ABAP Select data from SAP table GTCN_FPM_S_TR_POSTLOG into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP GTCN_FPM_S_TR_POSTLOG 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_POSTLOG. 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_POSTLOG 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_POSTLOG TYPE STANDARD TABLE OF GTCN_FPM_S_TR_POSTLOG,
      WA_GTCN_FPM_S_TR_POSTLOG TYPE GTCN_FPM_S_TR_POSTLOG,
      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_POSTLOG> TYPE GTCN_FPM_S_TR_POSTLOG.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GTCN_FPM_S_TR_POSTLOG
*  INTO TABLE @DATA(IT_GTCN_FPM_S_TR_POSTLOG2).
*--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_POSTLOG INDEX 1 INTO DATA(WA_GTCN_FPM_S_TR_POSTLOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GTCN_FPM_S_TR_POSTLOG>-FILE_ID = 1.
<GTCN_FPM_S_TR_POSTLOG>-BUKRS = 1.
<GTCN_FPM_S_TR_POSTLOG>-SAKNR = 1.
<GTCN_FPM_S_TR_POSTLOG>-BUDAT = 1.
<GTCN_FPM_S_TR_POSTLOG>-MONAT = 1.

ENDLOOP.

LOOP AT IT_GTCN_FPM_S_TR_POSTLOG INTO WA_GTCN_FPM_S_TR_POSTLOG.
*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_POSTLOG-BELNR, sy-vline,
  WA_GTCN_FPM_S_TR_POSTLOG-BUZEI, sy-vline,
  WA_GTCN_FPM_S_TR_POSTLOG-TXT20, sy-vline,
  WA_GTCN_FPM_S_TR_POSTLOG-DEBIT, sy-vline,
  WA_GTCN_FPM_S_TR_POSTLOG-CREDIT, sy-vline,
  WA_GTCN_FPM_S_TR_POSTLOG-TOTAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GTCN_FPM_S_TR_POSTLOG 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_POSTLOG 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_POSTLOG INTO WA_GTCN_FPM_S_TR_POSTLOG.


*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 SAKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GTCN_FPM_S_TR_POSTLOG-SAKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GTCN_FPM_S_TR_POSTLOG-SAKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GTCN_FPM_S_TR_POSTLOG-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GTCN_FPM_S_TR_POSTLOG-BELNR.
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_POSTLOG_STR, 
FILE_ID TYPE STRING,
BUKRS TYPE STRING,
SAKNR TYPE STRING,
BUDAT TYPE STRING,
MONAT TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
TXT20 TYPE STRING,
DEBIT TYPE STRING,
CREDIT TYPE STRING,
TOTAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GTCN_FPM_S_TR_POSTLOG_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_POSTLOG_STR-FILE_ID sy-vline 
WA_GTCN_FPM_S_TR_POSTLOG_STR-BUKRS sy-vline 
WA_GTCN_FPM_S_TR_POSTLOG_STR-SAKNR sy-vline 
WA_GTCN_FPM_S_TR_POSTLOG_STR-BUDAT sy-vline 
WA_GTCN_FPM_S_TR_POSTLOG_STR-MONAT sy-vline 
WA_GTCN_FPM_S_TR_POSTLOG_STR-BELNR sy-vline 
WA_GTCN_FPM_S_TR_POSTLOG_STR-BUZEI sy-vline 
WA_GTCN_FPM_S_TR_POSTLOG_STR-TXT20 sy-vline 
WA_GTCN_FPM_S_TR_POSTLOG_STR-DEBIT sy-vline 
WA_GTCN_FPM_S_TR_POSTLOG_STR-CREDIT sy-vline 
WA_GTCN_FPM_S_TR_POSTLOG_STR-TOTAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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