ABAP Select data from SAP table DBA_DBH_DATACOLLECTOR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DBA_DBH_DATACOLLECTOR 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_DBH_DATACOLLECTOR. 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_DBH_DATACOLLECTOR 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_DBH_DATACOLLECTOR TYPE STANDARD TABLE OF DBA_DBH_DATACOLLECTOR,
      WA_DBA_DBH_DATACOLLECTOR TYPE DBA_DBH_DATACOLLECTOR,
      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_DBH_DATACOLLECTOR> TYPE DBA_DBH_DATACOLLECTOR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DBA_DBH_DATACOLLECTOR
*  INTO TABLE @DATA(IT_DBA_DBH_DATACOLLECTOR2).
*--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_DBH_DATACOLLECTOR INDEX 1 INTO DATA(WA_DBA_DBH_DATACOLLECTOR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DBA_DBH_DATACOLLECTOR>-CLASS = 1.
<DBA_DBH_DATACOLLECTOR>-DBREL = 1.
<DBA_DBH_DATACOLLECTOR>-DBMAX = 1.
<DBA_DBH_DATACOLLECTOR>-DATA_COLLECTOR = 1.
<DBA_DBH_DATACOLLECTOR>-DATA_COLLECTOR_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DBA_DBH_DATACOLLECTOR-DATA_COLLECTOR_SET_UP, sy-vline,
  WA_DBA_DBH_DATACOLLECTOR-DATA_COLLECTOR_SET_UP_ICON, sy-vline,
  WA_DBA_DBH_DATACOLLECTOR-DATA_COLLECTOR_REPAIR_REQUIRED, sy-vline,
  WA_DBA_DBH_DATACOLLECTOR-HAS_DBCOLLECTOR, sy-vline,
  WA_DBA_DBH_DATACOLLECTOR-DBCOLLECTOR_ACTIVE, sy-vline,
  WA_DBA_DBH_DATACOLLECTOR-DBCOLLECTOR_ACTIVE_ICON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DBA_DBH_DATACOLLECTOR 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_DBH_DATACOLLECTOR 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_DBH_DATACOLLECTOR INTO WA_DBA_DBH_DATACOLLECTOR.


*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_DBH_DATACOLLECTOR_STR, 
CLASS TYPE STRING,
DBREL TYPE STRING,
DBMAX TYPE STRING,
DATA_COLLECTOR TYPE STRING,
DATA_COLLECTOR_TYPE TYPE STRING,
DATA_COLLECTOR_SET_UP TYPE STRING,
DATA_COLLECTOR_SET_UP_ICON TYPE STRING,
DATA_COLLECTOR_REPAIR_REQUIRED TYPE STRING,
HAS_DBCOLLECTOR TYPE STRING,
DBCOLLECTOR_ACTIVE TYPE STRING,
DBCOLLECTOR_ACTIVE_ICON TYPE STRING,
SCHEDULE TYPE STRING,
SCHEDULE_ID TYPE STRING,
SCHEDULE_INTVAL TYPE STRING,
SCHEDULE_INTVAL_LIST TYPE STRING,
DETAIL_LEVEL TYPE STRING,
DAYS_KEPT TYPE STRING,
FIRST_HISTORY_ENTRY TYPE STRING,
LAST_HISTORY_ENTRY TYPE STRING,
DATA_AVAILABLE_FROM TYPE STRING,
DATA_AVAILABLE_TO TYPE STRING,
AVAILABLE_DAYS TYPE STRING,
ALLOCATED_DISK_SPACE_MB TYPE STRING,
ERRORS TYPE STRING,
WARNINGS TYPE STRING,
OPTIONS TYPE STRING,
HINT_TEXT TYPE STRING,
SOURCE TYPE STRING,
REPAIR_DETAILS TYPE STRING,
VERSION TYPE STRING,
MAINTENANCE_MODE TYPE STRING,
MAINTENANCE_TEXT TYPE STRING,
EXPECTED_SOURCE TYPE STRING,
OWNER TYPE STRING,
CHECK_ID TYPE STRING,
HAS_SCHEDULE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DBA_DBH_DATACOLLECTOR_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_DBH_DATACOLLECTOR_STR-CLASS sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-DBREL sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-DBMAX sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-DATA_COLLECTOR sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-DATA_COLLECTOR_TYPE sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-DATA_COLLECTOR_SET_UP sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-DATA_COLLECTOR_SET_UP_ICON sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-DATA_COLLECTOR_REPAIR_REQUIRED sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-HAS_DBCOLLECTOR sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-DBCOLLECTOR_ACTIVE sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-DBCOLLECTOR_ACTIVE_ICON sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-SCHEDULE sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-SCHEDULE_ID sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-SCHEDULE_INTVAL sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-SCHEDULE_INTVAL_LIST sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-DETAIL_LEVEL sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-DAYS_KEPT sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-FIRST_HISTORY_ENTRY sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-LAST_HISTORY_ENTRY sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-DATA_AVAILABLE_FROM sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-DATA_AVAILABLE_TO sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-AVAILABLE_DAYS sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-ALLOCATED_DISK_SPACE_MB sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-ERRORS sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-WARNINGS sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-OPTIONS sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-HINT_TEXT sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-SOURCE sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-REPAIR_DETAILS sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-VERSION sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-MAINTENANCE_MODE sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-MAINTENANCE_TEXT sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-EXPECTED_SOURCE sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-OWNER sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-CHECK_ID sy-vline 
WA_DBA_DBH_DATACOLLECTOR_STR-HAS_SCHEDULE sy-vline      INTO ld_text SEPARATED BY SPACE.

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