ABAP Select data from SAP table GHO_V_NETOBJ_ID into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GHO_V_NETOBJ_ID
*  INTO TABLE @DATA(IT_GHO_V_NETOBJ_ID2).
*--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_GHO_V_NETOBJ_ID INDEX 1 INTO DATA(WA_GHO_V_NETOBJ_ID2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GHO_V_NETOBJ_ID>-MANDT = 1.
<GHO_V_NETOBJ_ID>-TPLNR = 1.
<GHO_V_NETOBJ_ID>-GHO_NETOBJ_TYPE = 1.
<GHO_V_NETOBJ_ID>-SPRAS = 1.
<GHO_V_NETOBJ_ID>-PLTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GHO_V_NETOBJ_ID-PLTXU, sy-vline,
  WA_GHO_V_NETOBJ_ID-GHO_RESERVOIR, sy-vline,
  WA_GHO_V_NETOBJ_ID-SYSTEM_ID, sy-vline,
  WA_GHO_V_NETOBJ_ID-GHO_MTR_TYPE, sy-vline,
  WA_GHO_V_NETOBJ_ID-GHO_EXTENAL_ID, sy-vline,
  WA_GHO_V_NETOBJ_ID-NETID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GHO_V_NETOBJ_ID 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_GHO_V_NETOBJ_ID 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_GHO_V_NETOBJ_ID INTO WA_GHO_V_NETOBJ_ID.


*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.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_GHO_V_NETOBJ_ID-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GHO_V_NETOBJ_ID-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_GHO_V_NETOBJ_ID-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GHO_V_NETOBJ_ID-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GHO_V_NETOBJ_ID-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GHO_V_NETOBJ_ID-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GHO_V_NETOBJ_ID-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GHO_V_NETOBJ_ID-ADRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field GHO_WC_REF_ID
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_GHO_V_NETOBJ_ID-GHO_WC_REF_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GHO_V_NETOBJ_ID-GHO_WC_REF_ID.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_GHO_V_NETOBJ_ID_STR, 
MANDT TYPE STRING,
TPLNR TYPE STRING,
GHO_NETOBJ_TYPE TYPE STRING,
SPRAS TYPE STRING,
PLTXT TYPE STRING,
PLTXU TYPE STRING,
GHO_RESERVOIR TYPE STRING,
SYSTEM_ID TYPE STRING,
GHO_MTR_TYPE TYPE STRING,
GHO_EXTENAL_ID TYPE STRING,
NETID TYPE STRING,
BUKRS TYPE STRING,
KOSTL TYPE STRING,
ADRNR TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
BEGRU TYPE STRING,
HERST TYPE STRING,
TYPBZ TYPE STRING,
GHO_WC_REF_ID TYPE STRING,
GHO_FIELD TYPE STRING,
GHO_SHORE_IND TYPE STRING,
GHO_CONCESSION TYPE STRING,
WELL_TYPE TYPE STRING,
GHO_PN_TZ TYPE STRING,
GHO_PN_NW_ALLOC TYPE STRING,
GHO_WC_TYPE TYPE STRING,
GHO_PUMP_TYPE TYPE STRING,
GHO_COMP_TYPE TYPE STRING,
GHO_TB_TYPE TYPE STRING,
TANK_TYPE TYPE STRING,
GHO_DEH_TYPE TYPE STRING,
GHO_PIPEMATNR TYPE STRING,
KZMLA TYPE STRING,
GHO_PLATFORM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GHO_V_NETOBJ_ID_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_GHO_V_NETOBJ_ID_STR-MANDT sy-vline 
WA_GHO_V_NETOBJ_ID_STR-TPLNR sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_NETOBJ_TYPE sy-vline 
WA_GHO_V_NETOBJ_ID_STR-SPRAS sy-vline 
WA_GHO_V_NETOBJ_ID_STR-PLTXT sy-vline 
WA_GHO_V_NETOBJ_ID_STR-PLTXU sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_RESERVOIR sy-vline 
WA_GHO_V_NETOBJ_ID_STR-SYSTEM_ID sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_MTR_TYPE sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_EXTENAL_ID sy-vline 
WA_GHO_V_NETOBJ_ID_STR-NETID sy-vline 
WA_GHO_V_NETOBJ_ID_STR-BUKRS sy-vline 
WA_GHO_V_NETOBJ_ID_STR-KOSTL sy-vline 
WA_GHO_V_NETOBJ_ID_STR-ADRNR sy-vline 
WA_GHO_V_NETOBJ_ID_STR-AENAM sy-vline 
WA_GHO_V_NETOBJ_ID_STR-AEDAT sy-vline 
WA_GHO_V_NETOBJ_ID_STR-ERNAM sy-vline 
WA_GHO_V_NETOBJ_ID_STR-ERDAT sy-vline 
WA_GHO_V_NETOBJ_ID_STR-BEGRU sy-vline 
WA_GHO_V_NETOBJ_ID_STR-HERST sy-vline 
WA_GHO_V_NETOBJ_ID_STR-TYPBZ sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_WC_REF_ID sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_FIELD sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_SHORE_IND sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_CONCESSION sy-vline 
WA_GHO_V_NETOBJ_ID_STR-WELL_TYPE sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_PN_TZ sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_PN_NW_ALLOC sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_WC_TYPE sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_PUMP_TYPE sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_COMP_TYPE sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_TB_TYPE sy-vline 
WA_GHO_V_NETOBJ_ID_STR-TANK_TYPE sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_DEH_TYPE sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_PIPEMATNR sy-vline 
WA_GHO_V_NETOBJ_ID_STR-KZMLA sy-vline 
WA_GHO_V_NETOBJ_ID_STR-GHO_PLATFORM sy-vline      INTO ld_text SEPARATED BY SPACE.

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