ABAP Select data from SAP table ISPREPAYMENTASSIGNEDDOCUMENTT1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISPREPAYMENTASSIGNEDDOCUMENTT1 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 ISPREPAYMENTASSIGNEDDOCUMENTT1. 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 ISPREPAYMENTASSIGNEDDOCUMENTT1 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_ISPREPAYMENTASSIGNEDDOCUMENTT1 TYPE STANDARD TABLE OF ISPREPAYMENTASSIGNEDDOCUMENTT1,
      WA_ISPREPAYMENTASSIGNEDDOCUMENTT1 TYPE ISPREPAYMENTASSIGNEDDOCUMENTT1,
      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: <ISPREPAYMENTASSIGNEDDOCUMENTT1> TYPE ISPREPAYMENTASSIGNEDDOCUMENTT1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISPREPAYMENTASSIGNEDDOCUMENTT1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISPREPAYMENTASSIGNEDDOCUMENTT1
  INTO TABLE IT_ISPREPAYMENTASSIGNEDDOCUMENTT1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISPREPAYMENTASSIGNEDDOCUMENTT1
*  INTO TABLE @DATA(IT_ISPREPAYMENTASSIGNEDDOCUMENTT12).
*--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_ISPREPAYMENTASSIGNEDDOCUMENTT1 INDEX 1 INTO DATA(WA_ISPREPAYMENTASSIGNEDDOCUMENTT12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISPREPAYMENTASSIGNEDDOCUMENTT1 ASSIGNING <ISPREPAYMENTASSIGNEDDOCUMENTT1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISPREPAYMENTASSIGNEDDOCUMENTT1>-KEY = 1.
<ISPREPAYMENTASSIGNEDDOCUMENTT1>-PARENT_KEY = 1.
<ISPREPAYMENTASSIGNEDDOCUMENTT1>-ROOT_KEY = 1.
<ISPREPAYMENTASSIGNEDDOCUMENTT1>-PREPAYMENTCONSUMPTIONDOCUUID = 1.
<ISPREPAYMENTASSIGNEDDOCUMENTT1>-SAPBUSINESSOBJECTTYPECODE = 1.

ENDLOOP.

LOOP AT IT_ISPREPAYMENTASSIGNEDDOCUMENTT1 INTO WA_ISPREPAYMENTASSIGNEDDOCUMENTT1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISPREPAYMENTASSIGNEDDOCUMENTT1-DOCNUMBER, sy-vline,
  WA_ISPREPAYMENTASSIGNEDDOCUMENTT1-DOCUMENTITEMNUMBER, sy-vline,
  WA_ISPREPAYMENTASSIGNEDDOCUMENTT1-PREPAYMENTAGREEMENT, sy-vline,
  WA_ISPREPAYMENTASSIGNEDDOCUMENTT1-PREPAYMENTAGRMTLINKTYPE, sy-vline,
  WA_ISPREPAYMENTASSIGNEDDOCUMENTT1-PREPAYMENTSTOPINTRSTDATETYPE, sy-vline,
  WA_ISPREPAYMENTASSIGNEDDOCUMENTT1-PREPAYMENTAGREEMENTISACTIVE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISPREPAYMENTASSIGNEDDOCUMENTT1 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_ISPREPAYMENTASSIGNEDDOCUMENTT1 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_ISPREPAYMENTASSIGNEDDOCUMENTT1 INTO WA_ISPREPAYMENTASSIGNEDDOCUMENTT1.


*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 DOCNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISPREPAYMENTASSIGNEDDOCUMENTT1-DOCNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISPREPAYMENTASSIGNEDDOCUMENTT1-DOCNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PREPAYMENTAGRMTREFDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISPREPAYMENTASSIGNEDDOCUMENTT1-PREPAYMENTAGRMTREFDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISPREPAYMENTASSIGNEDDOCUMENTT1-PREPAYMENTAGRMTREFDOCUMENT.
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_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
PREPAYMENTCONSUMPTIONDOCUUID TYPE STRING,
SAPBUSINESSOBJECTTYPECODE TYPE STRING,
DOCNUMBER TYPE STRING,
DOCUMENTITEMNUMBER TYPE STRING,
PREPAYMENTAGREEMENT TYPE STRING,
PREPAYMENTAGRMTLINKTYPE TYPE STRING,
PREPAYMENTSTOPINTRSTDATETYPE TYPE STRING,
PREPAYMENTAGREEMENTISACTIVE TYPE STRING,
PREPAYMENTAGRMTREFLINK TYPE STRING,
PREPAYMENTAGRMTREFLINKUUID TYPE STRING,
PREPAYMENTAGRMTREFBUSOBJECT TYPE STRING,
PREPAYMENTAGRMTREFDOCUMENTTYPE TYPE STRING,
PREPAYMENTAGRMTREFSDDOCCATGRY TYPE STRING,
PREPAYMENTAGRMTREFDOCUMENT TYPE STRING,
PREPAYMENTAGRMTREFDOCITEM TYPE STRING,
PREPAYMENTAGRMTREFDOCYEAR TYPE STRING,
PREPAYMENTAGRMTREFDOCAMOUNT TYPE STRING,
PREPAYMENTAGRMTREFDOCCURRENCY TYPE STRING,
PREPAYMENTAGRMTLINKAMOUNT TYPE STRING,
PREPAYMENTAGREEMENTCURRENCY TYPE STRING,
PREPAYMENTAGRMTACTUALEVENTAMT TYPE STRING,
PREPAYMENTAGRMTACTUALEVENTCRCY TYPE STRING,
REFERENCEAPPLICATIONDOCUMENT TYPE STRING,
REFERENCESETTLEMENTUUID TYPE STRING,
PREPAYAGRMTACCRINTERESTAMOUNT TYPE STRING,
PREPAYAGRMTACCRINTERESTCRCY TYPE STRING,
PREPAYAGRMTVALIDFROMDATETIME TYPE STRING,
PREPAYAGRMTVALIDTODATETIME TYPE STRING,
PREPAYAGRMTDELINKREASONCODE TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
PPMGAG_DBD_DUMMY TYPE STRING,
SDDOCUMENTCATEGORY TYPE STRING,
PREPAYMENTAGRMTUNLINKREASON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_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_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-KEY sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PARENT_KEY sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-ROOT_KEY sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTCONSUMPTIONDOCUUID sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-SAPBUSINESSOBJECTTYPECODE sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-DOCNUMBER sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-DOCUMENTITEMNUMBER sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGREEMENT sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTLINKTYPE sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTSTOPINTRSTDATETYPE sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGREEMENTISACTIVE sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTREFLINK sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTREFLINKUUID sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTREFBUSOBJECT sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTREFDOCUMENTTYPE sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTREFSDDOCCATGRY sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTREFDOCUMENT sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTREFDOCITEM sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTREFDOCYEAR sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTREFDOCAMOUNT sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTREFDOCCURRENCY sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTLINKAMOUNT sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGREEMENTCURRENCY sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTACTUALEVENTAMT sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTACTUALEVENTCRCY sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-REFERENCEAPPLICATIONDOCUMENT sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-REFERENCESETTLEMENTUUID sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYAGRMTACCRINTERESTAMOUNT sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYAGRMTACCRINTERESTCRCY sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYAGRMTVALIDFROMDATETIME sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYAGRMTVALIDTODATETIME sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYAGRMTDELINKREASONCODE sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-CREATEDBYUSER sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-CREATIONDATETIME sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-LASTCHANGEDBYUSER sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-LASTCHANGEDATETIME sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PPMGAG_DBD_DUMMY sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-SDDOCUMENTCATEGORY sy-vline 
WA_ISPREPAYMENTASSIGNEDDOCUMENTT1_STR-PREPAYMENTAGRMTUNLINKREASON sy-vline      INTO ld_text SEPARATED BY SPACE.

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