ABAP Select data from SAP table FMYC_CFPARAMETER_KEY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMYC_CFPARAMETER_KEY
*  INTO TABLE @DATA(IT_FMYC_CFPARAMETER_KEY2).
*--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_FMYC_CFPARAMETER_KEY INDEX 1 INTO DATA(WA_FMYC_CFPARAMETER_KEY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMYC_CFPARAMETER_KEY>-FIKRS = 1.
<FMYC_CFPARAMETER_KEY>-GJAHR = 1.
<FMYC_CFPARAMETER_KEY>-WRTTP = 1.
<FMYC_CFPARAMETER_KEY>-RLDNR = 1.
<FMYC_CFPARAMETER_KEY>-PROCESS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMYC_CFPARAMETER_KEY-NUMBER, sy-vline,
  WA_FMYC_CFPARAMETER_KEY-FIPEX, sy-vline,
  WA_FMYC_CFPARAMETER_KEY-FICTR, sy-vline,
  WA_FMYC_CFPARAMETER_KEY-FUND, sy-vline,
  WA_FMYC_CFPARAMETER_KEY-FAREA, sy-vline,
  WA_FMYC_CFPARAMETER_KEY-MEASURE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMYC_CFPARAMETER_KEY 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_FMYC_CFPARAMETER_KEY 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_FMYC_CFPARAMETER_KEY INTO WA_FMYC_CFPARAMETER_KEY.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMYC_CFPARAMETER_KEY-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMYC_CFPARAMETER_KEY-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMYC_CFPARAMETER_KEY-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMYC_CFPARAMETER_KEY-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FIPEX, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FIPEX_OUTPUT'
  EXPORTING
    input =                      WA_FMYC_CFPARAMETER_KEY-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMYC_CFPARAMETER_KEY-FIPEX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMYC_CFPARAMETER_KEY-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMYC_CFPARAMETER_KEY-GRANT_NBR.
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_FMYC_CFPARAMETER_KEY_STR, 
FIKRS TYPE STRING,
GJAHR TYPE STRING,
WRTTP TYPE STRING,
RLDNR TYPE STRING,
PROCESS TYPE STRING,
NUMBER TYPE STRING,
FIPEX TYPE STRING,
FICTR TYPE STRING,
FUND TYPE STRING,
FAREA TYPE STRING,
MEASURE TYPE STRING,
GRANT_NBR TYPE STRING,
BUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMYC_CFPARAMETER_KEY_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_FMYC_CFPARAMETER_KEY_STR-FIKRS sy-vline 
WA_FMYC_CFPARAMETER_KEY_STR-GJAHR sy-vline 
WA_FMYC_CFPARAMETER_KEY_STR-WRTTP sy-vline 
WA_FMYC_CFPARAMETER_KEY_STR-RLDNR sy-vline 
WA_FMYC_CFPARAMETER_KEY_STR-PROCESS sy-vline 
WA_FMYC_CFPARAMETER_KEY_STR-NUMBER sy-vline 
WA_FMYC_CFPARAMETER_KEY_STR-FIPEX sy-vline 
WA_FMYC_CFPARAMETER_KEY_STR-FICTR sy-vline 
WA_FMYC_CFPARAMETER_KEY_STR-FUND sy-vline 
WA_FMYC_CFPARAMETER_KEY_STR-FAREA sy-vline 
WA_FMYC_CFPARAMETER_KEY_STR-MEASURE sy-vline 
WA_FMYC_CFPARAMETER_KEY_STR-GRANT_NBR sy-vline 
WA_FMYC_CFPARAMETER_KEY_STR-BUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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