ABAP Select data from SAP table FMCA_FILING_OBLIGATION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMCA_FILING_OBLIGATION
*  INTO TABLE @DATA(IT_FMCA_FILING_OBLIGATION2).
*--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_FMCA_FILING_OBLIGATION INDEX 1 INTO DATA(WA_FMCA_FILING_OBLIGATION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMCA_FILING_OBLIGATION>-INCO_AKTYP = 1.
<FMCA_FILING_OBLIGATION>-LANGUAGE_CODE = 1.
<FMCA_FILING_OBLIGATION>-UUID = 1.
<FMCA_FILING_OBLIGATION>-INCO_CATEGORY = 1.
<FMCA_FILING_OBLIGATION>-INCO_CATEGORY_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMCA_FILING_OBLIGATION-BILLING_PER, sy-vline,
  WA_FMCA_FILING_OBLIGATION-BILLING_PER_NAME, sy-vline,
  WA_FMCA_FILING_OBLIGATION-BILLING_START_DATE, sy-vline,
  WA_FMCA_FILING_OBLIGATION-CORR_STATUS, sy-vline,
  WA_FMCA_FILING_OBLIGATION-CORR_STATUS_NAME, sy-vline,
  WA_FMCA_FILING_OBLIGATION-INCO_DUE_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMCA_FILING_OBLIGATION 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_FMCA_FILING_OBLIGATION 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_FMCA_FILING_OBLIGATION INTO WA_FMCA_FILING_OBLIGATION.


*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 LANGUAGE_CODE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_FMCA_FILING_OBLIGATION-LANGUAGE_CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMCA_FILING_OBLIGATION-LANGUAGE_CODE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LEADING_OBJECT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMCA_FILING_OBLIGATION-LEADING_OBJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMCA_FILING_OBLIGATION-LEADING_OBJECT.
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_FMCA_FILING_OBLIGATION_STR, 
INCO_AKTYP TYPE STRING,
LANGUAGE_CODE TYPE STRING,
UUID TYPE STRING,
INCO_CATEGORY TYPE STRING,
INCO_CATEGORY_NAME TYPE STRING,
BILLING_PER TYPE STRING,
BILLING_PER_NAME TYPE STRING,
BILLING_START_DATE TYPE STRING,
CORR_STATUS TYPE STRING,
CORR_STATUS_NAME TYPE STRING,
INCO_DUE_DATE TYPE STRING,
INCO_RECEIVED_DATE TYPE STRING,
INCO_DEFERRAL_DATE TYPE STRING,
BILLING_END_DATE TYPE STRING,
CLEARING_REASON TYPE STRING,
CLEARING_REASON_NAME TYPE STRING,
LEADING_OBJECT TYPE STRING,
INCO_CONSTATUS TYPE STRING,
INCO_CONSTATUS_NAME TYPE STRING,
AMOUNT TYPE STRING,
CURRENCY TYPE STRING,
CURRENCY_ISO TYPE STRING,
CURRENCY_NAME TYPE STRING,
CORRESP_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMCA_FILING_OBLIGATION_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_FMCA_FILING_OBLIGATION_STR-INCO_AKTYP sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-LANGUAGE_CODE sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-UUID sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-INCO_CATEGORY sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-INCO_CATEGORY_NAME sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-BILLING_PER sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-BILLING_PER_NAME sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-BILLING_START_DATE sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-CORR_STATUS sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-CORR_STATUS_NAME sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-INCO_DUE_DATE sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-INCO_RECEIVED_DATE sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-INCO_DEFERRAL_DATE sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-BILLING_END_DATE sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-CLEARING_REASON sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-CLEARING_REASON_NAME sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-LEADING_OBJECT sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-INCO_CONSTATUS sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-INCO_CONSTATUS_NAME sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-AMOUNT sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-CURRENCY sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-CURRENCY_ISO sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-CURRENCY_NAME sy-vline 
WA_FMCA_FILING_OBLIGATION_STR-CORRESP_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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