ABAP Select data from SAP table SMOI_WS_RFC_TASK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SMOI_WS_RFC_TASK
*  INTO TABLE @DATA(IT_SMOI_WS_RFC_TASK2).
*--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_SMOI_WS_RFC_TASK INDEX 1 INTO DATA(WA_SMOI_WS_RFC_TASK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SMOI_WS_RFC_TASK>-RFCDESTCOLL = 1.
<SMOI_WS_RFC_TASK>-RFCDESTANAL = 1.
<SMOI_WS_RFC_TASK>-SCOPE_COLL = 1.
<SMOI_WS_RFC_TASK>-SCOPE_ANAL = 1.
<SMOI_WS_RFC_TASK>-RFCHOST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SMOI_WS_RFC_TASK-RFCLBFLAG, sy-vline,
  WA_SMOI_WS_RFC_TASK-RFCLOAD, sy-vline,
  WA_SMOI_WS_RFC_TASK-RFCSERVICE, sy-vline,
  WA_SMOI_WS_RFC_TASK-RFCCLIENT, sy-vline,
  WA_SMOI_WS_RFC_TASK-RFCUSER, sy-vline,
  WA_SMOI_WS_RFC_TASK-RFCAUTH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SMOI_WS_RFC_TASK 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_SMOI_WS_RFC_TASK 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_SMOI_WS_RFC_TASK INTO WA_SMOI_WS_RFC_TASK.


*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.

*Conversion exit ISOLA, internal->external for field RFCLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SMOI_WS_RFC_TASK-RFCLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SMOI_WS_RFC_TASK-RFCLANG.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SMOI_WS_RFC_TASK_STR, 
RFCDESTCOLL TYPE STRING,
RFCDESTANAL TYPE STRING,
SCOPE_COLL TYPE STRING,
SCOPE_ANAL TYPE STRING,
RFCHOST TYPE STRING,
RFCLBFLAG TYPE STRING,
RFCLOAD TYPE STRING,
RFCSERVICE TYPE STRING,
RFCCLIENT TYPE STRING,
RFCUSER TYPE STRING,
RFCAUTH TYPE STRING,
RFCLANG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SMOI_WS_RFC_TASK_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_SMOI_WS_RFC_TASK_STR-RFCDESTCOLL sy-vline 
WA_SMOI_WS_RFC_TASK_STR-RFCDESTANAL sy-vline 
WA_SMOI_WS_RFC_TASK_STR-SCOPE_COLL sy-vline 
WA_SMOI_WS_RFC_TASK_STR-SCOPE_ANAL sy-vline 
WA_SMOI_WS_RFC_TASK_STR-RFCHOST sy-vline 
WA_SMOI_WS_RFC_TASK_STR-RFCLBFLAG sy-vline 
WA_SMOI_WS_RFC_TASK_STR-RFCLOAD sy-vline 
WA_SMOI_WS_RFC_TASK_STR-RFCSERVICE sy-vline 
WA_SMOI_WS_RFC_TASK_STR-RFCCLIENT sy-vline 
WA_SMOI_WS_RFC_TASK_STR-RFCUSER sy-vline 
WA_SMOI_WS_RFC_TASK_STR-RFCAUTH sy-vline 
WA_SMOI_WS_RFC_TASK_STR-RFCLANG sy-vline      INTO ld_text SEPARATED BY SPACE.

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