ABAP Select data from SAP table PAYREQN_REQND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PAYREQN_REQND
*  INTO TABLE @DATA(IT_PAYREQN_REQND2).
*--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_PAYREQN_REQND INDEX 1 INTO DATA(WA_PAYREQN_REQND2).


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

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

ENDLOOP.

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

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


*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_PAYREQN_REQND-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PAYREQN_REQND-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_PAYREQN_REQND_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,
PAYTREQNAMTINTRANSCRCYFOREDIT TYPE STRING,
CURRENCY TYPE STRING,
PAYMENTREQUISITIONTYPE TYPE STRING,
PAYMENTMETHOD TYPE STRING,
PLANNEDPAYMENTDATE TYPE STRING,
PAYMENTDIFFERENCEREASON TYPE STRING,
NOTETEXT TYPE STRING,
WORKFLOWAPPROVERNOTE TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
CHANGEDONDATETIME TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTFIELDCHANGES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PAYREQN_REQND_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_PAYREQN_REQND_STR-MANDT sy-vline 
WA_PAYREQN_REQND_STR-PAYMENTREQUISITIONUUID sy-vline 
WA_PAYREQN_REQND_STR-PAYMENTREQUISITIONNUMBER sy-vline 
WA_PAYREQN_REQND_STR-COMPANYCODE sy-vline 
WA_PAYREQN_REQND_STR-PAYMENTREQUISITIONSTATUS sy-vline 
WA_PAYREQN_REQND_STR-SUPPLIER sy-vline 
WA_PAYREQN_REQND_STR-PAYMENTREQUISITIONPRIORITY sy-vline 
WA_PAYREQN_REQND_STR-PAYTREQUISITIONAMTINTRANSCRCY sy-vline 
WA_PAYREQN_REQND_STR-PAYTREQNAMTINTRANSCRCYFOREDIT sy-vline 
WA_PAYREQN_REQND_STR-CURRENCY sy-vline 
WA_PAYREQN_REQND_STR-PAYMENTREQUISITIONTYPE sy-vline 
WA_PAYREQN_REQND_STR-PAYMENTMETHOD sy-vline 
WA_PAYREQN_REQND_STR-PLANNEDPAYMENTDATE sy-vline 
WA_PAYREQN_REQND_STR-PAYMENTDIFFERENCEREASON sy-vline 
WA_PAYREQN_REQND_STR-NOTETEXT sy-vline 
WA_PAYREQN_REQND_STR-WORKFLOWAPPROVERNOTE sy-vline 
WA_PAYREQN_REQND_STR-AUTHORIZATIONGROUP sy-vline 
WA_PAYREQN_REQND_STR-CREATEDBYUSER sy-vline 
WA_PAYREQN_REQND_STR-CREATIONDATETIME sy-vline 
WA_PAYREQN_REQND_STR-LASTCHANGEDBYUSER sy-vline 
WA_PAYREQN_REQND_STR-CHANGEDONDATETIME sy-vline 
WA_PAYREQN_REQND_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_PAYREQN_REQND_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_PAYREQN_REQND_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_PAYREQN_REQND_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_PAYREQN_REQND_STR-HASACTIVEENTITY sy-vline 
WA_PAYREQN_REQND_STR-DRAFTFIELDCHANGES sy-vline      INTO ld_text SEPARATED BY SPACE.

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