ABAP Select data from SAP table RLOS_AMORTIZATIONCONDITION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RLOS_AMORTIZATIONCONDITION
*  INTO TABLE @DATA(IT_RLOS_AMORTIZATIONCONDITION2).
*--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_RLOS_AMORTIZATIONCONDITION INDEX 1 INTO DATA(WA_RLOS_AMORTIZATIONCONDITION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RLOS_AMORTIZATIONCONDITION>-VALIDFROM = 1.
<RLOS_AMORTIZATIONCONDITION>-VALIDTO = 1.
<RLOS_AMORTIZATIONCONDITION>-DUEDATE = 1.
<RLOS_AMORTIZATIONCONDITION>-FREQUENCY = 1.
<RLOS_AMORTIZATIONCONDITION>-FIRSTDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RLOS_AMORTIZATIONCONDITION-KEYDAY, sy-vline,
  WA_RLOS_AMORTIZATIONCONDITION-STARTDATE, sy-vline,
  WA_RLOS_AMORTIZATIONCONDITION-ENDDATE, sy-vline,
  WA_RLOS_AMORTIZATIONCONDITION-CALCDATE, sy-vline,
  WA_RLOS_AMORTIZATIONCONDITION-FREQUENCY, sy-vline,
  WA_RLOS_AMORTIZATIONCONDITION-FIRSTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RLOS_AMORTIZATIONCONDITION 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_RLOS_AMORTIZATIONCONDITION 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_RLOS_AMORTIZATIONCONDITION INTO WA_RLOS_AMORTIZATIONCONDITION.


*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 PAYER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RLOS_AMORTIZATIONCONDITION-PAYER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLOS_AMORTIZATIONCONDITION-PAYER.
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_RLOS_AMORTIZATIONCONDITION_STR, 
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
DUEDATE TYPE STRING,
FREQUENCY TYPE STRING,
FIRSTDATE TYPE STRING,
KEYDAY TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
CALCDATE TYPE STRING,
FREQUENCY TYPE STRING,
FIRSTDATE TYPE STRING,
KEYDAY TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
AMORTIZATIONATEND TYPE STRING,
ANNUITYPERCENT TYPE STRING,
ANNUITY TYPE STRING,
INSTALLMENT TYPE STRING,
INSTALLMENTPERCENT TYPE STRING,
SETTLEMENT TYPE STRING,
FREQUENCY TYPE STRING,
FIRSTDATE TYPE STRING,
KEYDAY TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
PAYER TYPE STRING,
PAYER_GUID TYPE STRING,
PAYMENTCODE TYPE STRING,
BANKIBAN TYPE STRING,
BANKID TYPE STRING,
DZLSCH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RLOS_AMORTIZATIONCONDITION_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_RLOS_AMORTIZATIONCONDITION_STR-VALIDFROM sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-VALIDTO sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-DUEDATE sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-FREQUENCY sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-FIRSTDATE sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-KEYDAY sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-STARTDATE sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-ENDDATE sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-CALCDATE sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-FREQUENCY sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-FIRSTDATE sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-KEYDAY sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-STARTDATE sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-ENDDATE sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-AMORTIZATIONATEND sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-ANNUITYPERCENT sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-ANNUITY sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-INSTALLMENT sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-INSTALLMENTPERCENT sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-SETTLEMENT sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-FREQUENCY sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-FIRSTDATE sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-KEYDAY sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-STARTDATE sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-ENDDATE sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-PAYER sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-PAYER_GUID sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-PAYMENTCODE sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-BANKIBAN sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-BANKID sy-vline 
WA_RLOS_AMORTIZATIONCONDITION_STR-DZLSCH sy-vline      INTO ld_text SEPARATED BY SPACE.

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