ABAP Select data from SAP table INFDBSPACE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM INFDBSPACE
*  INTO TABLE @DATA(IT_INFDBSPACE2).
*--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_INFDBSPACE INDEX 1 INTO DATA(WA_INFDBSPACE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<INFDBSPACE>-DBSNAME = 1.
<INFDBSPACE>-DBSNUM = 1.
<INFDBSPACE>-TOTAL1 = 1.
<INFDBSPACE>-FREE = 1.
<INFDBSPACE>-PCTUSED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_INFDBSPACE-TABLES, sy-vline,
  WA_INFDBSPACE-TOTAL2, sy-vline,
  WA_INFDBSPACE-USED, sy-vline,
  WA_INFDBSPACE-INDEXES, sy-vline,
  WA_INFDBSPACE-NEXTNS, sy-vline,
  WA_INFDBSPACE-MINEXTENTS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_INFDBSPACE 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_INFDBSPACE 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_INFDBSPACE INTO WA_INFDBSPACE.


*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_INFDBSPACE_STR, 
DBSNAME TYPE STRING,
DBSNUM TYPE STRING,
TOTAL1 TYPE STRING,
FREE TYPE STRING,
PCTUSED TYPE STRING,
TABLES TYPE STRING,
TOTAL2 TYPE STRING,
USED TYPE STRING,
INDEXES TYPE STRING,
NEXTNS TYPE STRING,
MINEXTENTS TYPE STRING,
MAXEXTENTS TYPE STRING,
NEXTEXTENT TYPE STRING,
INITEXTENT TYPE STRING,
CHK_ONLINE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_INFDBSPACE_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_INFDBSPACE_STR-DBSNAME sy-vline 
WA_INFDBSPACE_STR-DBSNUM sy-vline 
WA_INFDBSPACE_STR-TOTAL1 sy-vline 
WA_INFDBSPACE_STR-FREE sy-vline 
WA_INFDBSPACE_STR-PCTUSED sy-vline 
WA_INFDBSPACE_STR-TABLES sy-vline 
WA_INFDBSPACE_STR-TOTAL2 sy-vline 
WA_INFDBSPACE_STR-USED sy-vline 
WA_INFDBSPACE_STR-INDEXES sy-vline 
WA_INFDBSPACE_STR-NEXTNS sy-vline 
WA_INFDBSPACE_STR-MINEXTENTS sy-vline 
WA_INFDBSPACE_STR-MAXEXTENTS sy-vline 
WA_INFDBSPACE_STR-NEXTEXTENT sy-vline 
WA_INFDBSPACE_STR-INITEXTENT sy-vline 
WA_INFDBSPACE_STR-CHK_ONLINE sy-vline      INTO ld_text SEPARATED BY SPACE.

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