ABAP Select data from SAP table IPAYTREQN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPAYTREQN
*  INTO TABLE @DATA(IT_IPAYTREQN2).
*--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_IPAYTREQN INDEX 1 INTO DATA(WA_IPAYTREQN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPAYTREQN>-MANDT = 1.
<IPAYTREQN>-PAYMENTREQUISITIONUUID = 1.
<IPAYTREQN>-PAYMENTREQUISITIONNUMBER = 1.
<IPAYTREQN>-COMPANYCODE = 1.
<IPAYTREQN>-PAYMENTREQUISITIONSTATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPAYTREQN-SUPPLIER, sy-vline,
  WA_IPAYTREQN-PAYMENTREQUISITIONPRIORITY, sy-vline,
  WA_IPAYTREQN-PAYTREQUISITIONAMTINTRANSCRCY, sy-vline,
  WA_IPAYTREQN-CURRENCY, sy-vline,
  WA_IPAYTREQN-PAYMENTREQUISITIONTYPE, sy-vline,
  WA_IPAYTREQN-PAYMENTMETHOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPAYTREQN 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_IPAYTREQN 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_IPAYTREQN INTO WA_IPAYTREQN.


*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 SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPAYTREQN-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPAYTREQN-SUPPLIER.
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_IPAYTREQN_STR, 
MANDT TYPE STRING,
PAYMENTREQUISITIONUUID TYPE STRING,
PAYMENTREQUISITIONNUMBER TYPE STRING,
COMPANYCODE TYPE STRING,
PAYMENTREQUISITIONSTATUS TYPE STRING,
SUPPLIER TYPE STRING,
PAYMENTREQUISITIONPRIORITY TYPE STRING,
PAYTREQUISITIONAMTINTRANSCRCY TYPE STRING,
CURRENCY TYPE STRING,
PAYMENTREQUISITIONTYPE TYPE STRING,
PAYMENTMETHOD TYPE STRING,
NOTETEXT TYPE STRING,
WORKFLOWAPPROVERNOTE TYPE STRING,
PLANNEDPAYMENTDATE TYPE STRING,
PAYMENTDIFFERENCEREASON TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
CHANGEDONDATETIME TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPAYTREQN_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_IPAYTREQN_STR-MANDT sy-vline 
WA_IPAYTREQN_STR-PAYMENTREQUISITIONUUID sy-vline 
WA_IPAYTREQN_STR-PAYMENTREQUISITIONNUMBER sy-vline 
WA_IPAYTREQN_STR-COMPANYCODE sy-vline 
WA_IPAYTREQN_STR-PAYMENTREQUISITIONSTATUS sy-vline 
WA_IPAYTREQN_STR-SUPPLIER sy-vline 
WA_IPAYTREQN_STR-PAYMENTREQUISITIONPRIORITY sy-vline 
WA_IPAYTREQN_STR-PAYTREQUISITIONAMTINTRANSCRCY sy-vline 
WA_IPAYTREQN_STR-CURRENCY sy-vline 
WA_IPAYTREQN_STR-PAYMENTREQUISITIONTYPE sy-vline 
WA_IPAYTREQN_STR-PAYMENTMETHOD sy-vline 
WA_IPAYTREQN_STR-NOTETEXT sy-vline 
WA_IPAYTREQN_STR-WORKFLOWAPPROVERNOTE sy-vline 
WA_IPAYTREQN_STR-PLANNEDPAYMENTDATE sy-vline 
WA_IPAYTREQN_STR-PAYMENTDIFFERENCEREASON sy-vline 
WA_IPAYTREQN_STR-CREATEDBYUSER sy-vline 
WA_IPAYTREQN_STR-CREATIONDATETIME sy-vline 
WA_IPAYTREQN_STR-LASTCHANGEDBYUSER sy-vline 
WA_IPAYTREQN_STR-CHANGEDONDATETIME sy-vline 
WA_IPAYTREQN_STR-AUTHORIZATIONGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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