ABAP Select data from SAP table SERVER_QUOTAS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SERVER_QUOTAS
*  INTO TABLE @DATA(IT_SERVER_QUOTAS2).
*--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_SERVER_QUOTAS INDEX 1 INTO DATA(WA_SERVER_QUOTAS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SERVER_QUOTAS>-NAME = 1.
<SERVER_QUOTAS>-HOST = 1.
<SERVER_QUOTAS>-SERV = 1.
<SERVER_QUOTAS>-MSGTYPES = 1.
<SERVER_QUOTAS>-HOSTADR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SERVER_QUOTAS-SERVNO, sy-vline,
  WA_SERVER_QUOTAS-STATE, sy-vline,
  WA_SERVER_QUOTAS-STATUS, sy-vline,
  WA_SERVER_QUOTAS-NOREQ, sy-vline,
  WA_SERVER_QUOTAS-MAXREQ, sy-vline,
  WA_SERVER_QUOTAS-REASON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SERVER_QUOTAS 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_SERVER_QUOTAS 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_SERVER_QUOTAS INTO WA_SERVER_QUOTAS.


*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_SERVER_QUOTAS_STR, 
NAME TYPE STRING,
HOST TYPE STRING,
SERV TYPE STRING,
MSGTYPES TYPE STRING,
HOSTADR TYPE STRING,
SERVNO TYPE STRING,
STATE TYPE STRING,
STATUS TYPE STRING,
NOREQ TYPE STRING,
MAXREQ TYPE STRING,
REASON TYPE STRING,
CREASON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SERVER_QUOTAS_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_SERVER_QUOTAS_STR-NAME sy-vline 
WA_SERVER_QUOTAS_STR-HOST sy-vline 
WA_SERVER_QUOTAS_STR-SERV sy-vline 
WA_SERVER_QUOTAS_STR-MSGTYPES sy-vline 
WA_SERVER_QUOTAS_STR-HOSTADR sy-vline 
WA_SERVER_QUOTAS_STR-SERVNO sy-vline 
WA_SERVER_QUOTAS_STR-STATE sy-vline 
WA_SERVER_QUOTAS_STR-STATUS sy-vline 
WA_SERVER_QUOTAS_STR-NOREQ sy-vline 
WA_SERVER_QUOTAS_STR-MAXREQ sy-vline 
WA_SERVER_QUOTAS_STR-REASON sy-vline 
WA_SERVER_QUOTAS_STR-CREASON sy-vline      INTO ld_text SEPARATED BY SPACE.

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