ABAP Select data from SAP table DNOS_EXT_FOR_ACTIVITY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DNOS_EXT_FOR_ACTIVITY
*  INTO TABLE @DATA(IT_DNOS_EXT_FOR_ACTIVITY2).
*--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_DNOS_EXT_FOR_ACTIVITY INDEX 1 INTO DATA(WA_DNOS_EXT_FOR_ACTIVITY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DNOS_EXT_FOR_ACTIVITY>-ATTR_TRAN = 1.
<DNOS_EXT_FOR_ACTIVITY>-LOCALDATE = 1.
<DNOS_EXT_FOR_ACTIVITY>-ACTIONLOG = 1.
<DNOS_EXT_FOR_ACTIVITY>-STATE = 1.
<DNOS_EXT_FOR_ACTIVITY>-COMPLETSTATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DNOS_EXT_FOR_ACTIVITY-ATTR_CONTACT, sy-vline,
  WA_DNOS_EXT_FOR_ACTIVITY-ATTR_PERSON, sy-vline,
  WA_DNOS_EXT_FOR_ACTIVITY-ATTR_ADDRESS, sy-vline,
  WA_DNOS_EXT_FOR_ACTIVITY-ATTR_LOCATION, sy-vline,
  WA_DNOS_EXT_FOR_ACTIVITY-NAME, sy-vline,
  WA_DNOS_EXT_FOR_ACTIVITY-BUSINESS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DNOS_EXT_FOR_ACTIVITY 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_DNOS_EXT_FOR_ACTIVITY 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_DNOS_EXT_FOR_ACTIVITY INTO WA_DNOS_EXT_FOR_ACTIVITY.


*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_DNOS_EXT_FOR_ACTIVITY_STR, 
ATTR_TRAN TYPE STRING,
LOCALDATE TYPE STRING,
ACTIONLOG TYPE STRING,
STATE TYPE STRING,
COMPLETSTATUS TYPE STRING,
ATTR_CONTACT TYPE STRING,
ATTR_PERSON TYPE STRING,
ATTR_ADDRESS TYPE STRING,
ATTR_LOCATION TYPE STRING,
NAME TYPE STRING,
BUSINESS TYPE STRING,
VORNA TYPE STRING,
NACHN TYPE STRING,
ANREK TYPE STRING,
UCORT TYPE STRING,
ORT01 TYPE STRING,
PSTLZ TYPE STRING,
LAND1 TYPE STRING,
TELNR TYPE STRING,
ANRED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DNOS_EXT_FOR_ACTIVITY_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_DNOS_EXT_FOR_ACTIVITY_STR-ATTR_TRAN sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-LOCALDATE sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-ACTIONLOG sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-STATE sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-COMPLETSTATUS sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-ATTR_CONTACT sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-ATTR_PERSON sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-ATTR_ADDRESS sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-ATTR_LOCATION sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-NAME sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-BUSINESS sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-VORNA sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-NACHN sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-ANREK sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-UCORT sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-ORT01 sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-PSTLZ sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-LAND1 sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-TELNR sy-vline 
WA_DNOS_EXT_FOR_ACTIVITY_STR-ANRED sy-vline      INTO ld_text SEPARATED BY SPACE.

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