ABAP Select data from SAP table CTE_S_FIN_POST_DOC_ENTRY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CTE_S_FIN_POST_DOC_ENTRY
*  INTO TABLE @DATA(IT_CTE_S_FIN_POST_DOC_ENTRY2).
*--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_CTE_S_FIN_POST_DOC_ENTRY INDEX 1 INTO DATA(WA_CTE_S_FIN_POST_DOC_ENTRY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CTE_S_FIN_POST_DOC_ENTRY>-ENTRY_ID = 1.
<CTE_S_FIN_POST_DOC_ENTRY>-REVERSAL_ENTRY_ID = 1.
<CTE_S_FIN_POST_DOC_ENTRY>-ENTRY_COUNTER = 1.
<CTE_S_FIN_POST_DOC_ENTRY>-ENTRY_DATE = 1.
<CTE_S_FIN_POST_DOC_ENTRY>-CLEARING_ACCOUNT_CODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CTE_S_FIN_POST_DOC_ENTRY-CARD_TRANSACTION_ID, sy-vline,
  WA_CTE_S_FIN_POST_DOC_ENTRY-CARD_TRANSACTION_POSTED_CURR, sy-vline,
  WA_CTE_S_FIN_POST_DOC_ENTRY-CARD_ACCOUNT_ID, sy-vline,
  WA_CTE_S_FIN_POST_DOC_ENTRY-CARD_PROGRAM_TYPE_CODE, sy-vline,
  WA_CTE_S_FIN_POST_DOC_ENTRY-EXPENSE_TYPE_CODE, sy-vline,
  WA_CTE_S_FIN_POST_DOC_ENTRY-EXPENSE_TYPE_NAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CTE_S_FIN_POST_DOC_ENTRY 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_CTE_S_FIN_POST_DOC_ENTRY 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_CTE_S_FIN_POST_DOC_ENTRY INTO WA_CTE_S_FIN_POST_DOC_ENTRY.


*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 CLEARING_ACCOUNT_CODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CTE_S_FIN_POST_DOC_ENTRY-CLEARING_ACCOUNT_CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CTE_S_FIN_POST_DOC_ENTRY-CLEARING_ACCOUNT_CODE.
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_CTE_S_FIN_POST_DOC_ENTRY_STR, 
ENTRY_ID TYPE STRING,
REVERSAL_ENTRY_ID TYPE STRING,
ENTRY_COUNTER TYPE STRING,
ENTRY_DATE TYPE STRING,
CLEARING_ACCOUNT_CODE TYPE STRING,
CARD_TRANSACTION_ID TYPE STRING,
CARD_TRANSACTION_POSTED_CURR TYPE STRING,
CARD_ACCOUNT_ID TYPE STRING,
CARD_PROGRAM_TYPE_CODE TYPE STRING,
EXPENSE_TYPE_CODE TYPE STRING,
EXPENSE_TYPE_NAME TYPE STRING,
IS_PERSONAL TYPE STRING,
OFFSET_PAY_TYPE_INDICATOR TYPE STRING,
EXTERNAL_PAYMENT_PROVIDER TYPE STRING,
REVERSE_IND TYPE STRING,
REQUEST_GUID TYPE STRING,
REQUEST_ENTRY_GUID TYPE STRING,
ALLOCATION TYPE STRING,
ADDITIONAL_DATA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CTE_S_FIN_POST_DOC_ENTRY_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_CTE_S_FIN_POST_DOC_ENTRY_STR-ENTRY_ID sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-REVERSAL_ENTRY_ID sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-ENTRY_COUNTER sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-ENTRY_DATE sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-CLEARING_ACCOUNT_CODE sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-CARD_TRANSACTION_ID sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-CARD_TRANSACTION_POSTED_CURR sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-CARD_ACCOUNT_ID sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-CARD_PROGRAM_TYPE_CODE sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-EXPENSE_TYPE_CODE sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-EXPENSE_TYPE_NAME sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-IS_PERSONAL sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-OFFSET_PAY_TYPE_INDICATOR sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-EXTERNAL_PAYMENT_PROVIDER sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-REVERSE_IND sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-REQUEST_GUID sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-REQUEST_ENTRY_GUID sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-ALLOCATION sy-vline 
WA_CTE_S_FIN_POST_DOC_ENTRY_STR-ADDITIONAL_DATA sy-vline      INTO ld_text SEPARATED BY SPACE.

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