ABAP Select data from SAP table RCF_S_MDL_AF_DATA_TRANSFER_ACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCF_S_MDL_AF_DATA_TRANSFER_ACT
*  INTO TABLE @DATA(IT_RCF_S_MDL_AF_DATA_TRANSFER_ACT2).
*--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_RCF_S_MDL_AF_DATA_TRANSFER_ACT INDEX 1 INTO DATA(WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCF_S_MDL_AF_DATA_TRANSFER_ACT>-MANDT = 1.
<RCF_S_MDL_AF_DATA_TRANSFER_ACT>-PLVAR = 1.
<RCF_S_MDL_AF_DATA_TRANSFER_ACT>-OTYPE = 1.
<RCF_S_MDL_AF_DATA_TRANSFER_ACT>-OBJID = 1.
<RCF_S_MDL_AF_DATA_TRANSFER_ACT>-INFTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT-SUBTY, sy-vline,
  WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT-ISTAT, sy-vline,
  WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT-PRIOX, sy-vline,
  WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT-BEGDA, sy-vline,
  WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT-ENDDA, sy-vline,
  WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT-VARYF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT 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_RCF_S_MDL_AF_DATA_TRANSFER_ACT 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_RCF_S_MDL_AF_DATA_TRANSFER_ACT INTO WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT.


*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_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
PRIOX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
REASN TYPE STRING,
HISTO TYPE STRING,
ITXNR TYPE STRING,
ACT_TYPE TYPE STRING,
ACT_GUID TYPE STRING,
STATUS TYPE STRING,
DUE_DATE TYPE STRING,
RES_SCLAS TYPE STRING,
RES_SOBID TYPE STRING,
NOTE TYPE STRING,
ACT_CAT TYPE STRING,
DATE_EXECUTED TYPE STRING,
EXECUTER TYPE STRING,
ACT_PROC TYPE STRING,
SUBAREA TYPE STRING,
TG_ID TYPE STRING,
LAST_CHANGED TYPE STRING,
CREATOR TYPE STRING,
CREATED_ON TYPE STRING,
HIRE_DATE TYPE STRING,
HIRING_ORGUNIT TYPE STRING,
NEW_POSITION TYPE STRING,
LEAVING_DATE TYPE STRING,
ACT_TYPE_TXT TYPE STRING,
STATUS_TXT TYPE STRING,
ACT_CAT_TXT TYPE STRING,
RES_NAME TYPE STRING,
ACT_PROC_TXT TYPE STRING,
EXECUTER_NAME TYPE STRING,
ACT_PROC_SEQ_NR TYPE STRING,
LAST_CHANGED_BY_NAME TYPE STRING,
CREATOR_NAME TYPE STRING,
HIRING_ORGUNIT_TXT TYPE STRING,
NEW_POSITION_TXT TYPE STRING,
DUE_DATE_AF TYPE STRING,
DATE_EXECUTED_AF TYPE STRING,
HIRE_DATE_AF TYPE STRING,
LEAVING_DATE_AF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_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_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-MANDT sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-PLVAR sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-OTYPE sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-OBJID sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-INFTY sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-SUBTY sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-ISTAT sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-PRIOX sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-BEGDA sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-ENDDA sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-VARYF sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-SEQNR sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-AEDTM sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-UNAME sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-REASN sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-HISTO sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-ITXNR sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-ACT_TYPE sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-ACT_GUID sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-STATUS sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-DUE_DATE sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-RES_SCLAS sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-RES_SOBID sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-NOTE sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-ACT_CAT sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-DATE_EXECUTED sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-EXECUTER sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-ACT_PROC sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-SUBAREA sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-TG_ID sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-LAST_CHANGED sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-CREATOR sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-CREATED_ON sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-HIRE_DATE sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-HIRING_ORGUNIT sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-NEW_POSITION sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-LEAVING_DATE sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-ACT_TYPE_TXT sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-STATUS_TXT sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-ACT_CAT_TXT sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-RES_NAME sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-ACT_PROC_TXT sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-EXECUTER_NAME sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-ACT_PROC_SEQ_NR sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-LAST_CHANGED_BY_NAME sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-CREATOR_NAME sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-HIRING_ORGUNIT_TXT sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-NEW_POSITION_TXT sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-DUE_DATE_AF sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-DATE_EXECUTED_AF sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-HIRE_DATE_AF sy-vline 
WA_RCF_S_MDL_AF_DATA_TRANSFER_ACT_STR-LEAVING_DATE_AF sy-vline      INTO ld_text SEPARATED BY SPACE.

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