ABAP Select data from SAP table DB6TSPACE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB6TSPACE 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 DB6TSPACE. 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 DB6TSPACE 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_DB6TSPACE TYPE STANDARD TABLE OF DB6TSPACE,
      WA_DB6TSPACE TYPE DB6TSPACE,
      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: <DB6TSPACE> TYPE DB6TSPACE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB6TSPACE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB6TSPACE
  INTO TABLE IT_DB6TSPACE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB6TSPACE
*  INTO TABLE @DATA(IT_DB6TSPACE2).
*--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_DB6TSPACE INDEX 1 INTO DATA(WA_DB6TSPACE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB6TSPACE ASSIGNING <DB6TSPACE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB6TSPACE>-DB6TBSID = 1.
<DB6TSPACE>-DB6TBSNAME = 1.
<DB6TSPACE>-DB6TBSTYPE = 1.
<DB6TSPACE>-DB6TBSCONT = 1.
<DB6TSPACE>-DB6TBSTPGS = 1.

ENDLOOP.

LOOP AT IT_DB6TSPACE INTO WA_DB6TSPACE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB6TSPACE-DB6TBSUPGS, sy-vline,
  WA_DB6TSPACE-DB6TBSPGSZ, sy-vline,
  WA_DB6TSPACE-DB6TBSEXSZ, sy-vline,
  WA_DB6TSPACE-DB6TBSPFSZ, sy-vline,
  WA_DB6TSPACE-DB6TBSNCON, sy-vline,
  WA_DB6TSPACE-DB6TBSCUSZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB6TSPACE 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_DB6TSPACE 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_DB6TSPACE INTO WA_DB6TSPACE.


*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_DB6TSPACE_STR, 
DB6TBSID TYPE STRING,
DB6TBSNAME TYPE STRING,
DB6TBSTYPE TYPE STRING,
DB6TBSCONT TYPE STRING,
DB6TBSTPGS TYPE STRING,
DB6TBSUPGS TYPE STRING,
DB6TBSPGSZ TYPE STRING,
DB6TBSEXSZ TYPE STRING,
DB6TBSPFSZ TYPE STRING,
DB6TBSNCON TYPE STRING,
DB6TBSCUSZ TYPE STRING,
DB6TBSFRSP TYPE STRING,
DB6TBSHWM TYPE STRING,
DB6TBSSTAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB6TSPACE_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_DB6TSPACE_STR-DB6TBSID sy-vline 
WA_DB6TSPACE_STR-DB6TBSNAME sy-vline 
WA_DB6TSPACE_STR-DB6TBSTYPE sy-vline 
WA_DB6TSPACE_STR-DB6TBSCONT sy-vline 
WA_DB6TSPACE_STR-DB6TBSTPGS sy-vline 
WA_DB6TSPACE_STR-DB6TBSUPGS sy-vline 
WA_DB6TSPACE_STR-DB6TBSPGSZ sy-vline 
WA_DB6TSPACE_STR-DB6TBSEXSZ sy-vline 
WA_DB6TSPACE_STR-DB6TBSPFSZ sy-vline 
WA_DB6TSPACE_STR-DB6TBSNCON sy-vline 
WA_DB6TSPACE_STR-DB6TBSCUSZ sy-vline 
WA_DB6TSPACE_STR-DB6TBSFRSP sy-vline 
WA_DB6TSPACE_STR-DB6TBSHWM sy-vline 
WA_DB6TSPACE_STR-DB6TBSSTAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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