ABAP Select data from SAP table COMT_PAYCARD_AUTH_REQUEST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COMT_PAYCARD_AUTH_REQUEST
*  INTO TABLE @DATA(IT_COMT_PAYCARD_AUTH_REQUEST2).
*--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_COMT_PAYCARD_AUTH_REQUEST INDEX 1 INTO DATA(WA_COMT_PAYCARD_AUTH_REQUEST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COMT_PAYCARD_AUTH_REQUEST>-CLIENT = 1.
<COMT_PAYCARD_AUTH_REQUEST>-GUID = 1.
<COMT_PAYCARD_AUTH_REQUEST>-DOC_NO = 1.
<COMT_PAYCARD_AUTH_REQUEST>-DOC_GUID = 1.
<COMT_PAYCARD_AUTH_REQUEST>-CARD_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COMT_PAYCARD_AUTH_REQUEST-CARD_NO, sy-vline,
  WA_COMT_PAYCARD_AUTH_REQUEST-CARD_EXP_DATE, sy-vline,
  WA_COMT_PAYCARD_AUTH_REQUEST-CARD_HOLDER, sy-vline,
  WA_COMT_PAYCARD_AUTH_REQUEST-AUTH_REQ_AMOUNT, sy-vline,
  WA_COMT_PAYCARD_AUTH_REQUEST-CURRENCY, sy-vline,
  WA_COMT_PAYCARD_AUTH_REQUEST-AUTH_PRE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COMT_PAYCARD_AUTH_REQUEST 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_COMT_PAYCARD_AUTH_REQUEST 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_COMT_PAYCARD_AUTH_REQUEST INTO WA_COMT_PAYCARD_AUTH_REQUEST.


*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 DOC_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COMT_PAYCARD_AUTH_REQUEST-DOC_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMT_PAYCARD_AUTH_REQUEST-DOC_NO.
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_COMT_PAYCARD_AUTH_REQUEST_STR, 
CLIENT TYPE STRING,
GUID TYPE STRING,
DOC_NO TYPE STRING,
DOC_GUID TYPE STRING,
CARD_TYPE TYPE STRING,
CARD_NO TYPE STRING,
CARD_EXP_DATE TYPE STRING,
CARD_HOLDER TYPE STRING,
AUTH_REQ_AMOUNT TYPE STRING,
CURRENCY TYPE STRING,
AUTH_PRE TYPE STRING,
CARD_MERCH_ID TYPE STRING,
EXTEND_DATA TYPE STRING,
NAME_FIRST TYPE STRING,
NAME_LAST TYPE STRING,
CITY TYPE STRING,
DISTRICT TYPE STRING,
STREET TYPE STRING,
ZIPCODE TYPE STRING,
STATE TYPE STRING,
COUNTRY TYPE STRING,
PRE_AUTH_AMOUNT TYPE STRING,
PRE_AUTH_NO TYPE STRING,
PRE_AUTH_REF TYPE STRING,
PRE_AUTH_DATE TYPE STRING,
PRE_AUTH_TIME TYPE STRING,
CARD_CVV TYPE STRING,
CARD_CVV_STATUS TYPE STRING,
CARD_CVV_CONTROL TYPE STRING,
CARD_BEG_DATE TYPE STRING,
CARD_TOKEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COMT_PAYCARD_AUTH_REQUEST_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_COMT_PAYCARD_AUTH_REQUEST_STR-CLIENT sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-GUID sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-DOC_NO sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-DOC_GUID sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-CARD_TYPE sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-CARD_NO sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-CARD_EXP_DATE sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-CARD_HOLDER sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-AUTH_REQ_AMOUNT sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-CURRENCY sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-AUTH_PRE sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-CARD_MERCH_ID sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-EXTEND_DATA sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-NAME_FIRST sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-NAME_LAST sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-CITY sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-DISTRICT sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-STREET sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-ZIPCODE sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-STATE sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-COUNTRY sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-PRE_AUTH_AMOUNT sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-PRE_AUTH_NO sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-PRE_AUTH_REF sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-PRE_AUTH_DATE sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-PRE_AUTH_TIME sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-CARD_CVV sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-CARD_CVV_STATUS sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-CARD_CVV_CONTROL sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-CARD_BEG_DATE sy-vline 
WA_COMT_PAYCARD_AUTH_REQUEST_STR-CARD_TOKEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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