ABAP Select data from SAP table IREQNPAYTSTGY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IREQNPAYTSTGY
*  INTO TABLE @DATA(IT_IREQNPAYTSTGY2).
*--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_IREQNPAYTSTGY INDEX 1 INTO DATA(WA_IREQNPAYTSTGY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IREQNPAYTSTGY>-MANDT = 1.
<IREQNPAYTSTGY>-PAYMENTREQUISITIONSTRATEGYUUID = 1.
<IREQNPAYTSTGY>-PAYMENTREQUISITIONUUID = 1.
<IREQNPAYTSTGY>-PAYTREQUISITIONSTRATEGYNUMBER = 1.
<IREQNPAYTSTGY>-PAYMENTREQNSTRATEGYSTATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IREQNPAYTSTGY-PAYTREQNSTRATEGYAMTINTRANSCRCY, sy-vline,
  WA_IREQNPAYTSTGY-CURRENCY, sy-vline,
  WA_IREQNPAYTSTGY-PAYMENTMETHOD, sy-vline,
  WA_IREQNPAYTSTGY-PAYMENTDATE, sy-vline,
  WA_IREQNPAYTSTGY-HOUSEBANK, sy-vline,
  WA_IREQNPAYTSTGY-HOUSEBANKACCOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IREQNPAYTSTGY 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_IREQNPAYTSTGY 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_IREQNPAYTSTGY INTO WA_IREQNPAYTSTGY.


*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_IREQNPAYTSTGY_STR, 
MANDT TYPE STRING,
PAYMENTREQUISITIONSTRATEGYUUID TYPE STRING,
PAYMENTREQUISITIONUUID TYPE STRING,
PAYTREQUISITIONSTRATEGYNUMBER TYPE STRING,
PAYMENTREQNSTRATEGYSTATUS TYPE STRING,
PAYTREQNSTRATEGYAMTINTRANSCRCY TYPE STRING,
CURRENCY TYPE STRING,
PAYMENTMETHOD TYPE STRING,
PAYMENTDATE TYPE STRING,
HOUSEBANK TYPE STRING,
HOUSEBANKACCOUNT TYPE STRING,
BANKCOUNTRY TYPE STRING,
BANK TYPE STRING,
BANKACCOUNT TYPE STRING,
BPBANKACCOUNTINTERNALID TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
CHANGEDONDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IREQNPAYTSTGY_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_IREQNPAYTSTGY_STR-MANDT sy-vline 
WA_IREQNPAYTSTGY_STR-PAYMENTREQUISITIONSTRATEGYUUID sy-vline 
WA_IREQNPAYTSTGY_STR-PAYMENTREQUISITIONUUID sy-vline 
WA_IREQNPAYTSTGY_STR-PAYTREQUISITIONSTRATEGYNUMBER sy-vline 
WA_IREQNPAYTSTGY_STR-PAYMENTREQNSTRATEGYSTATUS sy-vline 
WA_IREQNPAYTSTGY_STR-PAYTREQNSTRATEGYAMTINTRANSCRCY sy-vline 
WA_IREQNPAYTSTGY_STR-CURRENCY sy-vline 
WA_IREQNPAYTSTGY_STR-PAYMENTMETHOD sy-vline 
WA_IREQNPAYTSTGY_STR-PAYMENTDATE sy-vline 
WA_IREQNPAYTSTGY_STR-HOUSEBANK sy-vline 
WA_IREQNPAYTSTGY_STR-HOUSEBANKACCOUNT sy-vline 
WA_IREQNPAYTSTGY_STR-BANKCOUNTRY sy-vline 
WA_IREQNPAYTSTGY_STR-BANK sy-vline 
WA_IREQNPAYTSTGY_STR-BANKACCOUNT sy-vline 
WA_IREQNPAYTSTGY_STR-BPBANKACCOUNTINTERNALID sy-vline 
WA_IREQNPAYTSTGY_STR-CREATEDBYUSER sy-vline 
WA_IREQNPAYTSTGY_STR-CREATIONDATETIME sy-vline 
WA_IREQNPAYTSTGY_STR-LASTCHANGEDBYUSER sy-vline 
WA_IREQNPAYTSTGY_STR-CHANGEDONDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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