ABAP Select data from SAP table GTCN_FPM_S_TR_FILEDETAIL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GTCN_FPM_S_TR_FILEDETAIL
*  INTO TABLE @DATA(IT_GTCN_FPM_S_TR_FILEDETAIL2).
*--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_GTCN_FPM_S_TR_FILEDETAIL INDEX 1 INTO DATA(WA_GTCN_FPM_S_TR_FILEDETAIL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GTCN_FPM_S_TR_FILEDETAIL>-FILE_ID = 1.
<GTCN_FPM_S_TR_FILEDETAIL>-COMPANY_CODE = 1.
<GTCN_FPM_S_TR_FILEDETAIL>-COMPANY_NAME = 1.
<GTCN_FPM_S_TR_FILEDETAIL>-FILE_DESC = 1.
<GTCN_FPM_S_TR_FILEDETAIL>-RUN_DESCR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GTCN_FPM_S_TR_FILEDETAIL-FISCAL_YEAR, sy-vline,
  WA_GTCN_FPM_S_TR_FILEDETAIL-FISCAL_PERIOD, sy-vline,
  WA_GTCN_FPM_S_TR_FILEDETAIL-FILE_STATUS, sy-vline,
  WA_GTCN_FPM_S_TR_FILEDETAIL-TOTAL_REC_NO, sy-vline,
  WA_GTCN_FPM_S_TR_FILEDETAIL-CREATED_ON, sy-vline,
  WA_GTCN_FPM_S_TR_FILEDETAIL-CREATED_BY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GTCN_FPM_S_TR_FILEDETAIL 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_GTCN_FPM_S_TR_FILEDETAIL 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_GTCN_FPM_S_TR_FILEDETAIL INTO WA_GTCN_FPM_S_TR_FILEDETAIL.


*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 GJAHR, internal->external for field FISCAL_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_GTCN_FPM_S_TR_FILEDETAIL-FISCAL_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GTCN_FPM_S_TR_FILEDETAIL-FISCAL_YEAR.
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_GTCN_FPM_S_TR_FILEDETAIL_STR, 
FILE_ID TYPE STRING,
COMPANY_CODE TYPE STRING,
COMPANY_NAME TYPE STRING,
FILE_DESC TYPE STRING,
RUN_DESCR TYPE STRING,
FISCAL_YEAR TYPE STRING,
FISCAL_PERIOD TYPE STRING,
FILE_STATUS TYPE STRING,
TOTAL_REC_NO TYPE STRING,
CREATED_ON TYPE STRING,
CREATED_BY TYPE STRING,
DELETED_BY TYPE STRING,
DELETED_ON TYPE STRING,
LAST_RUN_ON TYPE STRING,
LAST_RUN_BY TYPE STRING,
ITEMNO TYPE STRING,
PERIOD TYPE STRING,
CREATED_BY_NAME TYPE STRING,
FILE_STA_DESC TYPE STRING,
COMMISSION_FLAG TYPE STRING,
TAX_REFUND_FLAG TYPE STRING,
CREATION_DATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GTCN_FPM_S_TR_FILEDETAIL_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_GTCN_FPM_S_TR_FILEDETAIL_STR-FILE_ID sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-COMPANY_CODE sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-COMPANY_NAME sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-FILE_DESC sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-RUN_DESCR sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-FISCAL_YEAR sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-FISCAL_PERIOD sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-FILE_STATUS sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-TOTAL_REC_NO sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-CREATED_ON sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-CREATED_BY sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-DELETED_BY sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-DELETED_ON sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-LAST_RUN_ON sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-LAST_RUN_BY sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-ITEMNO sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-PERIOD sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-CREATED_BY_NAME sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-FILE_STA_DESC sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-COMMISSION_FLAG sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-TAX_REFUND_FLAG sy-vline 
WA_GTCN_FPM_S_TR_FILEDETAIL_STR-CREATION_DATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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