ABAP Select data from SAP table DFKKJPCVSFILE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKJPCVSFILE
*  INTO TABLE @DATA(IT_DFKKJPCVSFILE2).
*--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_DFKKJPCVSFILE INDEX 1 INTO DATA(WA_DFKKJPCVSFILE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKJPCVSFILE>-MANDT = 1.
<DFKKJPCVSFILE>-SEQNO = 1.
<DFKKJPCVSFILE>-FORMATTYP = 1.
<DFKKJPCVSFILE>-CREDAT = 1.
<DFKKJPCVSFILE>-CRETIM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKJPCVSFILE-USRIDCODE, sy-vline,
  WA_DFKKJPCVSFILE-VANCODE, sy-vline,
  WA_DFKKJPCVSFILE-USRCODE, sy-vline,
  WA_DFKKJPCVSFILE-RETCODE, sy-vline,
  WA_DFKKJPCVSFILE-RECCODE, sy-vline,
  WA_DFKKJPCVSFILE-REC_TOTAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKJPCVSFILE 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_DFKKJPCVSFILE 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_DFKKJPCVSFILE INTO WA_DFKKJPCVSFILE.


*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_DFKKJPCVSFILE_STR, 
MANDT TYPE STRING,
SEQNO TYPE STRING,
FORMATTYP TYPE STRING,
CREDAT TYPE STRING,
CRETIM TYPE STRING,
USRIDCODE TYPE STRING,
VANCODE TYPE STRING,
USRCODE TYPE STRING,
RETCODE TYPE STRING,
RECCODE TYPE STRING,
REC_TOTAL TYPE STRING,
PRMREC_TOTAL TYPE STRING,
PRMAMT_TOTAL TYPE STRING,
CNFREC_TOTAL TYPE STRING,
CNFAMT_TOTAL TYPE STRING,
RCLREC_TOTAL TYPE STRING,
RCLAMT_TOTAL TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
LOEDT TYPE STRING,
HDRID TYPE STRING,
BLCNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKJPCVSFILE_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_DFKKJPCVSFILE_STR-MANDT sy-vline 
WA_DFKKJPCVSFILE_STR-SEQNO sy-vline 
WA_DFKKJPCVSFILE_STR-FORMATTYP sy-vline 
WA_DFKKJPCVSFILE_STR-CREDAT sy-vline 
WA_DFKKJPCVSFILE_STR-CRETIM sy-vline 
WA_DFKKJPCVSFILE_STR-USRIDCODE sy-vline 
WA_DFKKJPCVSFILE_STR-VANCODE sy-vline 
WA_DFKKJPCVSFILE_STR-USRCODE sy-vline 
WA_DFKKJPCVSFILE_STR-RETCODE sy-vline 
WA_DFKKJPCVSFILE_STR-RECCODE sy-vline 
WA_DFKKJPCVSFILE_STR-REC_TOTAL sy-vline 
WA_DFKKJPCVSFILE_STR-PRMREC_TOTAL sy-vline 
WA_DFKKJPCVSFILE_STR-PRMAMT_TOTAL sy-vline 
WA_DFKKJPCVSFILE_STR-CNFREC_TOTAL sy-vline 
WA_DFKKJPCVSFILE_STR-CNFAMT_TOTAL sy-vline 
WA_DFKKJPCVSFILE_STR-RCLREC_TOTAL sy-vline 
WA_DFKKJPCVSFILE_STR-RCLAMT_TOTAL sy-vline 
WA_DFKKJPCVSFILE_STR-CPUDT sy-vline 
WA_DFKKJPCVSFILE_STR-CPUTM sy-vline 
WA_DFKKJPCVSFILE_STR-LOEDT sy-vline 
WA_DFKKJPCVSFILE_STR-HDRID sy-vline 
WA_DFKKJPCVSFILE_STR-BLCNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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