ABAP Select data from SAP table FKK_CASHREG_PRINT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_CASHREG_PRINT
*  INTO TABLE @DATA(IT_FKK_CASHREG_PRINT2).
*--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_FKK_CASHREG_PRINT INDEX 1 INTO DATA(WA_FKK_CASHREG_PRINT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_CASHREG_PRINT>-RECEIPT_ID = 1.
<FKK_CASHREG_PRINT>-CASHBOX_ID = 1.
<FKK_CASHREG_PRINT>-SIG_INACTIVE = 1.
<FKK_CASHREG_PRINT>-JWS_PAYLOAD = 1.
<FKK_CASHREG_PRINT>-MANDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_CASHREG_PRINT-BUKRS, sy-vline,
  WA_FKK_CASHREG_PRINT-OFFIC, sy-vline,
  WA_FKK_CASHREG_PRINT-CHDSK, sy-vline,
  WA_FKK_CASHREG_PRINT-CRBEL, sy-vline,
  WA_FKK_CASHREG_PRINT-RCPNR, sy-vline,
  WA_FKK_CASHREG_PRINT-CRDTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_CASHREG_PRINT 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_FKK_CASHREG_PRINT 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_FKK_CASHREG_PRINT INTO WA_FKK_CASHREG_PRINT.


*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 RECEIPT_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_CASHREG_PRINT-RECEIPT_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_CASHREG_PRINT-RECEIPT_ID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field RCPNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_CASHREG_PRINT-RCPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_CASHREG_PRINT-RCPNR.
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_FKK_CASHREG_PRINT_STR, 
RECEIPT_ID TYPE STRING,
CASHBOX_ID TYPE STRING,
SIG_INACTIVE TYPE STRING,
JWS_PAYLOAD TYPE STRING,
MANDT TYPE STRING,
BUKRS TYPE STRING,
OFFIC TYPE STRING,
CHDSK TYPE STRING,
CRBEL TYPE STRING,
RCPNR TYPE STRING,
CRDTY TYPE STRING,
PAYTP TYPE STRING,
PRCTP TYPE STRING,
ERNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
WAERS TYPE STRING,
BETRZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_CASHREG_PRINT_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_FKK_CASHREG_PRINT_STR-RECEIPT_ID sy-vline 
WA_FKK_CASHREG_PRINT_STR-CASHBOX_ID sy-vline 
WA_FKK_CASHREG_PRINT_STR-SIG_INACTIVE sy-vline 
WA_FKK_CASHREG_PRINT_STR-JWS_PAYLOAD sy-vline 
WA_FKK_CASHREG_PRINT_STR-MANDT sy-vline 
WA_FKK_CASHREG_PRINT_STR-BUKRS sy-vline 
WA_FKK_CASHREG_PRINT_STR-OFFIC sy-vline 
WA_FKK_CASHREG_PRINT_STR-CHDSK sy-vline 
WA_FKK_CASHREG_PRINT_STR-CRBEL sy-vline 
WA_FKK_CASHREG_PRINT_STR-RCPNR sy-vline 
WA_FKK_CASHREG_PRINT_STR-CRDTY sy-vline 
WA_FKK_CASHREG_PRINT_STR-PAYTP sy-vline 
WA_FKK_CASHREG_PRINT_STR-PRCTP sy-vline 
WA_FKK_CASHREG_PRINT_STR-ERNAM sy-vline 
WA_FKK_CASHREG_PRINT_STR-CPUDT sy-vline 
WA_FKK_CASHREG_PRINT_STR-CPUTM sy-vline 
WA_FKK_CASHREG_PRINT_STR-WAERS sy-vline 
WA_FKK_CASHREG_PRINT_STR-BETRZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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