ABAP Select data from SAP table GMSTATNET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GMSTATNET
*  INTO TABLE @DATA(IT_GMSTATNET2).
*--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_GMSTATNET INDEX 1 INTO DATA(WA_GMSTATNET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GMSTATNET>-CLIENT = 1.
<GMSTATNET>-GRANT_TYPE = 1.
<GMSTATNET>-STATUS_PROFILE = 1.
<GMSTATNET>-LIFECYCLE_STATUS = 1.
<GMSTATNET>-USER_STATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GMSTATNET-PREVIOUS_STATE1, sy-vline,
  WA_GMSTATNET-PREVIOUS_STATE2, sy-vline,
  WA_GMSTATNET-PREVIOUS_STATE3, sy-vline,
  WA_GMSTATNET-PREVIOUS_STATE4, sy-vline,
  WA_GMSTATNET-PREVIOUS_STATE5, sy-vline,
  WA_GMSTATNET-PREVIOUS_STATE6, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GMSTATNET 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_GMSTATNET 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_GMSTATNET INTO WA_GMSTATNET.


*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_GMSTATNET_STR, 
CLIENT TYPE STRING,
GRANT_TYPE TYPE STRING,
STATUS_PROFILE TYPE STRING,
LIFECYCLE_STATUS TYPE STRING,
USER_STATUS TYPE STRING,
PREVIOUS_STATE1 TYPE STRING,
PREVIOUS_STATE2 TYPE STRING,
PREVIOUS_STATE3 TYPE STRING,
PREVIOUS_STATE4 TYPE STRING,
PREVIOUS_STATE5 TYPE STRING,
PREVIOUS_STATE6 TYPE STRING,
END_STATE TYPE STRING,
INITIAL_STATE TYPE STRING,
AUTH_GROUP TYPE STRING,
WORKFLOWTASK TYPE STRING,
ICON_NAME TYPE STRING,
ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GMSTATNET_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_GMSTATNET_STR-CLIENT sy-vline 
WA_GMSTATNET_STR-GRANT_TYPE sy-vline 
WA_GMSTATNET_STR-STATUS_PROFILE sy-vline 
WA_GMSTATNET_STR-LIFECYCLE_STATUS sy-vline 
WA_GMSTATNET_STR-USER_STATUS sy-vline 
WA_GMSTATNET_STR-PREVIOUS_STATE1 sy-vline 
WA_GMSTATNET_STR-PREVIOUS_STATE2 sy-vline 
WA_GMSTATNET_STR-PREVIOUS_STATE3 sy-vline 
WA_GMSTATNET_STR-PREVIOUS_STATE4 sy-vline 
WA_GMSTATNET_STR-PREVIOUS_STATE5 sy-vline 
WA_GMSTATNET_STR-PREVIOUS_STATE6 sy-vline 
WA_GMSTATNET_STR-END_STATE sy-vline 
WA_GMSTATNET_STR-INITIAL_STATE sy-vline 
WA_GMSTATNET_STR-AUTH_GROUP sy-vline 
WA_GMSTATNET_STR-WORKFLOWTASK sy-vline 
WA_GMSTATNET_STR-ICON_NAME sy-vline 
WA_GMSTATNET_STR-ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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