ABAP Select data from SAP table DBA_DB13C_SYSTEM_DETAIL into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP DBA_DB13C_SYSTEM_DETAIL 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 DBA_DB13C_SYSTEM_DETAIL. 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 DBA_DB13C_SYSTEM_DETAIL 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_DBA_DB13C_SYSTEM_DETAIL TYPE STANDARD TABLE OF DBA_DB13C_SYSTEM_DETAIL,
      WA_DBA_DB13C_SYSTEM_DETAIL TYPE DBA_DB13C_SYSTEM_DETAIL,
      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: <DBA_DB13C_SYSTEM_DETAIL> TYPE DBA_DB13C_SYSTEM_DETAIL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DBA_DB13C_SYSTEM_DETAIL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DBA_DB13C_SYSTEM_DETAIL
  INTO TABLE IT_DBA_DB13C_SYSTEM_DETAIL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DBA_DB13C_SYSTEM_DETAIL
*  INTO TABLE @DATA(IT_DBA_DB13C_SYSTEM_DETAIL2).
*--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_DBA_DB13C_SYSTEM_DETAIL INDEX 1 INTO DATA(WA_DBA_DB13C_SYSTEM_DETAIL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DBA_DB13C_SYSTEM_DETAIL ASSIGNING <DBA_DB13C_SYSTEM_DETAIL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DBA_DB13C_SYSTEM_DETAIL>-SYSID = 1.
<DBA_DB13C_SYSTEM_DETAIL>-TOTAL = 1.
<DBA_DB13C_SYSTEM_DETAIL>-HIGHEST_RC = 1.
<DBA_DB13C_SYSTEM_DETAIL>-GONE = 1.
<DBA_DB13C_SYSTEM_DETAIL>-SCHEDULED = 1.

ENDLOOP.

LOOP AT IT_DBA_DB13C_SYSTEM_DETAIL INTO WA_DBA_DB13C_SYSTEM_DETAIL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DBA_DB13C_SYSTEM_DETAIL-RUNNING, sy-vline,
  WA_DBA_DB13C_SYSTEM_DETAIL-FINISHED, sy-vline,
  WA_DBA_DB13C_SYSTEM_DETAIL-WARNING, sy-vline,
  WA_DBA_DB13C_SYSTEM_DETAIL-ERROR, sy-vline,
  WA_DBA_DB13C_SYSTEM_DETAIL-OVERDUE, sy-vline,
  WA_DBA_DB13C_SYSTEM_DETAIL-UNDEFINED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DBA_DB13C_SYSTEM_DETAIL 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_DBA_DB13C_SYSTEM_DETAIL 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_DBA_DB13C_SYSTEM_DETAIL INTO WA_DBA_DB13C_SYSTEM_DETAIL.


*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_DBA_DB13C_SYSTEM_DETAIL_STR, 
SYSID TYPE STRING,
TOTAL TYPE STRING,
HIGHEST_RC TYPE STRING,
GONE TYPE STRING,
SCHEDULED TYPE STRING,
RUNNING TYPE STRING,
FINISHED TYPE STRING,
WARNING TYPE STRING,
ERROR TYPE STRING,
OVERDUE TYPE STRING,
UNDEFINED TYPE STRING,
DBSYS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DBA_DB13C_SYSTEM_DETAIL_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_DBA_DB13C_SYSTEM_DETAIL_STR-SYSID sy-vline 
WA_DBA_DB13C_SYSTEM_DETAIL_STR-TOTAL sy-vline 
WA_DBA_DB13C_SYSTEM_DETAIL_STR-HIGHEST_RC sy-vline 
WA_DBA_DB13C_SYSTEM_DETAIL_STR-GONE sy-vline 
WA_DBA_DB13C_SYSTEM_DETAIL_STR-SCHEDULED sy-vline 
WA_DBA_DB13C_SYSTEM_DETAIL_STR-RUNNING sy-vline 
WA_DBA_DB13C_SYSTEM_DETAIL_STR-FINISHED sy-vline 
WA_DBA_DB13C_SYSTEM_DETAIL_STR-WARNING sy-vline 
WA_DBA_DB13C_SYSTEM_DETAIL_STR-ERROR sy-vline 
WA_DBA_DB13C_SYSTEM_DETAIL_STR-OVERDUE sy-vline 
WA_DBA_DB13C_SYSTEM_DETAIL_STR-UNDEFINED sy-vline 
WA_DBA_DB13C_SYSTEM_DETAIL_STR-DBSYS sy-vline      INTO ld_text SEPARATED BY SPACE.

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