ABAP Select data from SAP table IPPMTHIS into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IPPMTHIS 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 IPPMTHIS. 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 IPPMTHIS 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_IPPMTHIS TYPE STANDARD TABLE OF IPPMTHIS,
      WA_IPPMTHIS TYPE IPPMTHIS,
      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: <IPPMTHIS> TYPE IPPMTHIS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPPMTHIS
*  INTO TABLE @DATA(IT_IPPMTHIS2).
*--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_IPPMTHIS INDEX 1 INTO DATA(WA_IPPMTHIS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPPMTHIS>-MANDT = 1.
<IPPMTHIS>-PREPAYMENTASSIGNEDDOCUMENTUUID = 1.
<IPPMTHIS>-PREPAYMENTCONSUMPTIONDOCUUID = 1.
<IPPMTHIS>-SAPBUSINESSOBJECTTYPECODE = 1.
<IPPMTHIS>-DOCNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPPMTHIS-DOCUMENTITEMNUMBER, sy-vline,
  WA_IPPMTHIS-PREPAYMENTAGREEMENT, sy-vline,
  WA_IPPMTHIS-PREPAYMENTAGRMTLINKTYPE, sy-vline,
  WA_IPPMTHIS-PREPAYMENTSTOPINTRSTDATETYPE, sy-vline,
  WA_IPPMTHIS-REFERENCEAPPLICATIONDOCUMENT, sy-vline,
  WA_IPPMTHIS-REFERENCESETTLEMENTUUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPPMTHIS 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_IPPMTHIS 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_IPPMTHIS INTO WA_IPPMTHIS.


*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_IPPMTHIS_STR, 
MANDT TYPE STRING,
PREPAYMENTASSIGNEDDOCUMENTUUID TYPE STRING,
PREPAYMENTCONSUMPTIONDOCUUID TYPE STRING,
SAPBUSINESSOBJECTTYPECODE TYPE STRING,
DOCNUMBER TYPE STRING,
DOCUMENTITEMNUMBER TYPE STRING,
PREPAYMENTAGREEMENT TYPE STRING,
PREPAYMENTAGRMTLINKTYPE TYPE STRING,
PREPAYMENTSTOPINTRSTDATETYPE TYPE STRING,
REFERENCEAPPLICATIONDOCUMENT TYPE STRING,
REFERENCESETTLEMENTUUID TYPE STRING,
PREPAYMENTAGREEMENTISACTIVE TYPE STRING,
PREPAYMENTAGRMTREFLINK TYPE STRING,
PREPAYMENTAGRMTREFLINKUUID TYPE STRING,
PREPAYMENTAGRMTREFBUSOBJECT TYPE STRING,
PREPAYMENTAGRMTREFDOCUMENTTYPE TYPE STRING,
SDDOCUMENTCATEGORY TYPE STRING,
PREPAYMENTAGRMTREFDOCITEM TYPE STRING,
PREPAYMENTAGRMTREFDOCUMENT TYPE STRING,
PREPAYMENTAGRMTREFDOCYEAR TYPE STRING,
PREPAYMENTAGRMTLINKAMOUNT TYPE STRING,
PREPAYMENTAGREEMENTCURRENCY TYPE STRING,
PREPAYAGRMTACCRINTERESTAMOUNT TYPE STRING,
PREPAYAGRMTACCRINTERESTCRCY TYPE STRING,
PREPAYAGRMTVALIDFROMDATETIME TYPE STRING,
PREPAYAGRMTVALIDTODATETIME TYPE STRING,
PREPAYMENTAGRMTUNLINKREASON TYPE STRING,
PREPAYMENTAGREEMENTSTATUS TYPE STRING,
PREPAYMENTAGRMTLINKSTATUS TYPE STRING,
PREPAYMENTAGRMTPOSTINGSTATUS TYPE STRING,
PREPAYMENTAGREEMENTTYPE TYPE STRING,
PREPAYMENTAGREEMENTCATEGORY TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPPMTHIS_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_IPPMTHIS_STR-MANDT sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTASSIGNEDDOCUMENTUUID sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTCONSUMPTIONDOCUUID sy-vline 
WA_IPPMTHIS_STR-SAPBUSINESSOBJECTTYPECODE sy-vline 
WA_IPPMTHIS_STR-DOCNUMBER sy-vline 
WA_IPPMTHIS_STR-DOCUMENTITEMNUMBER sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGREEMENT sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGRMTLINKTYPE sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTSTOPINTRSTDATETYPE sy-vline 
WA_IPPMTHIS_STR-REFERENCEAPPLICATIONDOCUMENT sy-vline 
WA_IPPMTHIS_STR-REFERENCESETTLEMENTUUID sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGREEMENTISACTIVE sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGRMTREFLINK sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGRMTREFLINKUUID sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGRMTREFBUSOBJECT sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGRMTREFDOCUMENTTYPE sy-vline 
WA_IPPMTHIS_STR-SDDOCUMENTCATEGORY sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGRMTREFDOCITEM sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGRMTREFDOCUMENT sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGRMTREFDOCYEAR sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGRMTLINKAMOUNT sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGREEMENTCURRENCY sy-vline 
WA_IPPMTHIS_STR-PREPAYAGRMTACCRINTERESTAMOUNT sy-vline 
WA_IPPMTHIS_STR-PREPAYAGRMTACCRINTERESTCRCY sy-vline 
WA_IPPMTHIS_STR-PREPAYAGRMTVALIDFROMDATETIME sy-vline 
WA_IPPMTHIS_STR-PREPAYAGRMTVALIDTODATETIME sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGRMTUNLINKREASON sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGREEMENTSTATUS sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGRMTLINKSTATUS sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGRMTPOSTINGSTATUS sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGREEMENTTYPE sy-vline 
WA_IPPMTHIS_STR-PREPAYMENTAGREEMENTCATEGORY sy-vline 
WA_IPPMTHIS_STR-CREATEDBYUSER sy-vline 
WA_IPPMTHIS_STR-CREATIONDATETIME sy-vline 
WA_IPPMTHIS_STR-LASTCHANGEDBYUSER sy-vline 
WA_IPPMTHIS_STR-LASTCHANGEDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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