ABAP Select data from SAP table TRFS_MAN_POST_GUI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRFS_MAN_POST_GUI
*  INTO TABLE @DATA(IT_TRFS_MAN_POST_GUI2).
*--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_TRFS_MAN_POST_GUI INDEX 1 INTO DATA(WA_TRFS_MAN_POST_GUI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRFS_MAN_POST_GUI>-MANDT = 1.
<TRFS_MAN_POST_GUI>-MAN_POST_GUID = 1.
<TRFS_MAN_POST_GUI>-BUSTRANSID = 1.
<TRFS_MAN_POST_GUI>-BUSTRANSCAT = 1.
<TRFS_MAN_POST_GUI>-COMPANY_CODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRFS_MAN_POST_GUI-CALC_POS_GUID, sy-vline,
  WA_TRFS_MAN_POST_GUI-POSITION_DATE, sy-vline,
  WA_TRFS_MAN_POST_GUI-PAYMENT_DATE, sy-vline,
  WA_TRFS_MAN_POST_GUI-DUE_DATE, sy-vline,
  WA_TRFS_MAN_POST_GUI-POSTING_DATE, sy-vline,
  WA_TRFS_MAN_POST_GUI-ALLOC_NMBR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRFS_MAN_POST_GUI 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_TRFS_MAN_POST_GUI 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_TRFS_MAN_POST_GUI INTO WA_TRFS_MAN_POST_GUI.


*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 ALPHA, internal->external for field DEAL_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRFS_MAN_POST_GUI-DEAL_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRFS_MAN_POST_GUI-DEAL_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field FX_RATE1
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_TRFS_MAN_POST_GUI-FX_RATE1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRFS_MAN_POST_GUI-FX_RATE1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field FX_RATE2
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_TRFS_MAN_POST_GUI-FX_RATE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRFS_MAN_POST_GUI-FX_RATE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field FX_RATE3
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_TRFS_MAN_POST_GUI-FX_RATE3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRFS_MAN_POST_GUI-FX_RATE3.
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_TRFS_MAN_POST_GUI_STR, 
MANDT TYPE STRING,
MAN_POST_GUID TYPE STRING,
BUSTRANSID TYPE STRING,
BUSTRANSCAT TYPE STRING,
COMPANY_CODE TYPE STRING,
CALC_POS_GUID TYPE STRING,
POSITION_DATE TYPE STRING,
PAYMENT_DATE TYPE STRING,
DUE_DATE TYPE STRING,
POSTING_DATE TYPE STRING,
ALLOC_NMBR TYPE STRING,
HOUSE_BANK TYPE STRING,
HOUSE_BANK_ACC TYPE STRING,
STATUS TYPE STRING,
DEAL_NUMBER TYPE STRING,
FIXING_USER TYPE STRING,
FIXING_DATE TYPE STRING,
FIXING_TIME TYPE STRING,
REVERSAL_REASON TYPE STRING,
REVERSAL_USER TYPE STRING,
REVERSAL_DATE TYPE STRING,
REVERSAL_TIME TYPE STRING,
PAYMENT_CURR TYPE STRING,
POSITION_CURR TYPE STRING,
LOCAL_CURR TYPE STRING,
FLG_FX_RATE1 TYPE STRING,
FX_RATE1 TYPE STRING,
CURR1_FROM TYPE STRING,
CURR1_TO TYPE STRING,
FLG_FX_RATE2 TYPE STRING,
FX_RATE2 TYPE STRING,
CURR2_FROM TYPE STRING,
CURR2_TO TYPE STRING,
FLG_FX_RATE3 TYPE STRING,
FX_RATE3 TYPE STRING,
CURR3_FROM TYPE STRING,
CURR3_TO TYPE STRING,
ACCOUNT_NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRFS_MAN_POST_GUI_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_TRFS_MAN_POST_GUI_STR-MANDT sy-vline 
WA_TRFS_MAN_POST_GUI_STR-MAN_POST_GUID sy-vline 
WA_TRFS_MAN_POST_GUI_STR-BUSTRANSID sy-vline 
WA_TRFS_MAN_POST_GUI_STR-BUSTRANSCAT sy-vline 
WA_TRFS_MAN_POST_GUI_STR-COMPANY_CODE sy-vline 
WA_TRFS_MAN_POST_GUI_STR-CALC_POS_GUID sy-vline 
WA_TRFS_MAN_POST_GUI_STR-POSITION_DATE sy-vline 
WA_TRFS_MAN_POST_GUI_STR-PAYMENT_DATE sy-vline 
WA_TRFS_MAN_POST_GUI_STR-DUE_DATE sy-vline 
WA_TRFS_MAN_POST_GUI_STR-POSTING_DATE sy-vline 
WA_TRFS_MAN_POST_GUI_STR-ALLOC_NMBR sy-vline 
WA_TRFS_MAN_POST_GUI_STR-HOUSE_BANK sy-vline 
WA_TRFS_MAN_POST_GUI_STR-HOUSE_BANK_ACC sy-vline 
WA_TRFS_MAN_POST_GUI_STR-STATUS sy-vline 
WA_TRFS_MAN_POST_GUI_STR-DEAL_NUMBER sy-vline 
WA_TRFS_MAN_POST_GUI_STR-FIXING_USER sy-vline 
WA_TRFS_MAN_POST_GUI_STR-FIXING_DATE sy-vline 
WA_TRFS_MAN_POST_GUI_STR-FIXING_TIME sy-vline 
WA_TRFS_MAN_POST_GUI_STR-REVERSAL_REASON sy-vline 
WA_TRFS_MAN_POST_GUI_STR-REVERSAL_USER sy-vline 
WA_TRFS_MAN_POST_GUI_STR-REVERSAL_DATE sy-vline 
WA_TRFS_MAN_POST_GUI_STR-REVERSAL_TIME sy-vline 
WA_TRFS_MAN_POST_GUI_STR-PAYMENT_CURR sy-vline 
WA_TRFS_MAN_POST_GUI_STR-POSITION_CURR sy-vline 
WA_TRFS_MAN_POST_GUI_STR-LOCAL_CURR sy-vline 
WA_TRFS_MAN_POST_GUI_STR-FLG_FX_RATE1 sy-vline 
WA_TRFS_MAN_POST_GUI_STR-FX_RATE1 sy-vline 
WA_TRFS_MAN_POST_GUI_STR-CURR1_FROM sy-vline 
WA_TRFS_MAN_POST_GUI_STR-CURR1_TO sy-vline 
WA_TRFS_MAN_POST_GUI_STR-FLG_FX_RATE2 sy-vline 
WA_TRFS_MAN_POST_GUI_STR-FX_RATE2 sy-vline 
WA_TRFS_MAN_POST_GUI_STR-CURR2_FROM sy-vline 
WA_TRFS_MAN_POST_GUI_STR-CURR2_TO sy-vline 
WA_TRFS_MAN_POST_GUI_STR-FLG_FX_RATE3 sy-vline 
WA_TRFS_MAN_POST_GUI_STR-FX_RATE3 sy-vline 
WA_TRFS_MAN_POST_GUI_STR-CURR3_FROM sy-vline 
WA_TRFS_MAN_POST_GUI_STR-CURR3_TO sy-vline 
WA_TRFS_MAN_POST_GUI_STR-ACCOUNT_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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