ABAP Select data from SAP table /CFG/CNV_IMG_FPT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /CFG/CNV_IMG_FPT 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 /CFG/CNV_IMG_FPT. 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 /CFG/CNV_IMG_FPT 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_/CFG/CNV_IMG_FPT TYPE STANDARD TABLE OF /CFG/CNV_IMG_FPT,
      WA_/CFG/CNV_IMG_FPT TYPE /CFG/CNV_IMG_FPT,
      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: </CFG/CNV_IMG_FPT> TYPE /CFG/CNV_IMG_FPT.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /CFG/CNV_IMG_FPT
  INTO TABLE IT_/CFG/CNV_IMG_FPT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /CFG/CNV_IMG_FPT
*  INTO TABLE @DATA(IT_/CFG/CNV_IMG_FPT2).
*--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_/CFG/CNV_IMG_FPT INDEX 1 INTO DATA(WA_/CFG/CNV_IMG_FPT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/CFG/CNV_IMG_FPT ASSIGNING </CFG/CNV_IMG_FPT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</CFG/CNV_IMG_FPT>-RUNID = 1.
</CFG/CNV_IMG_FPT>-TABNAME = 1.
</CFG/CNV_IMG_FPT>-CATEGORY = 1.
</CFG/CNV_IMG_FPT>-CF_BEST_PRACTISE = 1.
</CFG/CNV_IMG_FPT>-OLD_BEST_PRACTISE = 1.

ENDLOOP.

LOOP AT IT_/CFG/CNV_IMG_FPT INTO WA_/CFG/CNV_IMG_FPT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/CFG/CNV_IMG_FPT-SSCUI, sy-vline,
  WA_/CFG/CNV_IMG_FPT-EXPERT_CONFIG, sy-vline,
  WA_/CFG/CNV_IMG_FPT-EXCLUDE, sy-vline,
  WA_/CFG/CNV_IMG_FPT-UNEXPECTED, sy-vline,
  WA_/CFG/CNV_IMG_FPT-SCOPED, sy-vline,
  WA_/CFG/CNV_IMG_FPT-ONLY_CLIENT_KEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/CFG/CNV_IMG_FPT 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_/CFG/CNV_IMG_FPT 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_/CFG/CNV_IMG_FPT INTO WA_/CFG/CNV_IMG_FPT.


*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_/CFG/CNV_IMG_FPT_STR, 
RUNID TYPE STRING,
TABNAME TYPE STRING,
CATEGORY TYPE STRING,
CF_BEST_PRACTISE TYPE STRING,
OLD_BEST_PRACTISE TYPE STRING,
SSCUI TYPE STRING,
EXPERT_CONFIG TYPE STRING,
EXCLUDE TYPE STRING,
UNEXPECTED TYPE STRING,
SCOPED TYPE STRING,
ONLY_CLIENT_KEY TYPE STRING,
CONV_RELEVANT TYPE STRING,
TOTAL_LINES TYPE STRING,
NEW_KEY TYPE STRING,
DIFF_VALUE TYPE STRING,
NON_EXISTENT_KEY TYPE STRING,
TOTAL_LINES_CMP TYPE STRING,
CONTFLAG TYPE STRING,
CLIDEP TYPE STRING,
IS_TEXT_TABLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/CFG/CNV_IMG_FPT_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_/CFG/CNV_IMG_FPT_STR-RUNID sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-TABNAME sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-CATEGORY sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-CF_BEST_PRACTISE sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-OLD_BEST_PRACTISE sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-SSCUI sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-EXPERT_CONFIG sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-EXCLUDE sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-UNEXPECTED sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-SCOPED sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-ONLY_CLIENT_KEY sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-CONV_RELEVANT sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-TOTAL_LINES sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-NEW_KEY sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-DIFF_VALUE sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-NON_EXISTENT_KEY sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-TOTAL_LINES_CMP sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-CONTFLAG sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-CLIDEP sy-vline 
WA_/CFG/CNV_IMG_FPT_STR-IS_TEXT_TABLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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