ABAP Select data from SAP table TRFC_UNIT_INFO_INBOUND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRFC_UNIT_INFO_INBOUND
*  INTO TABLE @DATA(IT_TRFC_UNIT_INFO_INBOUND2).
*--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_TRFC_UNIT_INFO_INBOUND INDEX 1 INTO DATA(WA_TRFC_UNIT_INFO_INBOUND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRFC_UNIT_INFO_INBOUND>-UNIT_ID = 1.
<TRFC_UNIT_INFO_INBOUND>-CLIENT = 1.
<TRFC_UNIT_INFO_INBOUND>-DEST_NAME = 1.
<TRFC_UNIT_INFO_INBOUND>-PRED_CNT = 1.
<TRFC_UNIT_INFO_INBOUND>-REDO_CNT_MANUAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRFC_UNIT_INFO_INBOUND-REDO_CNT_AUTO, sy-vline,
  WA_TRFC_UNIT_INFO_INBOUND-IS_DELETED, sy-vline,
  WA_TRFC_UNIT_INFO_INBOUND-IS_NOOP, sy-vline,
  WA_TRFC_UNIT_INFO_INBOUND-CTIMESTAMP, sy-vline,
  WA_TRFC_UNIT_INFO_INBOUND-UNAME, sy-vline,
  WA_TRFC_UNIT_INFO_INBOUND-TCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRFC_UNIT_INFO_INBOUND 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_TRFC_UNIT_INFO_INBOUND 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_TRFC_UNIT_INFO_INBOUND INTO WA_TRFC_UNIT_INFO_INBOUND.


*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 LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_TRFC_UNIT_INFO_INBOUND-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRFC_UNIT_INFO_INBOUND-LANGU.
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_TRFC_UNIT_INFO_INBOUND_STR, 
UNIT_ID TYPE STRING,
CLIENT TYPE STRING,
DEST_NAME TYPE STRING,
PRED_CNT TYPE STRING,
REDO_CNT_MANUAL TYPE STRING,
REDO_CNT_AUTO TYPE STRING,
IS_DELETED TYPE STRING,
IS_NOOP TYPE STRING,
CTIMESTAMP TYPE STRING,
UNAME TYPE STRING,
TCODE TYPE STRING,
CPROG TYPE STRING,
HOST_NAME TYPE STRING,
UNIT_SIZE TYPE STRING,
EXE_MODE TYPE STRING,
LOCK_ID TYPE STRING,
LOCK_KIND TYPE STRING,
LOCK_REASON TYPE STRING,
STATE TYPE STRING,
SCHEDULER_ID TYPE STRING,
SCHEDULER_INST TYPE STRING,
EXE_STATE TYPE STRING,
EXE_TIME_STAMP TYPE STRING,
FUNCNAME TYPE STRING,
LANGU TYPE STRING,
MESSAGE TYPE STRING,
MESSAGE_ID TYPE STRING,
MESSAGE_NUMBER TYPE STRING,
MESSAGE_V1 TYPE STRING,
MESSAGE_V2 TYPE STRING,
MESSAGE_V3 TYPE STRING,
MESSAGE_V4 TYPE STRING,
FUNCTION_CNT TYPE STRING,
MANUAL_LOCK TYPE STRING,
LOCK_CNT TYPE STRING,
DEBUG_LOCK TYPE STRING,
NO_COMMIT_CHECK TYPE STRING,
UNIT_HISTORY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRFC_UNIT_INFO_INBOUND_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_TRFC_UNIT_INFO_INBOUND_STR-UNIT_ID sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-CLIENT sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-DEST_NAME sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-PRED_CNT sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-REDO_CNT_MANUAL sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-REDO_CNT_AUTO sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-IS_DELETED sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-IS_NOOP sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-CTIMESTAMP sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-UNAME sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-TCODE sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-CPROG sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-HOST_NAME sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-UNIT_SIZE sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-EXE_MODE sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-LOCK_ID sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-LOCK_KIND sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-LOCK_REASON sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-STATE sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-SCHEDULER_ID sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-SCHEDULER_INST sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-EXE_STATE sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-EXE_TIME_STAMP sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-FUNCNAME sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-LANGU sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-MESSAGE sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-MESSAGE_ID sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-MESSAGE_NUMBER sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-MESSAGE_V1 sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-MESSAGE_V2 sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-MESSAGE_V3 sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-MESSAGE_V4 sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-FUNCTION_CNT sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-MANUAL_LOCK sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-LOCK_CNT sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-DEBUG_LOCK sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-NO_COMMIT_CHECK sy-vline 
WA_TRFC_UNIT_INFO_INBOUND_STR-UNIT_HISTORY sy-vline      INTO ld_text SEPARATED BY SPACE.

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