ABAP Select data from SAP table FKC_INSTLMNT_PLN_CRT_REQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKC_INSTLMNT_PLN_CRT_REQ
*  INTO TABLE @DATA(IT_FKC_INSTLMNT_PLN_CRT_REQ2).
*--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_FKC_INSTLMNT_PLN_CRT_REQ INDEX 1 INTO DATA(WA_FKC_INSTLMNT_PLN_CRT_REQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKC_INSTLMNT_PLN_CRT_REQ>-CONTROLLER = 1.
<FKC_INSTLMNT_PLN_CRT_REQ>-SENDER_TECHNICAL_ID = 1.
<FKC_INSTLMNT_PLN_CRT_REQ>-INSTALLMENT_PLAN_HEADER = 1.
<FKC_INSTLMNT_PLN_CRT_REQ>-CONTROLLER = 1.
<FKC_INSTLMNT_PLN_CRT_REQ>-CURRENCY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKC_INSTLMNT_PLN_CRT_REQ-CAINSTALLMENT_PLAN_CATEGORY, sy-vline,
  WA_FKC_INSTLMNT_PLN_CRT_REQ-CAINSTALLMENT_PLAN_TYPE, sy-vline,
  WA_FKC_INSTLMNT_PLN_CRT_REQ-CADOCUMENT_TYPE, sy-vline,
  WA_FKC_INSTLMNT_PLN_CRT_REQ-CAPOSTING_DATE, sy-vline,
  WA_FKC_INSTLMNT_PLN_CRT_REQ-DOCUMENT_DATE, sy-vline,
  WA_FKC_INSTLMNT_PLN_CRT_REQ-CAINSTALLMENT_INTERVAL_VALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKC_INSTLMNT_PLN_CRT_REQ 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_FKC_INSTLMNT_PLN_CRT_REQ 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_FKC_INSTLMNT_PLN_CRT_REQ INTO WA_FKC_INSTLMNT_PLN_CRT_REQ.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FKC_INSTLMNT_PLN_CRT_REQ_STR, 
CONTROLLER TYPE STRING,
SENDER_TECHNICAL_ID TYPE STRING,
INSTALLMENT_PLAN_HEADER TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY TYPE STRING,
CAINSTALLMENT_PLAN_CATEGORY TYPE STRING,
CAINSTALLMENT_PLAN_TYPE TYPE STRING,
CADOCUMENT_TYPE TYPE STRING,
CAPOSTING_DATE TYPE STRING,
DOCUMENT_DATE TYPE STRING,
CAINSTALLMENT_INTERVAL_VALUE TYPE STRING,
CAINSTLMNT_AMOUNT_IN_TRNS_CRCY TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CONTENT TYPE STRING,
CANUMBER_OF_INSTALLMENTS TYPE STRING,
CAINSTALLMENT_PLAN_START_DATE TYPE STRING,
CAINSTLMNT_PLN_INTERVAL_TYPE TYPE STRING,
CAINSTALLMENT_ROUNDING_AMOUNT TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CONTENT TYPE STRING,
CONTRACT_ACCOUNT TYPE STRING,
CONTROLLER TYPE STRING,
INTERNAL_ID TYPE STRING,
LEGACY_CONTRACT_ACCOUNT_ID TYPE STRING,
BUSINESS_PARTNER TYPE STRING,
CONTROLLER TYPE STRING,
INTERNAL_ID TYPE STRING,
LEGACY_BUSINESS_PARTNER_ID TYPE STRING,
CACONTRACT TYPE STRING,
CASUB_APPLICATION TYPE STRING,
CAINTEREST_CALC_START_DATE TYPE STRING,
CADUE_DATE_OF_INTEREST_DOC TYPE STRING,
CAINTEREST_DOCUMENT_TYPE TYPE STRING,
CAINTEREST_CODE TYPE STRING,
CAINSTLMNT_PLN_CHRG_AMNT_INTC TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CONTENT TYPE STRING,
CAINSTLMNT_PLN_RMNG_AMT_DISTR TYPE STRING,
CACHARGE_DOCUMENT_TYPE TYPE STRING,
CAINTRST_AND_CHRGS_DISTRBTD TYPE STRING,
CABUS_PARTNER_DOCUMENT_KEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKC_INSTLMNT_PLN_CRT_REQ_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_FKC_INSTLMNT_PLN_CRT_REQ_STR-CONTROLLER sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-SENDER_TECHNICAL_ID sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-INSTALLMENT_PLAN_HEADER sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CONTROLLER sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CURRENCY sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAINSTALLMENT_PLAN_CATEGORY sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAINSTALLMENT_PLAN_TYPE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CADOCUMENT_TYPE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAPOSTING_DATE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-DOCUMENT_DATE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAINSTALLMENT_INTERVAL_VALUE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAINSTLMNT_AMOUNT_IN_TRNS_CRCY sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CONTROLLER sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CURRENCY_CODE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CONTENT sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CANUMBER_OF_INSTALLMENTS sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAINSTALLMENT_PLAN_START_DATE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAINSTLMNT_PLN_INTERVAL_TYPE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAINSTALLMENT_ROUNDING_AMOUNT sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CONTROLLER sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CURRENCY_CODE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CONTENT sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CONTRACT_ACCOUNT sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CONTROLLER sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-INTERNAL_ID sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-LEGACY_CONTRACT_ACCOUNT_ID sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-BUSINESS_PARTNER sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CONTROLLER sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-INTERNAL_ID sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-LEGACY_BUSINESS_PARTNER_ID sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CACONTRACT sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CASUB_APPLICATION sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAINTEREST_CALC_START_DATE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CADUE_DATE_OF_INTEREST_DOC sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAINTEREST_DOCUMENT_TYPE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAINTEREST_CODE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAINSTLMNT_PLN_CHRG_AMNT_INTC sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CONTROLLER sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CURRENCY_CODE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CONTENT sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAINSTLMNT_PLN_RMNG_AMT_DISTR sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CACHARGE_DOCUMENT_TYPE sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CAINTRST_AND_CHRGS_DISTRBTD sy-vline 
WA_FKC_INSTLMNT_PLN_CRT_REQ_STR-CABUS_PARTNER_DOCUMENT_KEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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