMINATOR sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNCONVERSIONPERCENT sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNVALIDITYSTARTDATETIME sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNVALIDITYENDDATETIME sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-TIMEZONEID sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNREASON sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNSTATUS sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNISRLVTFORATPSTORAGELOC sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-CREATEDBYUSER sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-CREATIONDATETIME sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-LASTCHANGEDBYUSER sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-LASTCHANGEDATETIME sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-SUBS_EXCLSN_STATUS sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNVALIDITYSTARTDATE sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNVALIDITYSTARTTIME sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNVALIDITYENDDATE sy-vline 
WA_SLOC_SUBSTN_S_NTWRK_GRAPH_RES_STR-MDSUBSTNVALIDITYENDTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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