ABAP Select data from SAP table IPPMTNOM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPPMTNOM
*  INTO TABLE @DATA(IT_IPPMTNOM2).
*--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_IPPMTNOM INDEX 1 INTO DATA(WA_IPPMTNOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPPMTNOM>-MANDT = 1.
<IPPMTNOM>-PREPAYMENTASSIGNEDDOCUMENTUUID = 1.
<IPPMTNOM>-PREPAYMENTAGREEMENTUUID = 1.
<IPPMTNOM>-PREPAYMENTAGREEMENT = 1.
<IPPMTNOM>-COUNTERPARTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPPMTNOM-COMPANYCODE, sy-vline,
  WA_IPPMTNOM-PREPAYMENTAGREEMENTSTATUS, sy-vline,
  WA_IPPMTNOM-PREPAYMENTAGRMTLINKSTATUS, sy-vline,
  WA_IPPMTNOM-PREPAYMENTAGRMTPOSTINGSTATUS, sy-vline,
  WA_IPPMTNOM-PREPAYMENTBARTERLINKSTATUS, sy-vline,
  WA_IPPMTNOM-PREPAYMENTAGREEMENTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPPMTNOM 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_IPPMTNOM 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_IPPMTNOM INTO WA_IPPMTNOM.


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

*Conversion exit ALPHA, internal->external for field PREPAYMENTAGRMTREFDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPPMTNOM-PREPAYMENTAGRMTREFDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPPMTNOM-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_IPPMTNOM_STR, 
MANDT TYPE STRING,
PREPAYMENTASSIGNEDDOCUMENTUUID TYPE STRING,
PREPAYMENTAGREEMENTUUID TYPE STRING,
PREPAYMENTAGREEMENT TYPE STRING,
COUNTERPARTY TYPE STRING,
COMPANYCODE TYPE STRING,
PREPAYMENTAGREEMENTSTATUS TYPE STRING,
PREPAYMENTAGRMTLINKSTATUS TYPE STRING,
PREPAYMENTAGRMTPOSTINGSTATUS TYPE STRING,
PREPAYMENTBARTERLINKSTATUS TYPE STRING,
PREPAYMENTAGREEMENTTYPE TYPE STRING,
PROCESSINGSTATUSDESC TYPE STRING,
LOANPAYMENTSTATUSTEXT TYPE STRING,
ASSIGNMENTSTATUSTEXT TYPE STRING,
PREPAYMENTAGREEMENTCATEGORY TYPE STRING,
CONDITIONAPPLICATION TYPE STRING,
PREPAYMENTAGREEMENTAMOUNT TYPE STRING,
PREPAYMENTAGRMTLINKAMOUNT TYPE STRING,
PREPAYMENTAGREEMENTCURRENCY TYPE STRING,
PREPAYMENTAGREEMENTCOMMODITY TYPE STRING,
PREPAYMENTAGRMTISPOSTED TYPE STRING,
FINALSETTLEMENTINDICATOR TYPE STRING,
PREPAYMENTAGRMTREFDOCUMENT TYPE STRING,
PREPAYMENTAGRMTREFDOCITEM TYPE STRING,
PREPAYMENTAGRMTREFDOCYEAR TYPE STRING,
RECORDCREATIONDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPPMTNOM_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_IPPMTNOM_STR-MANDT sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTASSIGNEDDOCUMENTUUID sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGREEMENTUUID sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGREEMENT sy-vline 
WA_IPPMTNOM_STR-COUNTERPARTY sy-vline 
WA_IPPMTNOM_STR-COMPANYCODE sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGREEMENTSTATUS sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGRMTLINKSTATUS sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGRMTPOSTINGSTATUS sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTBARTERLINKSTATUS sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGREEMENTTYPE sy-vline 
WA_IPPMTNOM_STR-PROCESSINGSTATUSDESC sy-vline 
WA_IPPMTNOM_STR-LOANPAYMENTSTATUSTEXT sy-vline 
WA_IPPMTNOM_STR-ASSIGNMENTSTATUSTEXT sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGREEMENTCATEGORY sy-vline 
WA_IPPMTNOM_STR-CONDITIONAPPLICATION sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGREEMENTAMOUNT sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGRMTLINKAMOUNT sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGREEMENTCURRENCY sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGREEMENTCOMMODITY sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGRMTISPOSTED sy-vline 
WA_IPPMTNOM_STR-FINALSETTLEMENTINDICATOR sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGRMTREFDOCUMENT sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGRMTREFDOCITEM sy-vline 
WA_IPPMTNOM_STR-PREPAYMENTAGRMTREFDOCYEAR sy-vline 
WA_IPPMTNOM_STR-RECORDCREATIONDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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